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comfyui-loop-mcp

それはComfyUIをただ駆動するだけではありません。ループを実行するものです: submit → get_result → get_image (LOOK) → compare_images → loop_record。ラチェット(best-so-far + ledger)はディスク上に保持されます

あなた自身の ComfyUI のためのループ対応 MCP サーバーです。 API を呼び出すだけではありません。ループを実行します: build → run → look → critique → fix、出力が実際にブリーフを満たすまで。

node_errors がゼロで実行されるグラフは、正しいのではなく、有効です。ゆがんだ手、ずれた背景、硬いマットエッジ、目に見えるタイルの継ぎ目 — そのどれもエラーログには現れません。ピクセルにのみ現れます。だからこそ、すべてのツール説明、すべてのツール応答、そしてサーバー自身の指示は、モデルがグラフを完成と宣言する前に look するよう促します。

他の誰も持っていない部分: ラチェットはツールであって、提案ではありません。 ほとんどのエージェントツールは ComfyUI を駆動します。これはループを管理します — 長いループではコンテキストが圧縮され、その瞬間に記憶されていた "best-so-far" は消えてしまいます: ラチェットは静かにラチェットを止め、モデルはすでに拒否した変更を再試行し、最終回答としてリグレッションを渡してしまうことがあります。だから、最良のグラフと台帳は、モデルのメモリではなく、ディスク上にあります。元に戻すことは、思い出しの行為ではなく、ツール呼び出しです。

loop_start ─▶ submit ─▶ get_result ─▶ get_image ─▶ compare_images ─▶ loop_record ─┐
     ▲                                   (LOOK)      (what moved?)    (ratchet)   │
     └───────────────────  revert to best, try something else  ◀─────────────────┘
                                                          ↓ can't name a defect?
                                           loop_finish + loop_report → sign-off

この手法はサーバーに同梱されています。ループプロンプトと Claude Code スキルは comfy_loop/docs/ にあり、wheel にパッケージされているので、comfy_loop / comfy_skill / comfy_install はサーバーがインストールされている場所からそれらをそのまま提供します — 単一ソース、同期を保つものはありません。(これらはもともと comfyui-llm-onboarding-prompt で始まりましたが、そのリポジトリはもはやメンテナンスされておらず、現在はこのリポジトリで保管されています。)


Comfy 自身の MCP サーバーとの比較

ComfyUI は公式サーバーを 2つ 提供しています。これは、それらと並んで構築された3つ目の存在です — 独立して、そして問題の反対側から。

Comfy-Org/comfy-mcp (最初のコミットは 2026-07-01 で、このリポジトリの翌日ですが、公開はそちらが先でした) は、ローカルの ComfyUI を comfy-cli 経由で駆動します: すべてのツールは comfy バイナリを外部プロセスとして実行し、その JSON エンベロープを解析します。Comfy Cloud MCP (https://cloud.comfy.org/mcp) は、Comfy の GPU 上でグラフを実行するリモート HTTP サーバーです。どちらも ComfyUI チームによって構築・保守されています。

これは /prompt と /object_info に直接 HTTP で通信します — CLI もアカウントも不要、httpx 以外にインストールするものもありません — そして、その機能面を、グラフが実行された後に始まる仕事の半分に費やしています。

実際の違い

彼らのローカルサーバーは、管理対象として ComfyUI インストールを扱います: 起動、停止、別バージョンへの切り替え、サインイン、ホストされたパートナーモデルへのクレジット使用、ログの追跡、パックの更新。これはこのリポジトリが持つ範囲より本当に大きく、プラットフォームベンダーが所有するのに最も適した領域です — ComfyUI や comfy-cli、パートナー API が動くたびに変化します。必要なのが インストールを駆動して保守すること なら、彼らのものを使ってください。

こちらは、管理対象を出力とみなします — それが私たちが責任を負っていた部分だからです。これは Alienrobot 自身のプロダクション業務から生まれました。そこでは、グラフが実行されることが仕事の始まりであり、終わりではありません。ここにはプロセスを起動したりクレジットを消費したりするものは何もありません。その代わりに: ピクセルをモデルに返し、2つのパスを差分してドリフトが隠れない画像にし、ブリーフが実際に要求するものを採点し、そして圧縮されたコンテキストがそれを失わないように best-so-far(現時点での最良)をディスク上に保持します。それが他の誰も持っていない部分です — /view を呼ぶのが難しいからではなく、「エージェントに look させ、リグレッションの上に構築するのを止めさせる」ことが、エンドポイントではなく規律だからです。

this repo

Comfy-Org/comfy-mcp

ComfyUI との通信方法

その HTTP API(/prompt、/object_info、/view)

comfy-cli サブプロセス(comfy … --json)

追加依存

なし(httpx、pillow)

comfy-cli ≥ 1.14、およびそれが認識するインストール

インストールしていない ComfyUI も扱える

はい — URL が到達できるものすべて(シェルを持たないボックスを含む)

部分的に。一部のツールは構造上ローカルのみ

結果を見る

get_image、get_video_frame — ピクセルをモデルに返す

fetch_outputs(inline_images=True)

結果を評価する

compare_images(差分モード)、image_diff_stats、measure_image(タイルシーム / シャープネス)、video_temporal_stats

—

最良のものを保持する

loop_*: ディスク上のラチェット+台帳。元に戻す操作はツール呼び出し

—

パラメータを探索する

loop_sweep — 1 つの入力、N 個の値、1 回の呼び出し、実行に記録

vary_workflow — スロット値の直積をファイルに出力

グラフの事前チェック

check_workflow — 欠落パック、欠落モデルファイル、未設定の必須入力、デッドワイヤー、出力ノードなし、を 1 つの回答で

validate_workflow + workflow_deps + テンプレート local_check

サブグラフテンプレート

展開され再配線される(昇格したウィジェットは保持)

クライアント側で展開

探索のトークンコスト

コンパクトなノード表記(object_info 比 93% 削減、987 ノード); FlowZip グラフは litegraph 比 ~72% 削減

明言された目標ではない

不足分のインストール

ComfyUI-Manager: install_node_pack, install_model, restart_comfyui, update_comfyui

レジストリ install_node, download_model(バックグラウンド実行、キャンセル可能)、完全アップデート/バージョン切り替え

ゼロから稼働まで

エージェントが行う: comfy_install はこのマシンから埋められたプロンプト(既存インストール、この Python、このマシンのアクセラレータ)であり、失敗した呼び出しは開始/インストールコマンドを返す

ターミナルで comfy install を実行するよう指示する; launch_comfyui / stop_comfyui / switch_comfyui_version は既に存在するインストールを操作する

ComfyUI プロセスの実行

いいえ — 再起動のみ(Manager 経由); シェルはエージェントが所有

comfy-cli サブプロセスなので、可能

ホスト型/パートナーモデル、アカウント、クレジット

意図的になし

auth_login, partner_generate, 支出同意ゲート

ジョブ制御

submit_workflow, job_status, cancel_job, get_queue, interrupt

1 つの job ツール: status / wait / watch / cancel / queue

MCP サーフェス

43 ツール + 2 プロンプト + 3 リソース

39 ツール

サイズ / ライセンス

約 3,700 行、MIT

約 16,000 行、AGPL-3.0-or-later または商用

作者

Alienrobot — 当社自身の VFX/生成的作業のために構築され、使用されている

ComfyUI チーム、プラットフォーム本体と並行して

対応範囲

ループ: 発見、変換、出力の評価

インストール全体: ライフサイクル、アカウント、パートナー API、パック

どちらを使うか

  • GPU なし → Cloud MCP。ローカルにあるものは、手元にないハードウェアに対抗できない。

  • 「インストールして、実行して、動かし続ける」 → Comfy-Org/comfy-mcp。ライフサイクル、パートナーモデル、バックグラウンドダウンロード、バージョン固定。

  • 「最初の結果は動く、そして訓練された目がそれを拒否する」 → これ。 6 本の指、ずれた背景、硬いマットエッジ、目に見えるタイルシーム、沸騰するクリップ。それがループであり、これは完全にそのループを中心に構築されたサーバーだ。

これらは組み合わせ可能です。両方を実行することを妨げるものは何もなく、ツール名も衝突しません。 (パッケージ名は衝突しました。このリポジトリも一時的に comfy-mcp という名前でした。これは ComfyUI の名前空間を所有する人々と争っても勝ち目のない議論です。そのため comfyui-loop-mcp となり、インポートパッケージは comfy_loop で、両方をサイドバイサイドでインストールできます。)

追加しないもの

競合他社の機能リストを丸ごと取り込むと、結局は平凡なツールが 2 つになるだけです。彼らから取り入れたものは、ループが必要とするもの — 事前チェック、ジョブ状態、ログの追跡、VRAM の余裕、アップデート — だけです。意図的に除外しているものは次のとおりです:

  • アカウント、クレジット、ホスト型パートナーモデル。 売り文句は「あなたのマシンから何も出て行かない、サインアップ不要、メーターなし」です。クレジットゲートはそれと矛盾します。Kling や Veo を使いたいなら、向こうのサーバーが同意ゲート付きで適切に行います。このリポジトリが再発明する理由はありません。

  • ComfyUI プロセスの起動と停止。 HTTP クライアントは実行していないサーバーを起動できません。また、シェルを持たないボックスにこれを向けることはエッジケースではなくサポート対象です。restart_comfyui(Manager 経由)が正直な限界です — しかし「できない」は「助けない」と同じではありません。エージェントは通常シェルを持っているので、到達不能なサーバーはこのマシン用のインストール/起動コマンドを返し、エージェントがそれらを実行することを期待します。このサーバーも Comfy-Org のものも、あなたの代わりに ComfyUI をインストールしません(向こうはターミナルで comfy install を実行するよう促します)。違いは、ここでは指示がツール呼び出しを通して返され、それに対応できる人に向けられていることです。

  • ワークフローの保存/共有/サービスとしての再現。 save_workflow は往復検証済みのファイルを渡します。その後それがどこに置かれるかはあなた次第です。

Related MCP server: ComfyPilot

ループにマッピングされた 3 つの MCP プリミティブ

プリミティブ

公開内容

ループ工程

ツール

check_comfyui, list_nodes, get_node, list_models, search_models, search_templates, get_template

推測するな、発見せよ

find_missing_nodes, install_node_pack, install_model, restart_comfyui, update_comfyui

拡張(テンプレートが必要とするものをインストール)

check_workflow

GPUが関与する前に検証

inflate_workflow, flowzip_to_api

圧縮(トークン効率の高いグラフ)

template_slots, run_template

上書き付きで実績のあるテンプレートを実行(グラフはコンテキスト不要)

upload_image, submit_workflow

ビルド → 実行

get_result, get_image(実際の画像を返す)

見る

loop_start, loop_record, loop_sweep, loop_best, loop_ledger, loop_finish, loop_report

ラチェット+台帳、ディスク上

system_stats, get_queue, job_status, cancel_job, interrupt, free_vram, comfyui_logs

制御

プロンプト

comfy_loop(完全メソッド)、comfy_skill(コンパクト)、comfy_install(ブートストラップ)

規律全体をひとつのコマンドで

リソース

comfyui://object_info(ライブ)、comfyui://loop-method、comfyui://skill

真実+ドキュメント

3つの点が、これを単なるAPIラッパーではなくループ対応にしている:

  1. get_image はレンダリング済みの出力をモデルに返す——これが「見る」を現実にするステップだ。モデルは文字通りピクセルを見る。

  2. ツールの応答がループを促進する。 submit_workflow は成功時に*「有効だが正しくはない——さあ見よ」と言い、拒否時には「イテレーションではない——指定されたノードを修正して再提出せよ」と言う。get_result は指示で締めくくる:「ここで止まるな——見て、それからパラメータを1つ変更するか、ブリーフが満たされたと宣言せよ」*。

  3. サーバー指示にはループ優先ポリシー(下記参照)が含まれており、クライアントが接続時に注入する。

ループ優先ポリシー(サーバー指示)

ハンドシェイク時にサーバーはエージェントにいつループすべきか、いつすべきでないかを伝える:

  • 常にJSONを書く前にライブAPIから発見し、実行して検証する;node_errors はイテレーションではない——修正して再提出する。

  • ループを優先するのは、訓練された目が出力を拒否しうる場合——構図/数、類似性、マット/エッジ品質、アップスケール/レストア、再ライティング、テクスチャの継ぎ目、動画の時間的安定性、「見た目を良くする」など。

  • ラチェット——これまでの最良を保持し、それを上回る場合のみ変更を維持し、そうでなければ元に戻して別の方法を試す;プラトーではパラメータ → 配線 → モデルの順にピボットする。ブリーフに客観的テストがある場合のみそれをゲートとし、それ以外は目視で判断する。

  • ループをスキップするのは機械的なタスクのみ(フォーマット変換、純粋なAPIクエリ、またはユーザーが実行可能なグラフだけを明示的に望む場合)。

  • 迷ったときは、完了を宣言する前に少なくとも1回は見て批評するパスを行う。

ラチェット/台帳/ピボットはKarpathyのAutoResearchループから適応したもので、主観的な画像作業向けに調整されている(客観的なゲートは存在する場合のみ;永久に走らせる代わりに人間の承認チェックポイントを置く)。これらのポリシー行はサーバーの instructions +ツール応答にあり、完全なメソッドは comfy_loop プロンプトにあり、リポジトリのループドキュメントをそのまま提供する。

MCPは強制できない——能力と指針を提供するだけだ。これによりループは、エージェントが繰り返し優先するよう指示される強力で明確に範囲設定されたデフォルトとなる。Claude Codeで確実な保証を得るには、同じテキストを常時オンのスキルとしてインストールせよ:

mkdir -p ~/.claude/skills/comfyui-workflows
cp comfy_loop/docs/SKILL.md ~/.claude/skills/comfyui-workflows/

スキル=常時オンの規律、MCP=それが駆動するツール。これは comfy_skill プロンプトが提供するのと同じファイルなので、両者が矛盾することはない——そして独自の古いレシピを保持する代わりに、ブートストラップは comfy_install に委ねる。


ツールリファレンス

発見

ツール

引数

戻り値

check_comfyui

—

ループステップ 0、および実際の事前チェック。何も応答しない場合、このマシン固有の対処方法を返します — 見つかったインストールを開始するか、新規作成するか、リモート URL のトンネルを開くか(トラブルシューティング を参照)。応答する場合も、ここからレンダリング成功までの間に何が立ちはだかっているかを挙げます: CPU 上で動作している torch(すべてのレンダリングは動作しますが、約50倍遅く、エラーは報告されません)、ディスク上に重みがない(完全に機能する ComfyUI だが何もレンダリングできない)、ComfyUI-Manager がない(修正するための2つのコマンド付き。restart_comfyui 自体が Manager ルートのため)。それ以外は: ノード数、ComfyUI/torch のバージョン、デバイスごとの VRAM 空き vs 合計、ComfyUI-Manager が存在するか(Manager なし = インストール不可、再起動不可)、キューがすでにビジーかどうか — または明確な「到達不能」。

list_nodes

keyword=""

クラス名または表示名が一致するノード(スキルのクラス限定検索の厳密なスーパーセット)。キーワードを省略すると件数を返します。

get_node

class_name, verbose=False

1つのノードのインターフェースをコンパクトな @Name +req:T ?opt:T -out:T として返します(トークン約90%減)。verbose=True では完全な JSON(デフォルト値、最小/最大)を返します。

list_models

class_name, input_name=""

ローダーがディスク上で提供する実際のモデルファイル(グラウンドトゥルース)を、その enum から読み取ります。レガシーリストと COMBO エンコーディングの両方に対応します。ファイル名を捏造することはありません。

search_models

keyword="", model_type=""

ダウンロード可能なモデルのカタログ(ComfyUI-Manager のリスト)。まだ持っていない checkpoints/LoRAs/VAEs/upscalers を見つけられます。各結果はインストール済みかどうかを示します。インストールは install_model を使用します。

search_templates

keyword="", source="online"

online(デフォルト): 完全なオープンカタログ(Comfy-Org/workflow_templates、約550件)を、名前/タイトル/説明で GitHub からライブ検索します — インストール不要。installed: この ComfyUI にあるものだけ。

get_template

name, pack="", source="online", fmt="flowzip"

テンプレートを取得します。fmt="flowzip"(デフォルト)はコンパクトな FlowZip テキストです(未加工の litegraph JSON より中央値で約72%小さい)。fmt="json" は完全な litegraph。どちらにせよ litegraph です — 送信前に flowzip_to_api で変換してください。オンラインテンプレートには、あなたが持っていないノード/モデルが必要な場合があります — find_missing_nodes で確認してください。

inflate_workflow

flowzip

FlowZip テキストを完全な litegraph JSON に展開し直します。

flowzip_to_api

flowzip

FlowZip/litegraph → API/プロンプト形式(submit_workflow 用)に変換します: リンクを解決し、ウィジェット値を名前付き入力にマッピングし(型強制)、Reroute パススルーをたどって実際の生成元まで戻ります — Reroute ノードにはバックエンドクラスがないため、それを指すリンクは配線し直す必要があります。そうしないと API グラフが存在しないノードを参照することになります(未接続および循環チェーンは報告され、クラッシュしません)。サブグラフは展開され、スキップされません: 内部は <instance>:<inner> という名前空間で届き、境界をまたいで配線し直され、プロモートされたウィジェット値は保持されます。未知のクラスは引き続きスキップされ報告されます。実行前に確認してください。check_workflow が GPU 時間を費やす前に残りを捕捉します。

template_slots

name, source="online", pack=""

テンプレートの上書き可能な入力(node_id → params + 現在の値)を完全なグラフを読み込まずに一覧表示します — サブグラフ内のパラメータも含みます。また、作者自身の Note/MarkdownNote テキストも返します。そこにはトリガーワードと必要な重みが実際に含まれており、命令としてではなく信頼できないデータとして引用符付きで示されます。

run_template

name, overrides={}, source="online", pack=""

動作確認済みのテンプレートを {node_id: {input: value}} オーバーライドで実行します — 取得 → 変換 → 適用 → 送信 — グラフをコンテキストに展開せずに。その後 get_result/get_image を使用します。サブグラフテンプレートも実行されます — その内部は途中で展開されます。

拡張(テンプレートが必要とするものをインストール — ホストに ComfyUI-Manager が必要です)

ツール

引数

戻り値

find_missing_nodes

name, pack="", source="online", workflow=None

ノードクラスを /object_info と差分比較し、欠落している各ノードをインストール可能なパック ID に解決します。テンプレートまたは既に持っている workflow(API形式または litegraph)に対して動作し、サブグラフを再帰的に走査します。読み取り専用。

install_node_pack

pack_id, version="latest"

ComfyUI-Manager のキューを介してパックをインストールします(信頼されたレジストリ、任意のコードは実行されません)。その後、再起動が必要です。

install_model

name

search_models からカタログモデルを Manager 経由で適切な models/<type>/ フォルダにダウンロードします。再起動は不要です — list_models で確認してください。

restart_comfyui

—

ComfyUI を(Manager 経由で)再起動し、新しいノードが /object_info に登録されるようにします。失敗を正直に報告します。HTTP レスポンス が返っても、再起動されたわけではありません。

update_comfyui

target="comfyui"|"nodes"|"all"

Manager のキューを介して ComfyUI コアおよび/またはインストール済みのすべてのパックを更新し、その後再起動が必要だと伝えます。サードパーティのコードを実行します — 先にその旨を伝えてください。ループ途中では実行しないこと: 以前のパスが古いコードに対して測定されたラチェットの下にノードの動作を移します。

検証 — GPU が関与する前に知り得るすべて

ツール

引数

戻り値

check_workflow

workflow(API辞書または litegraph)

"これはこのマシンで実行できるか" へのひとつの答え: 所持していないノードクラス(同じパスでパック ID に解決済み)、そのローダーのリストにないモデルファイル名(実際に持っている最も近いもの付き)、未設定のままの必須入力、存在しないノードを指す接続、ノードで宣言された範囲外の値、そして出力ノードのないグラフ — これはグリーンで実行され、表示するものが何も生成されません。/prompt もこれらを検出します: 送信ごとに1つ、チェックポイントの欠落はパックの欠落とまったく同じに見えます。ここでクリーンとは整形式という意味であり、正しいという意味ではありません — それでもピクセルを確認する必要があります。

構築 → 実行 → 確認

ツール

引数

戻り値

upload_image

path, overwrite=True

ローカル画像を ComfyUI の input/ ディレクトリにアップロードし、LoadImage ノードで参照する名前を返します。

submit_workflow

workflow(API形式の dict), client_id

成功時: prompt_id + 「今すぐ確認せよ」という促し。失敗時: node_errors + 「そのノードを修正して再送信せよ」という促し。

get_result

prompt_id, timeout_s=120

/history をポーリングし、各出力の filename/subfolder/type を返し、キャッシュから提供されたノード数を報告します(シードを固定していれば、編集箇所より下流のノードだけが再実行されます — 反復は意図的に安価です)。さらに、確認して反復するよう指示します。実行途中で停止した実行は、誤解を招く「完了したが出力なし」ではなく、失敗したノードとその例外として返されます(OOM の場合は「free_vram してから解像度を下げる」という促し)。

get_image

filename, subfolder="", image_type="output"

実際の画像をモデルに返し、ピクセルを判断できるようにします。

compare_images

filename_a, filename_b, mode="side_by_side"|"difference", amplify=1.0

比較結果を画像として返します。difference = 0.5+0.5*(a−b): 同一の領域はフラットな中間グレーになり、目では決して気づかないドリフトが浮き上がります。MCP クライアントには ffmpeg を実行するシェルがありません — これがないと「出力を diff する」ことは実行できません。

image_diff_stats

filename_a, filename_b

平均/最大絶対差分 + 変化したピクセルの割合(%) — 「意図した箇所だけを変更した」ことを確認するゲート。フレームをこっそり書き換えてしまう「小さな調整」を捕捉します。

measure_image

filename, metric="sharpness"|"tile_seam"|"brightness"

要件に客観的テストがある場合の、ラチェット用の客観的スコア。tile_seam は、ラップアラウンドの継ぎ目を内部の継ぎ目と比較します(~1.0 = 正真正銘のタイル、>2 = 実際のシーム — 目が素通りするような主張)。sharpness = エッジエネルギーで、実際のディテールで上昇し、パスが単に画像をぼかしただけなら低下します。

video_info

filename, subfolder=""

ビデオ出力の寸法、fps、フレーム数。フレームにインデックスを付ける前に呼び出してください — 範囲が必要ですし、比較しようとしている2つのクリップがそもそも同じ長さかどうかを知る必要があります。

get_video_frame

filename, frame=0, subfolder=""

ビデオ出力の1フレームをフレームインデックス指定で画像として返します。get_image のビデオ版: get_result はすでに gifs/videos を報告しますが、他のすべての確認ツールは Pillow のみで mp4 をデコードできません。そのため、VHS/AnimateDiff/WAN のグラフでは「get_image を呼び出して確認する」ことは実行不可能でした。

compare_video_frames

filename_a, filename_b, frame=0, mode="side_by_side"|"difference", amplify=1.0

両クリップの同じフレームインデックスで同じ比較を行います。タイムスタンプで比較すると、長さが異なった時点で(フレーム上限、トリム、fps の違い)静かに誤ります — 無関係な2つの瞬間を完全な自信を持って比較することになります。フレーム数が一致しない場合、警告は画像に焼き付けられ、読み飛ばせるテキストとしては残りません。

video_temporal_stats

filename, stride=1, max_frames=120, roi=None

フレーム間の不安定性を数値化したもの — 「ボイル(チラつき)するか?」に対する客観的なゲートであり、これは単一の静止画では決して示せません。単純な連続フレーム差分なので、実際の動きもカウントされます。変更前後の同じクリップに対して使うか、静的であるべき領域に roi を渡してください。既知のペアで検証済み(生のフレーム入れ替え 3.53 → オプティカルフロー平滑化 2.38)。

ループは永続的な状態として — ラチェットはツールであり、記憶の訓練ではない。 長いループは圧縮される。もし現時点での最良と台帳がモデルのコンテキストにしか存在しなければ、 ラチェットは静かにラチェット動作を停止し、モデルはすでに拒否した変更を再試行し、 退行を最終結果として渡すことになる。だからそれらはディスク上に置かれる。

ツール

引数

戻り値

loop_start

brief, gate=""

実行を開始 → run_id。gate はブリーフに含まれる場合の客観的テスト(「シームレスにタイル状に並ぶ」「りんごがちょうど3個」)。

loop_record

run_id, change, outcome, graph=None, score=None

パスを記録し、ラチェットを適用する。"better" はそのグラフを新しい最良として保存する(元に戻し可能)。"worse"/"same" は最良のグラフをそのまま返すので、元に戻すのは1回の呼び出しで済む — さらに、すでに試した変更のリストも返すので、行き詰まりを繰り返さない。両方のパスが客観的な score を持つ場合、数値が判定を上書きする — 終わりにしたいモデルは退行を "better" と呼ぶからだ。

loop_sweep

run_id, workflow, node_id, input_name, values

同じグラフを1つの入力の最大8つの値にわたって、1回の呼び出しで実行する — 推論で到達できない値(denoise、cfg、strength)のため。他のすべては同一に保たれるため、出力はちょうど1つの変数だけが異なる。値 → prompt_id テーブルは実行内に書き込まれるので、圧縮されたモデルはスイープを再実行する代わりに loop_ledger からそれを復元する。スイープは1つの記録されたパスを生成し、N個ではない。

loop_best

run_id

現時点での最良のグラフ。圧縮後の真実の源 — あなたの記憶ではない。

loop_ledger

run_id

追記専用のループログ:すべてのパス、何が変わったか、それが何をしたか。圧縮後にスレッドを復元する。また、承認時にユーザーに渡すログでもある。

loop_finish

run_id, summary=""

収束チェックポイントで閉じ、承認のために提示する最終的な台帳と最良のグラフを返す。

loop_report

run_id, out_path=""

実行全体を1つの自己完結型HTMLページとしてレンダリングする — すべてのパス、何が保持されたか、何が元に戻されたか、サムネイルはbase64でインライン化され、ComfyUIをオフにしても開ける。最終画像は何も証明しない。捨てたパスこそが、ループが収束したことを示すのだ。

配信

ツール

引数

戻り値

save_workflow

workflow (API dict), name="", save=True

API → UI/litegraph に変換し、人間が開いて編集できるようにし、ComfyUIのワークフローリストに保存する。ラウンドトリップ検証済み:結果はAPIに変換し直され、入力と差分比較される。widgets_values は位置指定であり、静かな1つずれがパラメータをずらすからだ — もっともらしいが間違ったファイルは、何もないより悪い。

制御

ツール

引数

戻り値

system_stats

—

デバイス / VRAM(解像度やバッチの調整時、またはOOM後に有用)。

get_queue

—

実行中と保留中のもの。

job_status

prompt_id

ブロックせずに1つの実行の状態:キュー済み(位置付き)、実行中、N個の出力で完了、またはそれを殺した実行エラー。複数が進行中の場合に必要なもの — たとえば loop_sweep。

cancel_job

prompt_id=""

1つのキュー済み実行を削除する。または、そのIDが実行中のものであれば中断する。IDなしでは保留キューをクリアし、実行中のジョブには触れない。interrupt は乱暴なバージョン。

interrupt

—

現在の実行をキャンセルする。

free_vram

unload_models=True

モデルをアンロードし、エグゼキュータのキャッシュをリセットする(POST /free)。ループ自身の軽量さはここでは逆効果になる — キャッシュされたパスはVRAMだからだ — したがって、OOMしたグラフを書き直す前に試すべき安価な方法。即時ではない(キューワーカーの次の反復で反映される)。別のプロセスのVRAMには触れない。system_stats で確認すること。

comfyui_logs

lines=60, grep=""

ComfyUI自身のログの末尾を表示する。そこでは失敗が自ら説明する:ノード内のトレースバック、OOM、起動時にインポートに失敗したカスタムノード(それが object_info にそのクラスが存在しない理由だ)。

プロンプト: comfy_loop(完全自律メソッド)と comfy_skill(コンパクトな スキル)。どちらもリポジトリのmarkdownから逐語的に提供される。さらに comfy_install — ブートストラップ手順。サーバーが実行されているマシンに対して生成される: すでにインストールがある場合のインストール方法、venvを構築するためのインタープリタ (このサーバー自身のもの。Pythonが解決の前提条件になることはない)、comfy-cli と git が存在するかどうか、そしてこのボックスのアクセラレータが実際に必要とする torchビルド(CUDA / ROCm / MPS / なし)。サーバーはそのどれも実行できない。 エージェントは実行できる。そしてそれが宛先だ。 リソース: comfyui://object_info(ライブの完全ダンプ)、comfyui://loop-method、 comfyui://skill。


ループが実際に動くのを見る

このMCPサーバーを通じて実際のComfyUI(RTX 4090、SD1.5)に対して完全に駆動される。 ブリーフ:「暖かい木のテーブルの上の1個の赤いりんごの、くっきりとシャープに焦点の合ったマクロスタジオ写真、細かい皮の質感、豊かなディテール。」 シードは42に固定され、各パスがちょうど1つのつまみを変更し、効果が帰属可能になる。 客観的指標はラプラシアン分散(標準的なシャープネス/焦点の尺度)。

5つのループパス、左から右へ:柔らかく平らなりんごが、くっきりと彩度の高い、豊かなテクスチャのものへとシャープになる

パス

1つの変更

シャープネス (varLap)

見た目による判定

1

ベースライン — 6ステップ、cfg 2.5

425

柔らかく、平らで、マット。最も弱い。

2

ステップ 6 → 24

1204

よりシャープ — ただし高い数値は木目によるもので、りんごの皮はまだプラスチックのよう。

3

cfg 2.5 → 7.5

515

りんごは豊かになる(彩度が上がり、皮に斑点)— 背景が柔らかくなったため指標は下がる。

4

euler → dpmpp_2m + karras

740

勝者。 くっきりしたハイライト、目に見える皮目、信じられる木。

5

ステップ 24 → 36

661

≈ パス4。収穫逓減 → 停止。

ループが基づいている教訓をライブで捉えた: メトリクスはパス 2 でピークに達したが、 パス 2 が最良の画像ではない — そのスコアはリンゴのディテールではなく背景テクスチャによって 水増しされていた。勝者(パス 4)は見ることで選ばれた。緑の数字は 有効であって、正しいわけではない。(example_apple.png がそのパス 4 の結果である。)

…そしてもう半分: モデル側が間違っている場合

リンゴの例はメトリクスを盲信できない理由を示している。この実行例は モデルを盲信できない理由を示している — これこそがラチェットがツールであり プロンプトのメモではない理由そのものである。

指示: "シームレスにタイル可能な石畳テクスチャ — ラップに目に見えるシームがない" 客観的ゲート付き(measure_image → tile_seam)。シードは全体で同じため、 各パスはちょうど 1 つのことだけを変更する。以下のすべてのテクスチャは 2×2 にタイルされている — シームは隠れる場所がない。

2×2 にタイルされた 3 つのパス: ベースラインはシームあり、円形タイルが修正、x_only がシームを復活させて差し戻し

パス

1 つの変更

tile_seam

ラチェット

1

ベースライン SDXL

h 1.77 · v 1.23 → 境界値

保持(初回)

2

SeamlessTile + MakeCircularVAE

h 0.78 · v 1.12 → シームレス

新記録

3

tiling → x_only

h 1.03 · v 1.56 → シーム復活

差し戻し

パス 3 でモデルは loop_record に結果が "better" だと伝えた。実際は違った: x_only は水平にタイルし、垂直方向のラップは壊れたまま — 右の画像で 石が水平の継ぎ目に沿って平らに切り落とされているのが見える。客観スコアが その主張を覆し、パス 2 を復元し、良いグラフを渡し返した。

これこそがこのサーバーが防ぐために存在する失敗である: 終わりたいエージェントは 回帰を改善と呼ぶ。 もし best-so-far がディスク上ではなくモデルのコンテキストに あったなら、その回帰が最終回答になっていただろう。


インストール

短いバージョン: エージェントにやってもらう。 これを Claude Code(または シェルを持つ任意の MCP クライアント)に貼り付けて、そこで止める:

https://github.com/huikku/comfyui-loop-mcp から ComfyUI loop MCP をセットアップ — クライアントに登録し、ComfyUI が動いていなければインストールと起動も行う。

あなたの手を借りずにそれを完了するために必要なものはすべて揃っている: サーバーの登録は claude mcp add 1 つで、接続後には comfy_install プロンプトが あなたのマシン用のブートストラップを返す — 既存の ComfyUI の起動コマンド、 venv を構築するインタープリタ、カードに実際に必要な torch ビルド、 ComfyUI-Manager、モデルの置き場所。check_comfyui はその後、まだ欠けているもの (ウェイトなし、torch が CPU 上、Manager なし)をレポートではなく エージェントが修正すべきものとして名指しする。

文章よりも設定を貼り付けたい場合、これはサーバーを GitHub から直接実行する — クローンも pip install も不要:

{
  "mcpServers": {
    "comfyui": {
      "command": "uvx",
      "args": ["--from", "git+https://github.com/huikku/comfyui-loop-mcp", "comfyui-loop-mcp"],
      "env": { "COMFYUI_URL": "http://localhost:8188" }
    }
  }
}

Claude Code なら 1 行:

claude mcp add comfyui -- uvx --from git+https://github.com/huikku/comfyui-loop-mcp comfyui-loop-mcp

代わりにリポジトリをクローンすると .mcp.json がすでにある — Claude Code は最初のオープンでサーバーを提示し、コマンドは一切不要。 追加後はクライアントを再接続する; MCP サーバーは接続時に読み込まれる。

開発する場合:

git clone https://github.com/huikku/comfyui-loop-mcp && cd comfyui-loop-mcp
pip install -e .            # or: uv tool install --editable .

Python ≥ 3.10 と到達可能な ComfyUI が必要。mcp[cli]、httpx、 anyio、pillow をインストール。MCP SDK 1.x と 2.x の両方で動作 — 2.0 は FastMCP を MCPServer に改名し、Image ヘルパーを移動したが、 サーバーはどちらの方法でもインポートする。

comfy-mcp としてインストールしていた場合? その名前は PyPI 上で Comfy-Org のサーバーのものであるため、 これは現在 comfyui-loop-mcp(インポートパッケージ comfy_loop、コマンド comfyui-loop-mcp)。最初に pip uninstall comfy-mcp を実行し、MCP クライアント設定を更新する。ディスク上の既存のループ実行は自動的に見つかる — COMFY_LOOP_STATE_DIR を別の場所に指定するまで、古い ~/.comfy-mcp/runs が 引き続き使用される。

常時オンの規律(Claude Code)

このメソッドはスキルとしてもインストールされるため、頼まれるのを待つのではなく トリガーワードで読み込まれる — エージェントにもこれを頼むか、または:

mkdir -p ~/.claude/skills/comfyui-workflows
cp comfy_loop/docs/SKILL.md ~/.claude/skills/comfyui-workflows/

comfy_skill プロンプトが提供するファイルと同じものなので、スキルとサーバーは ずれることがない。

設定

環境変数

デフォルト

目的

COMFYUI_URL

http://localhost:8188

ComfyUI サーバー

COMFYUI_ONBOARDING_DIR

このパッケージの上のリポジトリルート

comfy_loop / comfy_skill プロンプトがマークダウンを読み込む場所

COMFYUI_TEMPLATES_REF

main

オンラインテンプレートカタログが読み込む Comfy-Org/workflow_templates の Git 参照

COMFYUI_TEMPLATES_LIVE

未設定

1 に設定すると、バンドルされた圧縮スナップショットではなく GitHub から最新のカタログインデックスを取得する

COMFY_LOOP_STATE_DIR

~/.comfyui-loop-mcp/runs

ラチェットと台帳の置き場所。実行がすでにある場合は旧名の ~/.comfy-mcp/runs にフォールバックする

リモートの ComfyUI を指す

ComfyUI は通常 127.0.0.1 にバインドするため、別のマシン上の ComfyUI は デフォルトではネットワーク越しに到達できない。2 つのオプションがある:

  • SSH トンネル(最も簡単、ComfyUI をプライベートに保つ): ポートを転送し、 COMFYUI_URL は localhost のままにする:

    ssh -N -L 8188:localhost:8188 your-remote-host
    # COMFYUI_URL stays http://localhost:8188
  • ComfyUI をネットワークにバインドして直接指す(信頼できるネットワークのみ — 認証なしの API を公開することになる):

    python main.py --listen 0.0.0.0 --port 8188
    # COMFYUI_URL=http://<remote-ip>:8188

使用方法

  1. エージェントで comfy_loop プロンプトを読み込む(または comfyui://loop-method リソースを読ませる)と、完全なメソッドが取り込まれる。 クライアントがサーバー指示を注入する場合、ループ優先ポリシーは すでに有効になっている。

  2. 目標を与える。check_comfyui → list_nodes / get_node / list_models → API 形式の JSON を構築 → submit_workflow → get_result → get_image を実行し、批判と反復を — パスごとに 1 つの変更 — 欠陥を名指しできなくなるまで行い、承認のために結果を提示する。

トラブルシューティング

  • 「ComfyUI に到達できません」 — 返信は苦情ではなく一連の指示であり、 このサーバーにはないシェルを持つエージェント宛てである: このマシン上の ComfyUI($COMFYUI_PATH、comfy-cli のワークスペース、~/ComfyUI、~/comfy、 ~/code、~/github、/opt)を探し、そのインストールの venv python を使った 起動コマンドか、なければクローン + venv + Manager + 起動シーケンスを返す。 COMFYUI_URL がリモートの場合、ローカルへのインストールは意図的に 提案しない — それは間違ったマシンに 2 つ目の未使用 ComfyUI を残すだけであり、 代わりに SSH トンネルを提示する。すべてのツールがこれを返す — check_comfyui だけでなく、アドバイスはトランスポートに付加されている。

  • ノード/モデルが見つからない — ComfyUI 側でパック/モデルをインストールし、 その後 ComfyUI を再起動して /object_info に反映させる(それまで API は 古い情報のまま)。

  • get_image が何も返さない — グラフに SaveImage / PreviewImage ノードがあることを確認する; get_result は実際に生成されたものを列挙する。

  • install_node_pack がブロックされる / 何もしない — インストールツールは ホストに ComfyUI-Manager が必要で、 Manager のセキュリティレベルが API インストールを許可している必要がある。 インストール後、/object_info に新しいノードが表示される前に restart_comfyui が必要。

  • find_missing_nodes が「間違った」パックを選ぶ — 複数のパックが同名の ノードをエクスポートできる; 解決は最初のレジストリ一致を取る。インストールが クラスを提供しない場合、報告されたパックを確認し、正しいものを明示的に インストールする。

ライセンス

MIT。

Available Tools

32 tools
check_comfyuiA

Confirm ComfyUI is up and reachable (loop step 0).

Returns the installed-node count and device/VRAM. If this fails, ComfyUI isn't running or is on another port — do not start guessing node names.

ParametersJSON Schema
NameRequiredDescriptionDefault

No parameters

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.5/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Discloses that the tool checks connectivity and returns node count and device/VRAM. It also warns about failure implications. No annotations exist, so the description carries the full burden, but it omits potential side effects or permissions.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two concise sentences that front-load the purpose and immediately provide failure guidance. No wasted words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given zero parameters and an existing output schema, the description fully covers the tool's behavior, including its role in a loop, return data, and failure implications.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

No parameters exist, so baseline 4 applies. The description adds value by explaining the return values (installed-node count, device/VRAM) beyond the input schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description uses specific verb 'confirm' and resource 'ComfyUI reachability', clearly stating the tool's purpose as a connectivity check. It distinguishes from sibling tools like 'system_stats' by focusing on reachability and loop integration.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Provides clear guidance: use for initial connectivity check, and if it fails, do not guess node names. However, it does not explicitly contrast with other tools like 'system_stats' or 'get_node' for when not to use.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

compare_imagesA

See what changed between two passes (loop step 3: LOOK — the comparison).

mode="side_by_side": both outputs on one canvas — what moved, at a glance. mode="difference": 0.5 + 0.5*(a-b) — identical regions read FLAT MID-GRAY and only real changes pop. This is how you answer "did the background actually stay put?", which the eye is bad at. Raise amplify (e.g. 4.0) to surface subtle drift.

Use it every pass against your best-so-far: a change that altered more than you intended is a regression even if the new bit looks nice.

ParametersJSON Schema
NameRequiredDescriptionDefault
modeNoside_by_side
amplifyNo
filename_aYes
filename_bYes
subfolder_aNo
subfolder_bNo

TDQS

A4/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, but the description details both modes (side_by_side layout, difference formula with visual result) and the amplify parameter effect. Does not explicitly state it is read-only but implies it.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loaded with purpose, uses bullet-like structure. Somewhat lengthy but each part adds value; could tighten file parameter explanation.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no annotations, no output schema, and 6 parameters, the description covers key behavioral details (mode, amplify, use case) but omits file parameter semantics and return value information, leaving gaps.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 0%, so description must compensate. Explains mode and amplify well (2 of 6 parameters), but leaves filename_a, filename_b, subfolder_a, subfolder_b undocumented. Partial coverage.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool compares two images ('See what changed between two passes') and ties it to a loop step, distinguishing it from siblings like image_diff_stats (numerical stats) and get_image (retrieve).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Provides practical guidance: use every pass against your best-so-far, and explains when to use each mode. Lacks explicit when-not-to-use or alternative tools, but context is strong.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

find_missing_nodesA

Diff a template's nodes against what's installed, and resolve each missing node to the pack that provides it (via ComfyUI-Manager's registry mapping).

Fetches the template (same args as get_template), lists the node classes it uses, subtracts what /object_info already has, and for each missing class reports the installable pack id to pass to install_node_pack. Read-only.

ParametersJSON Schema
NameRequiredDescriptionDefault
nameNo
packNo
sourceNoonline

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.3/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description fully carries the behavioral disclosure burden. It explicitly declares the tool is 'Read-only' and details the steps: fetches template, lists node classes, subtracts what's installed, and reports missing nodes with pack IDs. This provides full transparency about inputs, process, and outputs without contradiction.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise, with two clear paragraphs: the first states the core purpose, and the second elaborates the process. Every sentence adds value without fluff. It is front-loaded with the main action.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given that the tool has an output schema (not shown but indicated), the description does not need to detail return values. It covers the tool's purpose, process, and relation to siblings. It explains dependencies (template, object_info, registry mapping). The only gap is parameter documentation, which is evaluated separately. Overall, it provides sufficient context for effective use.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 0% description coverage. The description only mentions 'same args as get_template', which adds minimal context by referencing another tool but does not explain the meaning or usage of the individual parameters (name, pack, source). This is insufficient for an agent to understand parameter semantics without external knowledge.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's function: 'Diff a template's nodes against what's installed, and resolve each missing node to the pack that provides it'. It specifies the action (diff and resolve) and resource (template nodes vs installed). This distinguishes it from siblings like get_template (fetches template) and install_node_pack (installs packs).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description states it uses the same args as get_template, implying it should be used after fetching a template and before installing missing nodes with install_node_pack. It notes the process of subtracting installed nodes, guiding usage context. However, it does not explicitly state when not to use it or mention alternatives beyond referencing siblings.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

flowzip_to_apiA

Convert FlowZip (or litegraph) into API/prompt format ready for submit_workflow.

Inflates FlowZip if needed, then maps the litegraph to the flat API graph using the live object_info (resolves links, maps widget values to named inputs). This is the bridge for authoring/adapting graphs compactly and running them.

Best-effort: subgraph instances and unknown nodes are skipped and reported; widget drift between an old template and a newer node shows up as a node_errors when you submit_workflow the result — read it, fix that node, re-submit. Review the API graph before running.

ParametersJSON Schema
NameRequiredDescriptionDefault
flowzipYes

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.2/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries full responsibility. It details the transformation process (inflating, mapping, resolving links) and discloses limitations (best-effort, skipped subgraphs, widget drift leading to errors). However, it does not explicitly state whether the operation is read-only or has side effects.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise, front-loaded with the main purpose, and each sentence adds value without redundancy. It efficiently conveys the tool's function, best-effort nature, and post-processing advice.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given that an output schema exists, the description need not explain return values. It covers the conversion process, edge cases (skipped nodes, widget drift), and provides guidance. It is reasonably complete for a converter tool, though it could mention prerequisites like live object_info.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The schema has 0% coverage for the single parameter 'flowzip', so the description must compensate. It explains that the parameter is a FlowZip or litegraph and can be inflated, which adds meaning beyond the empty schema. However, it lacks details on format, encoding, or constraints.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description starts with a clear verb 'Convert' and specifies the resource 'FlowZip (or litegraph)' with a target format 'API/prompt format ready for submit_workflow'. It distinguishes itself from siblings like inflate_workflow and submit_workflow by describing its bridging role.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description states that this tool is intended for authoring/adapting graphs compactly and as a step before submitting workflows. It provides guidance on handling errors ('review the API graph before running') but does not explicitly compare to alternatives or specify when not to use it.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

get_imageB

Fetch a rendered output so you can LOOK at it (loop step 3: LOOK — part 2).

Returns the actual image to the model. This is the step that makes the loop work: don't declare a workflow done off a green run — view the pixels, judge them against the brief, then change one thing and re-run.

ParametersJSON Schema
NameRequiredDescriptionDefault
filenameYes
subfolderNo
image_typeNooutput

TDQS

B3.1/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

The description discloses that the tool returns the actual image to the model, implying a read-only retrieval. Since no annotations are provided, the description carries the full burden for behavioral disclosure. While adequate for the core behavior, it omits potential side effects (e.g., does it consume the image? is there caching?) and does not address authentication or rate limits.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is two paragraphs with some repetition (e.g., 'loop step 3: LOOK — part 2' revisited). It could be more concise by merging the first sentence and the loop context. Overall, it is somewhat verbose for the information conveyed.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given three parameters with no schema descriptions and no output schema, the description leaves significant gaps: it does not explain which parameter is required (filename), what format identifiers take, or what the response contains. For a tool that returns binary image data, the absence of error handling or type hints is a deficiency.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The description provides zero information about the three parameters (filename, subfolder, image_type). With 0% schema description coverage, the description must compensate but fails entirely. The agent receives no guidance on how to specify which image to fetch, making correct invocation difficult.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool fetches a rendered output image for visual inspection, using active verbs like 'Fetch' and 'LOOK'. It distinguishes itself from siblings by embedding the tool in a loop workflow (step 3: LOOK), though it does not explicitly compare with similar tools like 'compare_images'.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides explicit usage context: this is part of a loop where the agent should view pixels and judge against the brief before re-running. It advises against declaring workflow done based on a green run alone. However, it lacks explicit when-not-to-use or mention of alternatives like 'compare_images' for comparison tasks.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

get_nodeD
ParametersJSON Schema
NameRequiredDescriptionDefault
verboseNo
class_nameYes

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

D1/5.0
Behavior1/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Tool has no description.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness1/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Tool has no description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Tool has no description.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Tool has no description.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose1/5

Does the description clearly state what the tool does and how it differs from similar tools?

Tool has no description.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines1/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Tool has no description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

get_queueA

Show what's running and pending in ComfyUI's execution queue.

ParametersJSON Schema
NameRequiredDescriptionDefault

No parameters

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.1/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Note is a read operation, no params, output schema exists. Description does not explicitly confirm read-only nature or mention side effects, but tone suggests no destructive actions. Adequate given simplicity.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Single sentence with clear subject and action. No extraneous information. Front-loaded.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given zero parameters and presence of output schema, description is complete enough. No additional details needed.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

No parameters exist; schema coverage is 100%. Description adds nothing beyond schema, but baseline for 0 parameters is 4.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Description clearly states the tool shows running and pending items in ComfyUI's execution queue. Verb 'show' and resource 'execution queue' are specific. Distinguishes from siblings like 'submit_workflow' and 'interrupt'.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Description implies use when checking queue status but does not explicitly state when to use or compare with alternatives like 'system_stats' or 'check_comfyui'. No exclusion criteria.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

get_resultA

Poll /history for a submitted prompt and return its output files (loop step 3: LOOK — part 1, find what was produced).

Blocks up to timeout_s for the run to finish. Returns each output's filename / subfolder / type — feed those to get_image to view the pixels.

ParametersJSON Schema
NameRequiredDescriptionDefault
prompt_idYes
timeout_sNo

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.1/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, so description carries full burden. It discloses blocking behavior up to timeout_s and polling, but does not mention error handling, rate limits, idempotency, or whether it's read-only. Basic behavioral info is present.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is two sentences with a clarifying note. It is efficient and front-loaded with the core action, though the loop reference adds some extraneous context for a multi-step process.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a polling tool with two parameters and an output schema, the description covers the core behavior (blocking, output format, follow-up with get_image). It lacks details on error cases or timeout handling, but the output schema likely documents return values.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema has 0% description coverage, so description must compensate. It explains timeout_s as the blocking duration, and the prompt_id is implicitly the identifier for the submitted prompt. This adds meaning beyond the schema's titles.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool polls /history for a submitted prompt and returns output files, specifying the action (poll), resource (history for a prompt), and result (output files). It distinguishes from siblings like get_image (which views pixels) and get_node (which gets node info).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description says to use after submitting a prompt, blocks up to timeout_s, and directs to feed outputs to get_image. It implies when to use but does not explicitly state when not to use or mention alternatives.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

get_templateA

Fetch one workflow template as a known-good starting point.

source="online" (default): from the official GitHub catalog — no install needed; pack is ignored. source="installed": from this ComfyUI (pack required).

fmt="flowzip" (default): compact FlowZip text — ~72% fewer tokens than the raw litegraph JSON (median), enough to read/adapt the graph. fmt="json": the full litegraph. Either way it's litegraph, NOT the API/prompt format submit_workflow needs — adapt to API (resolve passthroughs, widgets_values -> named inputs via get_node), or inflate a FlowZip with inflate_workflow. If from the online catalog, first confirm you have its nodes/models — run find_missing_nodes then install_node_pack, or verify with list_nodes/list_models.

ParametersJSON Schema
NameRequiredDescriptionDefault
fmtNoflowzip
nameYes
packNo
sourceNoonline

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A5/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations present, so description fully carries the burden. Discloses that output is litegraph format (not API), token reduction stats, and that online templates require node/model verification.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Well-structured with front-loaded purpose, then clear bullet-like explanation of parameters and usage context. Every sentence adds value.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (4 parameters, output schema exists, sibling tools like search_templates and run_template), the description is complete. It explains the output format, prerequisites, and next steps.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 0%, but description explains all four parameters in detail: name, source (behavior of online vs installed), pack (required for installed), and fmt (flowzip vs json, with token savings). Adds significant meaning beyond schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Clearly states the verb 'Fetch', resource 'workflow template', and distinguishes between online and installed sources. Does not explicitly differentiate from sibling 'search_templates' but provides enough context to avoid confusion.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Provides explicit guidance on when to use online vs installed, flowzip vs json, and mentions post-fetch steps like adapting to API format or checking nodes/models via other tools.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

image_diff_statsA

Quantify the change between two passes — the 'I changed only what I meant to' gate.

Returns mean/max absolute difference and the % of pixels that moved. Pair it with compare_images: the picture tells you WHAT changed, this tells you HOW MUCH — and catches the case where a 'small tweak' quietly rewrote the frame.

ParametersJSON Schema
NameRequiredDescriptionDefault
filename_aYes
filename_bYes
subfolder_aNo
subfolder_bNo

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A3.6/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden. It discloses the return values (statistical metrics) and implies a read-only operation, but does not explicitly state that the tool does not modify files or require special permissions. The warning about catching unintended changes adds some transparency, but more explicit statements about safety and side effects would improve it.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is two sentences with a line break, each sentence adds value. It is front-loaded with the core purpose and includes a memorable phrase ('I changed only what I meant to' gate) that helps recall. No extraneous information.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description covers the main return values and the relationship with a sibling tool. However, it fails to address how the optional subfolder parameters affect behavior or defaults. Since an output schema exists (not shown), the return structure can be assumed documented, but parameter usage context is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, meaning the input schema lacks descriptions for all 4 parameters. The description does not mention any parameter names, purposes, or usage details (e.g., what filename_a and filename_b refer to, or how subfolders work). For a tool with 4 parameters and no schema descriptions, the description must compensate, but it provides zero parameter guidance.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states that the tool quantifies change between two image passes, returning mean/max absolute difference and percentage of pixels changed. It differentiates from the sibling CompareImages by explaining that CompareImages shows what changed while this tool shows how much, and it warns about detecting unintended large changes.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly recommends pairing with compare_images and explains the complementary roles (what vs. how much). It does not provide explicit when-not-to-use scenarios, but the context is sufficiently clear for an AI agent to decide when to invoke this tool over alternatives.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

inflate_workflowA

Expand FlowZip text back into a full litegraph workflow JSON.

Reverse of the FlowZip that get_template returns. Structure (nodes, types, links, widget values) is preserved; cosmetic fields are not. To RUN it, still adapt the litegraph to API/prompt format for submit_workflow.

ParametersJSON Schema
NameRequiredDescriptionDefault
flowzipYes

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.4/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, so description carries full burden. It discloses that structure (nodes, types, links, widget values) is preserved while cosmetic fields are not, clearly detailing behavioral traits beyond schema. Minor omission: no mention of error handling or side effects.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Three concise sentences: first describes action, second specifies preservation, third gives post-processing steps. No wasted words, front-loaded.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given one parameter and an existing output schema, the description covers input, behavior, and next steps adequately. Could mention potential errors from invalid flowzip, but overall complete for the tool's complexity.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 0% schema description coverage, the description compensates by explaining that 'flowzip' is FlowZip text from get_template. It adds meaning about the parameter's origin and format beyond the schema type string.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Clearly states 'Expand FlowZip text back into a full litegraph workflow JSON' and distinguishes from siblings like get_template (which produces FlowZip) and flowzip_to_api (which converts to API format). Verb 'expand' and resource 'FlowZip to litegraph JSON' are specific.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly indicates it is the reverse of get_template and that the output must be adapted for submit_workflow, providing context on when to use. Could be more explicit about alternatives, but effectively guides the agent.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

install_modelA

Download a model from the catalog by its exact name (from search_models), into the correct models// folder, via ComfyUI-Manager.

Trusted catalog only — Manager whitelists the source. Unlike nodes, models do NOT need a ComfyUI restart (loaders re-scan the folder); once it completes, verify with list_models. Large models can take a while — the download continues server-side even if this call's poll window ends.

ParametersJSON Schema
NameRequiredDescriptionDefault
nameYes

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.4/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, yet description covers key behaviors: no restart needed, async continuation, and trust/whitelist source. Lacks specifics on error handling or permissions, but provides substantial transparency for a tool with zero annotation coverage.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Three sentences, no redundancy, front-loaded with the main action. Every sentence adds value: the how, the constraints, and important behavioral notes.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given existence of output schema (not shown), return values need not be explained. The description covers parameter source, folder destination, async behavior, and verification step. Could mention failure modes, but overall adequate for context.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Only one parameter 'name' with 0% schema description coverage. The description adds crucial semantic context: the name must be an exact catalog name from search_models. This compensates well for the bare schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action (download/install), the resource (model from catalog), and the destination (models/<type>/ folder). It distinguishes from nodes (no restart needed) and references sibling tool search_models for exact name, making intent and scope unmistakable.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly tells to use exact name from search_models and to verify with list_models after completion. Also warns about large model download times and server-side continuation. Does not explicitly say when not to use, but the context is clear enough.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

install_node_packA

Install a custom-node pack by its ComfyUI-Manager registry id (from find_missing_nodes) — trusted registry only, no arbitrary code.

Queues the install, starts the queue, and polls until done. A ComfyUI RESTART is required afterward before /object_info reflects the new nodes — call restart_comfyui, then re-query. Fails clearly if Manager's security level blocks API installs.

ParametersJSON Schema
NameRequiredDescriptionDefault
pack_idYes
versionNolatest

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.3/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description fully discloses the behavior: queues, starts, polls, requires restart, and fails on security blocks. Mentions trust and safety, providing clear expectations for the agent.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two concise sentences plus a brief note; every sentence adds value. Front-loaded with core action and key constraint, then details the process and post-condition.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Covers the full workflow: queueing, polling, restart requirement, and error handling. Output schema exists, so return value explanation is unnecessary. Complete for an agent to use correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Explains pack_id as the registry id from find_missing_nodes, but does not clarify the version parameter (its default 'latest' is only in schema). Schema coverage is 0%, so description partially compensates but leaves a gap.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Clearly states the tool installs a custom-node pack using its ComfyUI-Manager registry id, specifying the source as 'trusted registry' and referencing find_missing_nodes for the id. Distinguishes from sibling tools like install_model and find_missing_nodes.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Indicates the tool should be used for trusted registry packs, mentions the prerequisite of obtaining the id from find_missing_nodes, and advises a subsequent restart via restart_comfyui. Does not explicitly state when not to use, but the context implies avoidance for arbitrary code.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

interruptA

Cancel the currently executing prompt.

ParametersJSON Schema
NameRequiredDescriptionDefault

No parameters

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4/5.0
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided; the description lacks any behavioral details beyond the action itself, such as side effects, reversibility, or state requirements.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, concise sentence that front-loads the essential information with no unnecessary words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has no parameters and a straightforward purpose, the description is mostly complete. However, it could mention expected state or result beyond the action.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

No parameters exist (schema coverage 100%), so the description does not need to add parameter information. Baseline score of 4 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool cancels the currently executing prompt, specifying the action and target. It distinguishes from sibling tools like 'submit_workflow' or 'loop_start'.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies using the tool to stop execution, but does not explicitly state when not to use it or provide alternatives. Context from siblings suggests a clear use case.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

list_modelsA

List the real model files a loader offers (loop step: never hallucinate a checkpoint/LoRA/VAE filename).

Reads the loader's enum from object_info (handles both the legacy list and the newer COMBO encoding). If input_name is omitted, reports every enum-typed input on the node. Pick ONLY from the returned list.

ParametersJSON Schema
NameRequiredDescriptionDefault
class_nameYes
input_nameNo

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.2/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Despite no annotations, the description discloses how the tool works: it reads the loader's enum from object_info, handles both legacy list and COMBO encoding, and reports every enum-typed input if input_name is omitted. This provides good transparency, though it could mention the output format (which is covered by output schema).

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is succinct yet informative: a single sentence for purpose, then technical details, then usage warning. Every sentence adds value without repetition. It is well-structured and easy to read.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's simplicity, the description provides sufficient context: purpose, technical behavior, parameter guidance, and a caution. An output schema exists to cover return values. It could include an example or mention of expected response, but overall it is complete enough for an agent to use correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 0% description coverage, so the description must compensate. It explains the effect of omitting input_name (reports all enum-typed inputs) and implies that class_name identifies the loader. However, it does not fully describe class_name, and the description is incomplete for the class_name parameter.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: 'List the real model files a loader offers'. It specifies the resource (model files) and action (list), and adds context about avoiding hallucination. This differentiates it from sibling tools like search_models (which searches) and install_model (which installs).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives explicit guidance: 'never hallucinate a checkpoint/LoRA/VAE filename' and 'Pick ONLY from the returned list'. It explains when input_name can be omitted to get all enum-typed inputs. However, it does not explicitly mention when not to use this tool or suggest alternatives.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

list_nodesA

Search installed nodes by keyword (loop step: discover, don't guess).

Matches the keyword against BOTH the class name and the display name, so a node found by its UI label ("Load Image") still turns up. Returns class_name -> display_name. Class names are case-sensitive and differ from display names — use the class_name in workflow JSON. Omit keyword to get the total count only (the full list is large).

ParametersJSON Schema
NameRequiredDescriptionDefault
keywordNo

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.8/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Given no annotations, the description fully discloses behavior: dual matching, case sensitivity, display name vs class name distinction, count-only mode when keyword omitted.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Concise, front-loaded with main purpose, every sentence adds value. No wasted words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given one optional parameter and an output schema, the description covers input behavior, return format, and edge cases (omitting keyword). Complete for the tool's complexity.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 0% schema coverage, the description explains the 'keyword' parameter meaning and behavior (optional, default empty, count mode). Adds significant value beyond schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Clearly states 'Search installed nodes by keyword' and distinguishes from siblings like 'get_node' and 'find_missing_nodes'. Specifies matching against class and display names, and returns a mapping.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Provides context for usage: keyword search, and omitting keyword for count. Does not explicitly list when not to use, but sibling differentiation is implied by description.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

loop_bestA

Fetch the best-so-far graph — to revert to it, or to deliver it as the final.

Use this after a compaction, or any time you're unsure the graph in your context is still the best one. It is the source of truth; your memory is not.

ParametersJSON Schema
NameRequiredDescriptionDefault
run_idYes

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A3.6/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Describes the tool as the 'source of truth' implying authority and reliability, but does not disclose side effects or read-only nature given no annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Three sentences with no waste: purpose, when to use, and a behavioral trait. Excellent front-loading.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the existence of an output schema, the description adequately covers purpose and usage, though it could mention the return value type.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 0%, and the description adds no meaning to the `run_id` parameter beyond the schema's title 'Run Id'.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states it fetches the best-so-far graph for reverting or delivery. However, it does not differentiate from sibling loop tools like loop_finish or loop_start.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly recommends use after compaction or when unsure about the current graph's validity. Lacks a direct 'when not to use' statement.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

loop_finishA

Close the loop at the convergence checkpoint — you can't name a defect anymore.

Marks the run converged and returns the final ledger + the best graph, ready to present. Then STOP and ask the user to approve or request changes; don't keep inventing variations to avoid stopping.

ParametersJSON Schema
NameRequiredDescriptionDefault
run_idYes
summaryNo

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.3/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description fully discloses behavior: it closes the loop, marks convergence, returns final ledger and best graph, and instructs the agent to stop. No contradictory or missing behavioral aspects are present.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is two sentences, front-loads the main action, and contains no extraneous words. Every sentence is meaningful and earns its place.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the presence of an output schema, the description need not explain return values. It covers purpose, guidelines, and behavior well. However, the lack of parameter documentation is a gap, slightly reducing completeness.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, and the description does not mention the parameters 'run_id' or 'summary'. It fails to add meaning beyond the input schema, which is critical given the low coverage. The agent must guess the purpose of these parameters.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'close the loop' and the resource 'convergence checkpoint', and explains that it marks the run as converged and returns the final ledger and best graph. This distinguishes it from sibling tools like loop_start and loop_record, which are for earlier stages.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicit usage guidance is provided: after convergence, stop and ask for user approval. It warns against continuing to invent variations, which is a clear when-not-to-use instruction.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

loop_ledgerA

The append-only loop log: every pass, what changed, what it did.

Read it after a context compaction to recover the thread — what the brief was, what's already been tried (so you don't retry a dead end), and which pass is best. This is also the log you hand the user at sign-off; it's the story of how the result got good.

ParametersJSON Schema
NameRequiredDescriptionDefault
run_idYes

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A3.9/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden. It describes the tool as read-only ('append-only', 'read it') and discloses the content: what changed, what it did. It also explains behavioral context (recover thread, avoid retries, best pass). This provides sufficient transparency for an agent.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise (three sentences) and front-loaded with the core purpose. Each sentence adds value: stating it is append-only, describing its contents, and listing use cases. There is no wasted text, though the parameter is entirely unaddressed.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's simplicity (one required parameter) and the presence of an output schema (documenting return values), the description adequately covers purpose and usage context. However, the lack of parameter explanation is a notable gap. The description would be complete if it briefly mentioned that run_id identifies the loop session.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The only parameter, run_id, has no schema description (0% coverage) and the tool description does not explain what run_id represents or how to obtain it. The description focuses on the tool's output and usage context, not the input parameter. This leaves the agent without guidance on what value to provide.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool is an append-only loop log that records each pass, what changed, and what it did. It specifies the purpose: read after context compaction to recover thread, avoid retrying dead ends, determine best pass, and provide user sign-off. This distinguishes it from sibling tools like loop_record (which likely records) and loop_report (which likely summarizes).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly states when to use the tool: 'Read it after a context compaction to recover the thread' and 'hand to user at sign-off'. It implies it is for reading only, but does not explicitly mention when not to use it or alternatives. The purpose is clear enough that usage context is well-understood.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

loop_recordA

Record a pass and apply the ratchet (loop step 5: DECIDE).

change the ONE thing you changed this pass ("denoise 0.6 -> 0.45"). outcome your verdict vs the best-so-far: "better" | "worse" | "same". graph the API graph you just ran — REQUIRED when outcome is "better", because that's what gets stored as the new best and handed back on a revert. score an objective score from measure_image, when the brief has a gate. If both this pass and the best have one, the NUMBER decides — not your verdict. (A model that wants to be finished will call a regression "better".) outputs this pass's output files, straight from get_result — pass them through so loop_report can show what each pass actually looked like.

On "worse"/"same" you get the best graph back: revert to it and try a DIFFERENT change. Never build on a regression — that's how a loop wanders instead of converging.

ParametersJSON Schema
NameRequiredDescriptionDefault
noteNo
graphNo
scoreNo
changeYes
run_idYes
outcomeYes
outputsNo

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.6/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description must disclose behavioral traits. It explains the revert behavior on 'worse'/'same,' the requirement for graph with 'better,' and the role of score. It also mentions passing outputs for loop_report. However, it does not explicitly describe side effects or error handling, but the key behaviors are covered.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is somewhat lengthy but well-structured, with bullet points for parameters and clear explanations. It front-loads the purpose. Minor redundancy (e.g., 'Never build on a regression' is reiterated) could be trimmed, but overall it is efficient.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the complexity of the tool (7 parameters, loop context) and the presence of an output schema, the description covers the essential aspects: input parameter behavior, decision logic, and the revert mechanism. It does not detail return format, but the output schema likely handles that. The description is sufficient for an agent to use the tool correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must add meaning for each parameter. It explains 'change' as the modification made, 'outcome' as verdict vs best-so-far, 'graph' as required when outcome is 'better,' 'score' as an objective measure for gates, 'outputs' as files for loop_report, and 'note' and 'run_id' implicitly. This provides significant value beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: 'Record a pass and apply the ratchet (loop step 5: DECIDE).' It specifies the verb 'Record a pass and apply the ratchet' and the resource 'loop step 5.' The purpose is distinct from sibling tools like loop_start, loop_best, loop_finish, etc.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides explicit guidance on when and how to use the tool. It explains that on 'worse' or 'same' outcomes, the best graph is returned and a different change should be tried. It also notes that graph is required when outcome is 'better,' and explains the role of score in decision-making. This distinguishes usage from alternatives.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

loop_reportA

Render the whole run as ONE self-contained HTML page — every pass, what changed, what was kept, what was reverted, and the final.

This is the artifact worth keeping. The final image alone proves nothing; the evidence of convergence — the passes you threw away — is what shows the loop actually worked. Hand it over at the sign-off checkpoint alongside the result.

Images are downscaled and base64-inlined, so the page renders with ComfyUI off, on someone else's machine, or emailed. Writes next to the run state by default; set out_path to put it anywhere.

ParametersJSON Schema
NameRequiredDescriptionDefault
run_idYes
out_pathNo

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.2/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description solely discloses key behaviors: images are downscaled and base64-inlined, the page can render offline or via email, and output is written next to the run state by default with optional out_path. This covers important traits beyond the schema, though permissions or performance are not addressed.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise and well-structured: it starts with the primary purpose, explains why this artifact is important, then provides technical details about image handling and output location. Every sentence adds value without being verbose.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given that an output schema exists (though not shown), the description need not explain return values. It covers the tool's purpose, usage, output format, and file location. However, it does not indicate whether the result is a success message or status, which might be useful.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The schema has 0% description coverage, but the description explains that out_path can be set to place the report anywhere, adding meaning beyond the schema's default string type. The run_id parameter is implied by context (the run to report), but no explicit description is given. This is adequate but not rich.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool renders the entire run as a self-contained HTML page, detailing what changed, was kept, reverted, and final. This is specific to generating a final report, distinguishing it from siblings like loop_best or loop_record which handle other aspects of the loop workflow.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides clear context for when to use the tool: at the sign-off checkpoint alongside the result, emphasizing the artifact's value as evidence of convergence. However, it does not explicitly state when not to use it or reference alternative tools, though the purpose is sufficiently distinct.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

loop_startA

Open a loop run — do this BEFORE the first submit (loop step 0).

brief is what "right" means, in the user's words; you'll be judged against it. gate is the objective test IF the brief has one ("must tile seamlessly", "exactly 3 apples", "identity preserved") — leave empty for purely aesthetic work.

Returns a run_id. Pass it to loop_record every pass. This is what makes the ratchet real: your best graph is stored HERE, not in your context, so it survives compaction and can actually be reverted to.

ParametersJSON Schema
NameRequiredDescriptionDefault
gateNo
briefYes

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.4/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, but description covers key behavioral traits: returns run_id, stores best graph externally for persistence across compaction, enables reversion. Does not mention authorization or rate limits, but adequate for a start tool.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Three paragraphs with clear structure: imperative instruction, parameter explanations, return value and significance. Concise but could be slightly tighter; no wasted sentences.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Fully covers purpose, usage timing, parameter semantics, return value (run_id), and behavioral significance. Output schema exists but description adds value beyond it. Complete for a start tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema has 2 params with 0% description coverage, but description adds substantive meaning: 'brief is what right means' and 'gate is the objective test'. Compensates for lack of schema-level descriptions.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Clearly states it opens a loop run, with specific verb+resource ('Open a loop run'). Distinguishes from sibling tools like loop_record, loop_best, etc. by explaining this is step 0.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicit timing instruction: 'do this BEFORE the first submit'. Explains when to use 'gate' (if brief has objective test) vs leave empty. Does not explicitly mention when not to use, but context of siblings provides differentiation.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

measure_imageA

Score an output objectively, for the ratchet (metric: sharpness | tile_seam | brightness).

Use ONLY where the brief has an objective test — then feed the score to loop_record so the ratchet can't be fooled by a model that wants to be done:

tile_seam "seamless texture" — compares the wrap-around join to an interior join. ~1.0 = genuinely tiles; >2 = a real seam. The eye waves this through. sharpness "upscale/restore, add detail" — edge energy. Rises with real detail, falls when a pass just softened the image. Compare ACROSS passes. brightness mean / stddev / p99 — exposure and blown-highlight checks.

A score is not the judgement. A graph with a great number can still look wrong — gate on the metric, decide with your eyes.

ParametersJSON Schema
NameRequiredDescriptionDefault
metricNosharpness
filenameYes
subfolderNo

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.2/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

The description explains what each metric measures (e.g., tile_seam compares wrap-around join to interior join). However, it does not explicitly state if the tool is read-only or if it requires specific permissions, though this is implied by its measurement nature.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is relatively concise but uses line breaks and dashes that may not render well in all contexts. It is front-loaded with the main purpose, and each sentence adds value.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the existence of an output schema (not described) and no annotations, the description covers the main use case well. However, it does not mention the return type or output schema, and lacks explanation of 'objective test'.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 0% schema description coverage, the description only adds context for the metric parameter by listing values and meanings. It does not explain the filename or subfolder parameters, leaving them solely to the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: 'Score an output objectively' for specific metrics (sharpness, tile_seam, brightness). It distinguishes itself from siblings by focusing on objective measurement for the ratchet system.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly states when to use: 'Use ONLY where the brief has an objective test' and advises feeding scores to loop_record. Also warns that 'A score is not the judgement' and to use eyes, providing clear context and exclusions.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

restart_comfyuiA

Restart ComfyUI (via ComfyUI-Manager) so newly installed nodes register in /object_info. The server is briefly unavailable; poll check_comfyui after.

ParametersJSON Schema
NameRequiredDescriptionDefault

No parameters

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.4/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, so description carries full burden. Discloses that server is briefly unavailable and recommends polling check_comfyui. Adequately transparent for a restart operation.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two sentences, front-loaded with purpose and context, no wasted words. Efficient and clear.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no parameters and existing output schema, description covers why, side effect, and follow-up. Could mention output schema content but not required.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Input schema has zero parameters, baseline is 4. No additional parameter info needed, description handles purpose and behavior.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Clearly states 'Restart ComfyUI', a specific verb+resource, and explains the purpose: to register newly installed nodes in /object_info. Differentiates from siblings like check_comfyui and install_node_pack.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Implies usage after installing nodes to register them, and explicitly tells agent to poll check_comfyui after restart. No explicit when-not-to-use, but context is clear.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

run_templateA

Run a known-good template with input overrides — WITHOUT loading the graph into context. Fetches the template, converts to API format, applies overrides, and submits. Use template_slots first to see what you can override.

overrides: {node_id: {input_name: value}} (node ids and inputs from template_slots). After it runs, call get_result then get_image and LOOK — a green run is valid, not correct.

Limitation: subgraph templates can't be expanded (converter coverage ~88% of non-subgraph nodes); if nodes are skipped it's reported and the run may be incomplete. Confirm the template's nodes/models exist first (find_missing_nodes).

ParametersJSON Schema
NameRequiredDescriptionDefault
nameYes
packNo
sourceNoonline
client_idNocomfy-mcp
overridesNo

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.3/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, so the description carries full burden. It details the internal steps (fetch, convert, apply overrides, submit), discloses the converter coverage (~88%) and that skipped nodes are reported. It does not explicitly state whether the operation is read-only or modifies state, but the context implies it executes a run (non-destructive). Overall, good behavioral disclosure beyond the missing annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is relatively concise and well-structured: purpose, usage, overrides format, post-run steps, and limitations. Minor informal phrasing ('LOOK') but adds clarity. Could be slightly tighter, but effectively communicates essential information without verbosity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the presence of an output schema (context signal), the description does not need to detail return values. It provides sufficient context: prerequisites (template_slots, find_missing_nodes), the process, limitations (subgraph, converter coverage), and post-run actions. Lacks explanation of 'pack' and 'source' but defaults are provided. Reasonably complete for a complex tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must compensate. It explains the 'overrides' parameter in detail (format: {node_id: {input_name: value}} and source from template_slots). However, it does not explain 'pack', 'source', or 'client_id' beyond default values. While overrides is the most complex parameter, the lack of explanation for others reduces the score.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly specifies the action ('Run a known-good template with input overrides') and resource ('template'), distinguishing it from siblings like 'submit_workflow' and 'get_template'. It emphasizes the key differentiator: 'WITHOUT loading the graph into context.'

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly instructs to use 'template_slots' first for overrides, and after execution to call 'get_result' then 'get_image' (with a caveat about interpreting results). Also recommends confirming node/model existence with 'find_missing_nodes', and notes the limitation with subgraph templates. Provides clear when-to-use and when-not-to-use guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

save_workflowA

Convert an API graph to UI/litegraph format so a human can open and edit it.

The loop builds API format because that's what /prompt runs — it is NOT the file you drag onto the ComfyUI canvas. Call this when the user asks for the editable workflow.

The result is VERIFIED by converting it back to API format and diffing against what you passed in; any mismatch is reported. widgets_values is positional and a silent off-by-one shifts parameters — a plausible-but-wrong file is worse than none, so if the round-trip doesn't match, fix it before shipping it.

With save=True and a name, it's written to ComfyUI's workflows dir so it shows up in the UI's workflow list.

ParametersJSON Schema
NameRequiredDescriptionDefault
nameNo
saveNo
workflowYes

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.9/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, so description carries full burden. It discloses verification via round-trip diffing, warns about silent off-by-one in widgets_values, and explains that mismatches are reported and should be fixed. Also describes save behavior comprehensively.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise (about 90 words) yet thorough. Each sentence adds value, front-loading the primary purpose and then covering verification, warnings, and save behavior without redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the complexity and the presence of an output schema, the description covers all necessary behavioral details: purpose, when to call, verification mechanism, edge case warnings, and persistence. No gaps remain.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 0%, but the description adds meaning: workflow is the API graph, name and save control persisting the file. It explains the role of each parameter beyond the schema, compensating for the lack of schema descriptions.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: 'Convert an API graph to UI/litegraph format so a human can open and edit it.' It specifies the verb 'convert' and resource, and distinguishes from sibling tools by noting that the loop builds API format and this tool is for the editable format.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly says 'Call this when the user asks for the editable workflow.' It also implies when not to use it (the loop builds API format) and explains the save behavior. Additionally, it provides guidance on handling widgets_values positional off-by-one errors.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

search_modelsA

Search the downloadable model catalog — find checkpoints/LoRAs/VAEs/ controlnets/upscalers you may NOT have installed yet (the local equivalent of the cloud's model search). Reads ComfyUI-Manager's model list; each result shows whether it's already installed on THIS box.

Filter by keyword (name/filename/base/description) and optional model_type (checkpoint, lora, vae, controlnet, upscale, clip, diffusion_model, ...). Install one with install_model(name). Requires ComfyUI-Manager on the host.

This is a catalog of known models; list_models shows what a specific loader currently offers on disk (ground truth). Discover here, then verify against list_models after installing.

ParametersJSON Schema
NameRequiredDescriptionDefault
keywordNo
model_typeNo

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.5/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Discloses it reads ComfyUI-Manager's model list, shows installation status, and requires the add-on; no obvious undisclosed behaviors.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Front-loaded purpose, efficient but slightly lengthy; every sentence adds value.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Covers purpose, usage, parameters, prerequisites, and sibling relationship; output schema exists but not described, acceptable.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

With 0% schema coverage, description explains keyword filters (name/filename/base/description) and model_type with examples, compensating well.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Clearly states it searches a downloadable model catalog for models not yet installed, lists specific model types (checkpoints, LoRAs, etc.), and distinguishes from list_models.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly when to use (discover models) vs list_models (verify installation), and states prerequisite (ComfyUI-Manager).

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

search_templatesA

Search known-good workflow templates to adapt (few-shot beats zero-shot).

source="online" (default): the OFFICIAL open catalog on GitHub (Comfy-Org/workflow_templates) — the same ~550-template set the Cloud MCP's search is built from. You do NOT need these installed; they're browsed straight from the repo. Matches keyword against name + title + description.

source="installed": only templates on THIS ComfyUI right now (/api/workflow_templates — every installed pack's example workflows). Smaller, but guaranteed runnable on your install without adding anything.

Then fetch one with get_template. Note an online template may reference nodes/ models you haven't installed — reconcile against object_info before running.

ParametersJSON Schema
NameRequiredDescriptionDefault
sourceNoonline
keywordNo

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.7/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries the full burden. It transparently describes that online templates may reference missing nodes/models and that installation is not required for browsing. However, it does not explicitly confirm non-destructive behavior, though implied.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is well-structured with multiple focused sentences—no wasted words. It front-loads the purpose and then details the sources. Could be slightly more compact, but still efficient.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given that an output schema exists (not shown), the description fully covers tool behavior, parameter semantics, usage guidance, and limitations. It is complete for a search tool with two simple parameters.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters5/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 0%, but the description fully compensates by explaining the 'source' parameter options (online vs installed) and their meaning, and that 'keyword' matches against name+title+description. This adds value beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description explicitly states it searches workflow templates from two distinct sources, with a clear verb ('search') and resource. It also distinguishes itself from sibling 'get_template' by positioning it as a follow-up step.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Provides explicit guidance on when to use each source: 'online' for the official catalog (browsed without installation) and 'installed' for guaranteed runnable templates. Advises to fetch with get_template and reconcile against object_info for online templates.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

submit_workflowA

Queue an API-format workflow for execution (loop step 2: RUN).

workflow is the flat API/prompt-format dict: {node_id: {class_type, inputs}}. Do NOT pass litegraph/UI format here.

On success: returns the prompt_id — then call get_result to fetch outputs and get_image to LOOK at them. Running with zero errors means the graph is VALID, not CORRECT — you still have to inspect the pixels. On failure: returns node_errors keyed by node id. That is NOT an iteration — read the error, fix that specific node, and re-submit until it executes.

ParametersJSON Schema
NameRequiredDescriptionDefault
workflowYes
client_idNocomfy-mcp

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.9/5.0
Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, so description fully compensates. Details both success (returns prompt_id) and failure (node_errors) outcomes. Explains that zero errors means graph is VALID but not CORRECT, requiring pixel inspection.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Description is front-loaded with purpose, uses bullet-like structure for failure handling. Every sentence adds value; no filler. Efficiently conveys complex information in a compact form.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Completely covers usage context within a workflow system, referencing necessary post-execution steps and sibling tools. Output schema exists, so return values need not be described. All essential behavioral aspects are addressed.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema has 0% description coverage; description adds critical meaning for 'workflow' parameter (flat API dict format). 'client_id' is not elaborated but has a default. Description greatly enhances understanding of the primary parameter.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Clearly states the tool queues an API-format workflow for execution (loop step 2: RUN). Specifies the input format as flat API/prompt-format dict, distinguishing it from litegraph/UI format. Action and resource are explicit.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Provides explicit guidance: on success call get_result/get_image, on failure read node_errors and fix specific node. Also warns against passing wrong format. Clearly differentiates from sibling tools.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

system_statsA

Report device / VRAM usage — useful when tuning resolution/batch or after an OOM.

ParametersJSON Schema
NameRequiredDescriptionDefault

No parameters

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.4/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided; description fully carries behavioral disclosure. 'Report' implies read-only, no side effects mentioned. Transparent enough for a monitoring tool.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Single sentence, front-loaded, no wasted words. Highly concise and structured.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Has output schema (unknown richness). Description covers purpose and usage scenarios completely for a simple stat reporter. Could add more detail on output format but not necessary.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

No parameters; description adds no param info beyond schema, but baseline for 0 params is 4. Schema coverage is 100%, so no gap.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Clearly states it reports device/VRAM usage, provides specific use cases (tuning resolution/batch, after OOM). Distinguishes from 30+ sibling tools as the only system stats reporter.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly mentions when to use (tuning, after OOM), giving clear context. No explicit when-not-to-use or alternatives, but context is sufficient for the tool's scope.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

template_slotsA

List a template's overridable inputs WITHOUT loading the full graph JSON.

Converts the template to API format and reports each node's literal (non-wired) inputs and current values — the curated parameter list you can change with run_template. Far smaller than the raw graph. Subgraph/unknown nodes can't be expanded and are reported (their inputs aren't overridable this way).

ParametersJSON Schema
NameRequiredDescriptionDefault
nameYes
packNo
sourceNoonline

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries full burden. It discloses conversion to API format, reports literal inputs and current values, and identifies limitations for subgraph/unknown nodes. However, it does not mention potential side effects, authentication needs, or rate limits, missing some behavioral context.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is three sentences, front-loaded with the primary purpose. Each sentence adds value: first sentence states core function, second explains process, third details boundaries. No redundancy or wasted words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

While the description explains output and limitations well, it completely omits parameter semantics. Given zero schema coverage, this omission makes the tool's input interface opaque. An output schema exists (not provided), so return values are not required, but parameter documentation is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 0% and the description fails to explain any of the three parameters ('name', 'pack', 'source'). The description focuses entirely on output behavior, leaving parameter meaning undefined. This is a critical gap for agent invocation.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description begins with a clear verb ('List') and resource ('a template's overridable inputs'), immediately stating the tool's core function. It distinguishes itself from siblings like 'get_template' by emphasizing it avoids loading full graph JSON, and explicitly links to 'run_template' for subsequent parameter changes.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly tells when to use this tool ('without loading the full graph JSON', 'far smaller than the raw graph') and when not to use it ('Subgraph/unknown nodes can't be expanded', 'their inputs aren't overridable this way'). It also names the sibling 'run_template' as the next step, providing clear contextual guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

upload_imageA

Upload a local image into ComfyUI's input/ dir so a LoadImage node can use it.

Returns the name to reference in the workflow. (Video nodes like VHS_LoadVideo* read files you place directly in ComfyUI's input/ dir instead.)

ParametersJSON Schema
NameRequiredDescriptionDefault
pathYes
overwriteNo

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A4.2/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries full burden. It reveals the upload destination and return value, but lacks details on overwrite behavior (default true) and any limitations. Still reasonably transparent for a simple file upload.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Very concise: two sentences with a parenthetical note. Front-loaded with purpose, no unnecessary words. Every sentence adds value.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given low param coverage and no output schema details, the description covers the core use case but misses parameter explanations. It is adequate but not thorough.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must explain parameters. It implies 'path' is the local file path but does not explicitly define either parameter, especially 'overwrite'. This is insufficient.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'Upload' and the resource 'local image into ComfyUI's input/ dir', and specifies the purpose: so a LoadImage node can use it. It also mentions the return value, making it distinct from sibling tools like 'get_image' or 'install_model'.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly tells when to use this tool (for LoadImage node) and when not to (for VHS_LoadVideo* nodes, which read files placed directly in the directory). This provides clear context and alternatives.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

  1. 32 tool updatesv0.2.0
    • First observedcheck_comfyui
    • First observedcompare_images
    • First observedfind_missing_nodes
    • First observedflowzip_to_api
    • First observedget_image
    • First observedget_node
    • First observedget_queue
    • First observedget_result
    • First observedget_template
    • First observedimage_diff_stats
    • First observedinflate_workflow
    • First observedinstall_model
    • First observedinstall_node_pack
    • First observedinterrupt
    • First observedlist_models
    • First observedlist_nodes
    • First observedloop_best
    • First observedloop_finish
    • First observedloop_ledger
    • First observedloop_record
    • First observedloop_report
    • First observedloop_start
    • First observedmeasure_image
    • First observedrestart_comfyui
    • First observedrun_template
    • First observedsave_workflow
    • First observedsearch_models
    • First observedsearch_templates
    • First observedsubmit_workflow
    • First observedsystem_stats
    • First observedtemplate_slots
    • First observedupload_image

TDQS

B3.4/5.0

Scored across 32 tools

Disambiguation4/5

Most tools have clearly distinct purposes, but there is minor overlap between compare_images and image_diff_stats (both compare images, though one visual and one statistical) and between get_node (no description) and other tools. Overall, agents can distinguish them.

Naming Consistency5/5

All 32 tools follow a consistent verb_noun pattern with lowercase and underscores (e.g., check_comfyui, find_missing_nodes, loop_start). No mixing of conventions.

Tool Count4/5

32 tools is on the high side, but each tool serves a specific function in the ComfyUI loop workflow, including operations, installation, looping, and evaluation. Could be slightly reduced, but still appropriate for the scope.

Completeness5/5

The tool set covers the entire loop workflow end-to-end: start, run, evaluate, compare, record, finish, plus supporting operations for node/model management and template handling. No obvious gaps for the stated purpose.

Maintenance

ActivityActive
ResponsivenessNo issues

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