AnimGen

Generate animation

generate_animation

DestructiveIdempotent

Start a paid asynchronous animation. Requires a prior quote_id or an explicit max_credits limit and an idempotency key. Credits may be charged once production begins.

Input Schema

TableJSON Schema

Name	Required	Description
`request`	Yes	Exact user-approved request; keep unchanged across retries.
`quote_id`	No	Fresh approved quote. At least quote_id or max_credits is required; both are allowed.
`max_credits`	No	User-approved per-operation credit cap. Never silently increase it; this is not a multi-task budget.
`idempotency_key`	Yes	Persist per logical generation; reuse with the same OAuth client and user after a timeout.

Output Schema

TableJSON Schema

Name	Required	Description
`id`	Yes	Persist this task ID immediately after create; poll it instead of creating again.
`error`	No	Task failure details, independently of any usable outputs.
`stage`	No	Current pipeline stage when available.
`object`	Yes	Public task resource type.
`status`	Yes	succeeded, failed, and cancelled are terminal; cancelling is not terminal.
`credits`	Yes	Quoted, reserved, and charged credit states.
`outputs`	No	Available assets, including partial outputs on failed/cancelled tasks. Always inspect them at a terminal state.
`metadata`	No	Caller-provided metadata.
`progress`	Yes	Fraction from 0 to 1, not a completion-time estimate.
`created_at`	Yes	UTC acceptance timestamp.
`started_at`	No	UTC production start when known.
`finished_at`	No	UTC terminal timestamp when known.
`resolved_export`	No	Persisted FPS sampling summary shared with the quote and manifest; null for legacy tasks.
`normalized_input`	No	Normalized public input; may contain private prompts or image references. Do not log wholesale.

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 5, 2026

changedInput schema / $defs / ExportOptions / properties / output_formats / items / enum

Previous value: -[
-  "clip_video",
-  "webm_alpha",
-  "prores_4444",
-  "frames_zip",
-  "spritesheet",
-  "spritesheet_json",
-  "unity_meta",
-  "unity_pack",
-  "godot_pack",
-  "unreal_paper2d_pack",
-  "cocos_creator_pack",
-  "construct3_pack"
-]New value: +[
+  "clip_video",
+  "webm_alpha",
+  "prores_4444",
+  "gif",
+  "frames_zip",
+  "spritesheet",
+  "spritesheet_json",
+  "unity_meta",
+  "unity_pack",
+  "godot_pack",
+  "unreal_paper2d_pack",
+  "cocos_creator_pack",
+  "construct3_pack"
+]

Changed1 schema field changedSep 29, 2026

changedInput schema / $defs / ExportOptions / properties / output_formats / items / enum

Previous value: -[
-  "clip_video",
-  "webm_alpha",
-  "prores_4444",
-  "frames_zip",
-  "spritesheet",
-  "spritesheet_json",
-  "unity_meta",
-  "unity_pack",
-  "godot_pack",
-  "unreal_paper2d_pack",
-  "cocos_creator_pack"
-]New value: +[
+  "clip_video",
+  "webm_alpha",
+  "prores_4444",
+  "frames_zip",
+  "spritesheet",
+  "spritesheet_json",
+  "unity_meta",
+  "unity_pack",
+  "godot_pack",
+  "unreal_paper2d_pack",
+  "cocos_creator_pack",
+  "construct3_pack"
+]

Changed19 schema fields changedSep 15, 2026

addedInput schema / $defs / AnimationCreateRequest / properties / export / default / fps
```
Added value: +null
```

addedInput schema / $defs / ExportOptions / properties / fps

Added value: +{
+  "anyOf": [
+    {
+      "exclusiveMinimum": 0,
+      "maximum": 60,
+      "type": "number"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "description": "Source-speed sampling frequency, without interpolation. Independent exports only; requires spritesheet and spritesheet_json. A short final frame preserves the selection duration.",
+  "title": "Fps",
+  "x-description-zh": "按源视频原速采样，不补帧；仅用于独立导出，需 spritesheet 和 spritesheet_json；短尾帧保留选区总时长。"
+}

addedInput schema / $defs / ExportOptions / properties / frame_count / anyOf

Added value: +[
+  {
+    "maximum": 240,
+    "minimum": 1,
+    "type": "integer"
+  },
+  {
+    "type": "null"
+  }
+]

changedInput schema / $defs / ExportOptions / properties / frame_count / default
```
Previous value: -24New value: +null
```

changedInput schema / $defs / ExportOptions / properties / frame_count / description

Previous value: -"Number of frames sampled over the selected interval, not an FPS field."New value: +"Legacy uniform frame count, mutually exclusive with fps. When both are omitted, uses 24 frames."

removedInput schema / $defs / ExportOptions / properties / frame_count / maximum
```
Removed value: -240
```
removedInput schema / $defs / ExportOptions / properties / frame_count / minimum
```
Removed value: -1
```
removedInput schema / $defs / ExportOptions / properties / frame_count / type
```
Removed value: -"integer"
```

changedInput schema / $defs / ExportOptions / properties / frame_count / x-description-zh

Previous value: -"在选段内采样的帧数，不是 FPS 参数。"New value: +"旧版等间隔帧数，与 fps 互斥；两者均省略时使用 24 帧。"

changedInput schema / $defs / ExportOptions / properties / output_formats / description

Previous value: -"Requested asset formats; defaults to spritesheet. Duplicates are removed. Metadata needs its matching texture."New value: +"Requested asset formats; defaults to spritesheet in frame_count mode, or spritesheet plus spritesheet_json in FPS mode. Duplicates are removed. Metadata needs its matching texture."

changedInput schema / $defs / ExportOptions / properties / output_formats / x-description-zh

Previous value: -"请求的资产格式；默认 spritesheet，重复项会去重，元数据需配套纹理。"New value: +"请求的资产格式；帧数模式默认 spritesheet，FPS 模式默认 spritesheet 加 spritesheet_json。重复项会去重，元数据需配套纹理。"

addedOutput schema / $defs / AssetResponse / properties / media

Added value: +{
+  "anyOf": [
+    {
+      "$ref": "#/$defs/MediaResponse"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "description": "Whitelisted measured video metadata. Unknown fields are null; non-video assets return null.",
+  "x-description-zh": "白名单内的实测视频信息，未知字段为 null；非视频资产为 null。"
+}

addedOutput schema / $defs / ExportWarning

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "code": {
+      "title": "Code",
+      "type": "string"
+    },
+    "details": {
+      "additionalProperties": true,
+      "default": {},
+      "title": "Details",
+      "type": "object"
+    },
+    "message": {
+      "title": "Message",
+      "type": "string"
+    }
+  },
+  "required": [
+    "code",
+    "message"
+  ],
+  "title": "ExportWarning",
+  "type": "object"
+}

addedOutput schema / $defs / MediaResponse

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "duration_seconds": {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "default": null,
+      "description": "Playable video duration measured from presentation timestamps; never provider-requested duration.",
+      "title": "Duration Seconds",
+      "x-description-zh": "根据呈现时间戳测得的可播放视频时长，不使用供应商请求时长。"
+    },
+    "fps": {
+      "anyOf": [
+        {
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "default": null,
+      "description": "Measured average source frame rate; use presentation timestamps for VFR selection.",
+      "title": "Fps",
+      "x-description-zh": "实测源平均帧率；可变帧率选帧仍依据呈现时间戳。"
+    },
+    "frame_count": {
+      "anyOf": [
+        {
+          "type": "integer"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "default": null,
+      "description": "Decoded source frame count, or null when unknown.",
+      "title": "Frame Count",
+      "x-description-zh": "解码源帧数，未知为 null。"
+    },
+    "height": {
+      "anyOf": [
+        {
+          "type": "integer"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "default": null,
+      "description": "Displayed video height in pixels, accounting for rotation.",
+      "title": "Height",
+      "x-description-zh": "考虑旋转后的显示高度，单位像素。"
+    },
+    "width": {
+      "anyOf": [
+        {
+          "type": "integer"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "default": null,
+      "description": "Displayed video width in pixels, accounting for rotation.",
+      "title": "Width",
+      "x-description-zh": "考虑旋转后的显示宽度，单位像素。"
+    }
+  },
+  "title": "MediaResponse",
+  "type": "object"
+}

addedOutput schema / $defs / ResolvedExport

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "duration_ms": {
+      "description": "Sum of manifest frame durations in milliseconds.",
+      "title": "Duration Ms",
+      "type": "integer",
+      "x-description-zh": "Manifest 逐帧时长的毫秒总和。"
+    },
+    "fps": {
+      "description": "Target sampling frequency; never recalculated as frame_count / duration.",
+      "title": "Fps",
+      "type": "number",
+      "x-description-zh": "目标采样频率，不按帧数除以时长重新计算。"
+    },
+    "frame_count": {
+      "description": "Number of samples strictly before the selected end.",
+      "title": "Frame Count",
+      "type": "integer",
+      "x-description-zh": "严格位于选区终点前的采样帧数。"
+    },
+    "selection": {
+      "$ref": "#/$defs/Selection",
+      "description": "Resolved source interval; full uses measured playable duration.",
+      "x-description-zh": "实际源区间，full 使用实测可播放时长。"
+    },
+    "warnings": {
+      "default": [],
+      "description": "Sampling warnings, including repeated source frames without interpolation.",
+      "items": {
+        "$ref": "#/$defs/ExportWarning"
+      },
+      "title": "Warnings",
+      "type": "array",
+      "x-description-zh": "采样警告，包含未补帧而重复采到源帧的情况。"
+    }
+  },
+  "required": [
+    "selection",
+    "fps",
+    "frame_count",
+    "duration_ms"
+  ],
+  "title": "ResolvedExport",
+  "type": "object"
+}

addedOutput schema / $defs / Selection

Added value: +{
+  "additionalProperties": false,
+  "properties": {
+    "duration_seconds": {
+      "anyOf": [
+        {
+          "exclusiveMinimum": 0,
+          "type": "number"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "default": null,
+      "description": "Required when mode=range; positive interval length in seconds.",
+      "title": "Duration Seconds",
+      "x-description-zh": "mode=range 时必填，选段时长秒数必须为正。"
+    },
+    "mode": {
+      "default": "full",
+      "description": "full uses the complete source; range requires duration_seconds.",
+      "enum": [
+        "full",
+        "range"
+      ],
+      "title": "Mode",
+      "type": "string",
+      "x-description-zh": "full 使用完整来源；range 必须提供 duration_seconds。"
+    },
+    "start_seconds": {
+      "default": 0,
+      "description": "Range start in seconds from the source beginning.",
+      "minimum": 0,
+      "title": "Start Seconds",
+      "type": "number",
+      "x-description-zh": "相对源视频起点的选段开始秒数。"
+    }
+  },
+  "title": "Selection",
+  "type": "object"
+}

addedOutput schema / $defs / TaskError / properties / details

Added value: +{
+  "additionalProperties": true,
+  "default": {},
+  "description": "Public error details, without private storage or provider values.",
+  "title": "Details",
+  "type": "object",
+  "x-description-zh": "公开错误详情，不含私有存储或供应商值。"
+}

addedOutput schema / $defs / TaskError / properties / param

Added value: +{
+  "anyOf": [
+    {
+      "type": "string"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "description": "Related public parameter when available.",
+  "title": "Param",
+  "x-description-zh": "可用时提供相关公开参数。"
+}

addedOutput schema / properties / resolved_export

Added value: +{
+  "anyOf": [
+    {
+      "$ref": "#/$defs/ResolvedExport"
+    },
+    {
+      "type": "null"
+    }
+  ],
+  "default": null,
+  "description": "Persisted FPS sampling summary shared with the quote and manifest; null for legacy tasks.",
+  "x-description-zh": "持久化的 FPS 采样摘要，与报价、Manifest 一致；历史任务为 null。"
+}

First observedSep 14, 2026

TDQS

A4/5.0

Behavior4/5

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

Annotations already declare idempotentHint=true, destructiveHint=true, and openWorldHint=true. The description adds genuine context beyond them: the operation is asynchronous, credits are charged once production begins (cost timing), and the idempotency key should be persisted per logical generation and reused after timeouts. It does not touch the destruction/cancellation path, but the cost disclosure is valuable.

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 short sentences, zero waste, and the core constraint (paid async, prerequisite, idempotency) is front-loaded. Every sentence 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?

An output schema exists, so return values need not be explained, and the description covers cost, preconditions, and retry behavior for a complex generation tool. The only gap is guidance on cancellation/cleanup of an in-flight job, which siblings handle.

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 100%, so the schema already documents all four parameters, including that quote_id and max_credits are optional-but-required-one-of and that idempotency_key must be ≥8 chars. The description restates the one-of requirement without adding format, range, or interaction detail, so baseline 3 is appropriate.

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 states a specific verb+resource ('Start a paid asynchronous animation') and flags the async and paid nature, which separates it from the read/exporter siblings. It does not explicitly name which sibling to consult first (quote_animation) or distinguish itself from quote_animation/export_animation by name, so it stops short of full sibling differentiation.

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?

It gives clear preconditions: a prior quote_id OR an explicit max_credits limit, plus an idempotency key. The mention of 'prior quote_id' implicitly routes the agent through quote_animation, but it never names that tool or states when NOT to use this one, so no explicit alternatives are given.

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

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