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Premiere Pro MCP Server

Preview Mogrt Recipe

preview_mogrt_recipe
Read-onlyIdempotent

Preview a bounded MOGRT recipe from the title, callout, quote, social, and media-placeholder template library, validating one existing workspace output directory without contacting Adobe or writing files.

Instructions

Preview a bounded After Effects MOGRT recipe from the supported title, callout, quote, social, and media-placeholder template library. It validates one existing workspace output directory but does not contact Adobe or write any files.

Input Schema

NameRequiredDescriptionDefault
widthNoComposition width from 320 to 7680 pixels; defaults to 1920.
heightNoComposition height from 240 to 4320 pixels; defaults to 1080.
recipeNoSupported authored template recipe; defaults to lower_third.
headlineYesPrimary headline text, at most 160 characters. Required for text recipes; optional caption for media_placeholder.
subtitleNoOptional secondary lower-third text, at most 160 characters.
brand_kitNoOptional approved local brand kit. It can constrain naming, request an installed font, place a workspace-contained PNG/JPEG logo, and enforce a safe margin.
frame_rateNoComposition frame rate; defaults to 30.
text_colorNoOptional text color as #RRGGBB; defaults to #FFFFFF.
accent_colorNoOptional accent fill color as #RRGGBB; defaults to #2563EB.
template_nameYesSafe template file stem; the generated artifact is template_name.mogrt.
text_controlsNofull (default) also exposes per-text-layer Font Size, Fill Color, Stroke Color, Stroke Width, Position, Scale, Rotation, Anchor Point, and Opacity controls; text_only exposes only the text strings.
idempotency_keyNoOptional client-chosen key (1-128 chars of A-Z a-z 0-9 . _ : -) for this intended edit. Pass a fresh key per edit and reuse it only when retrying that same edit, for example after a client-side timeout. A repeat with the same tool, key and arguments is not run again: while the first call is running it fails with IDEMPOTENCY_IN_PROGRESS (poll get_last_operations); after it finished it returns the original outcome marked replayed. A definite failure with nothing applied (receipt outcome not_applied) may be retried with the same key. Reusing a key with different arguments fails with IDEMPOTENCY_KEY_REUSED. Scoped to this MCP session (the stdio server process or one HTTP session) and held in memory only (200 keys, 1 hour); it does not survive a restart or reconnect. Read-only invocations are never deduplicated.
duration_secondsNoComposition duration between 2 and 30 seconds; defaults to 5.
output_directoryYesExisting absolute output directory inside approved_workspace_path; this workflow never creates directories.
expected_cep_targetNoOptional reviewed CEP sequence/clip identity and exact tick ranges. Checked before every generated command; UXP refuses this CEP-only guard.
expected_project_pathNoOptional absolute saved-project path. Every generated CEP command refuses before its body when the active project differs or is unsaved. UXP commands refuse this CEP-only guard; local-only tools do not inspect Premiere. Omit to keep existing behavior.
placeholder_media_pathNoRequired for media_placeholder: absolute workspace-contained PNG, JPEG, MOV, or MP4 placed as the swappable Essential Graphics media slot.
approved_workspace_pathYesAbsolute operator-approved workspace root containing the saved AE project and output directory.

Output Schema

NameRequiredDescriptionDefault
okYesWhether the tool completed successfully.
dataNoTool-specific result data when ok is true; on failure, diagnostic detail when the tool provides it.
toolYesThe registered MCP tool name.
errorNoFailure detail when ok is false.
receiptNoVersioned common mutation receipt; success never implies rendered verification.
idempotencyNoPresent when idempotency_key deduplicated this call: replayed is true when the original outcome was returned instead of running again.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv1.25.0
    • addedInput schema / properties / idempotency_key
      Added value: +{
      +  "description": "Optional client-chosen key (1-128 chars of A-Z a-z 0-9 . _ : -) for this intended edit. Pass a fresh key per edit and reuse it only when retrying that same edit, for example after a client-side timeout. A repeat with the same tool, key and arguments is not run again: while the first call is running it fails with IDEMPOTENCY_IN_PROGRESS (poll get_last_operations); after it finished it returns the original outcome marked replayed. A definite failure with nothing applied (receipt outcome not_applied) may be retried with the same key. Reusing a key with different arguments fails with IDEMPOTENCY_KEY_REUSED. Scoped to this MCP session (the stdio server process or one HTTP session) and held in memory only (200 keys, 1 hour); it does not survive a restart or reconnect. Read-only invocations are never deduplicated.",
      +  "maxLength": 128,
      +  "minLength": 1,
      +  "pattern": "^[A-Za-z0-9._:-]+$",
      +  "type": "string"
      +}
    • addedOutput schema / properties / idempotency
      Added value: +{
      +  "additionalProperties": true,
      +  "description": "Present when idempotency_key deduplicated this call: replayed is true when the original outcome was returned instead of running again.",
      +  "type": "object"
      +}
  2. Changed3 schema fields changedv1.24.0
    • addedInput schema / properties / expected_cep_target
      Added value: +{
      +  "additionalProperties": false,
      +  "anyOf": [
      +    {
      +      "required": [
      +        "sequence_id"
      +      ]
      +    },
      +    {
      +      "required": [
      +        "source_item"
      +      ]
      +    }
      +  ],
      +  "description": "Optional reviewed CEP sequence/clip identity and exact tick ranges. Checked before every generated command; UXP refuses this CEP-only guard.",
      +  "properties": {
      +    "backend": {
      +      "const": "cep",
      +      "description": "Backend namespace for these IDs.",
      +      "type": "string"
      +    },
      +    "clip": {
      +      "additionalProperties": false,
      +      "description": "Optional exact reviewed timeline clip.",
      +      "properties": {
      +        "effect": {
      +          "additionalProperties": false,
      +          "description": "Reviewed effect and parameter identity checked before mutation.",
      +          "properties": {
      +            "display_name": {
      +              "description": "Optional exact host display name.",
      +              "maxLength": 512,
      +              "minLength": 1,
      +              "type": "string"
      +            },
      +            "match_name": {
      +              "description": "Effect match name from host inspection.",
      +              "maxLength": 512,
      +              "minLength": 1,
      +              "type": "string"
      +            },
      +            "parameter_index": {
      +              "description": "Inspected zero-based parameter index.",
      +              "maximum": 255,
      +              "minimum": 0,
      +              "type": "integer"
      +            },
      +            "parameter_name": {
      +              "description": "Exact inspected parameter name.",
      +              "maxLength": 512,
      +              "minLength": 1,
      +              "type": "string"
      +            }
      +          },
      +          "required": [
      +            "match_name",
      +            "parameter_index",
      +            "parameter_name"
      +          ],
      +          "type": "object"
      +        },
      +        "end_ticks": {
      +          "description": "Exact expected exclusive timeline end ticks.",
      +          "pattern": "^-?\\d{1,30}$",
      +          "type": "string"
      +        },
      +        "in_ticks": {
      +          "description": "Exact expected source In ticks.",
      +          "pattern": "^-?\\d{1,30}$",
      +          "type": "string"
      +        },
      +        "node_id": {
      +          "description": "Stable CEP node ID.",
      +          "maxLength": 512,
      +          "minLength": 1,
      +          "type": "string"
      +        },
      +        "out_ticks": {
      +          "description": "Exact expected exclusive source Out ticks.",
      +          "pattern": "^-?\\d{1,30}$",
      +          "type": "string"
      +        },
      +        "project_item_id": {
      +          "description": "Expected source project-item node ID.",
      +          "maxLength": 512,
      +          "minLength": 1,
      +          "type": "string"
      +        },
      +        "start_ticks": {
      +          "description": "Exact expected timeline start ticks.",
      +          "pattern": "^-?\\d{1,30}$",
      +          "type": "string"
      +        },
      +        "track_index": {
      +          "description": "Expected zero-based track index; identity still checked.",
      +          "maximum": 255,
      +          "minimum": 0,
      +          "type": "integer"
      +        },
      +        "track_type": {
      +          "description": "Expected media track group.",
      +          "enum": [
      +            "video",
      +            "audio"
      +          ],
      +          "type": "string"
      +        }
      +      },
      +      "required": [
      +        "node_id",
      +        "track_type",
      +        "track_index"
      +      ],
      +      "type": "object"
      +    },
      +    "project_document_id": {
      +      "description": "Exact Premiere project document ID observed during review.",
      +      "maxLength": 512,
      +      "minLength": 1,
      +      "type": "string"
      +    },
      +    "sequence_id": {
      +      "description": "Stable expected active sequence ID.",
      +      "maxLength": 512,
      +      "minLength": 1,
      +      "type": "string"
      +    },
      +    "source_item": {
      +      "additionalProperties": false,
      +      "description": "Reviewed source identity for a source-only operation.",
      +      "properties": {
      +        "media_path": {
      +          "description": "Optional exact source-media path.",
      +          "maxLength": 4096,
      +          "minLength": 1,
      +          "type": "string"
      +        },
      +        "node_id": {
      +          "description": "Exact project-item node ID.",
      +          "maxLength": 512,
      +          "minLength": 1,
      +          "type": "string"
      +        }
      +      },
      +      "required": [
      +        "node_id"
      +      ],
      +      "type": "object"
      +    }
      +  },
      +  "required": [
      +    "backend"
      +  ],
      +  "type": "object"
      +}
    • addedInput schema / properties / expected_project_path
      Added value: +{
      +  "description": "Optional absolute saved-project path. Every generated CEP command refuses before its body when the active project differs or is unsaved. UXP commands refuse this CEP-only guard; local-only tools do not inspect Premiere. Omit to keep existing behavior.",
      +  "maxLength": 4096,
      +  "minLength": 1,
      +  "type": "string"
      +}
    • addedOutput schema / properties / receipt
      Added value: +{
      +  "additionalProperties": true,
      +  "description": "Versioned common mutation receipt; success never implies rendered verification.",
      +  "type": "object"
      +}
  3. Changed3 schema fields changedv1.18.6
    • addedInput schema / properties / brand_kit / properties / font_family / description
      Added value: +"PostScript font name for the template text (for example Halogen-Bold). Use a font from Adobe Fonts: After Effects will not export a template with other fonts unattended."
    • addedInput schema / properties / brand_kit / properties / safe_margin_percent / description
      Added value: +"Title-safe margin: 2-25 (percent) or 0.02-0.25 (fraction of the frame); default 10%."
    • changedOutput schema / properties / data / description
      Previous value: -"Tool-specific result data when ok is true."New value: +"Tool-specific result data when ok is true; on failure, diagnostic detail when the tool provides it."
  4. Changed4 schema fields changedv1.18.0
    • changedInput schema / properties / headline / description
      Previous value: -"Primary lower-third text, at most 160 characters."New value: +"Primary headline text, at most 160 characters. Required for text recipes; optional caption for media_placeholder."
    • addedInput schema / properties / placeholder_media_path
      Added value: +{
      +  "description": "Required for media_placeholder: absolute workspace-contained PNG, JPEG, MOV, or MP4 placed as the swappable Essential Graphics media slot.",
      +  "type": "string"
      +}
    • changedInput schema / properties / recipe / enum
      Previous value: -[
      -  "lower_third",
      -  "title_card",
      -  "callout",
      -  "quote_card",
      -  "social_end_card"
      -]New value: +[
      +  "lower_third",
      +  "title_card",
      +  "callout",
      +  "quote_card",
      +  "social_end_card",
      +  "media_placeholder"
      +]
    • addedInput schema / properties / text_controls
      Added value: +{
      +  "description": "full (default) also exposes per-text-layer Font Size, Fill Color, Stroke Color, Stroke Width, Position, Scale, Rotation, Anchor Point, and Opacity controls; text_only exposes only the text strings.",
      +  "enum": [
      +    "full",
      +    "text_only"
      +  ],
      +  "type": "string"
      +}
  5. Addedv1.14.9

TDQS

A3.8/5.0
Behavior4/5

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

Annotations already declare readOnlyHint=true, destructiveHint=false, idempotentHint=true, and openWorldHint=false. The description adds useful behavioral context by stating it validates one existing workspace output directory and does not contact Adobe or write files, which is consistent with the 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?

The description is two tightly written sentences. It front-loads the core purpose and follows with the key behavioral constraint, with no redundant or filler language.

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 rich schema, output schema, and annotations, the description is largely complete for a preview tool. It could better orient the agent to preview-versus-create or preview-versus-batch workflows, but the critical read-only and no-write behavior is clearly stated.

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 18 parameters in detail. The description adds only limited parameter context, such as the workspace output directory and template library scope, so it does not meaningfully exceed the schema baseline.

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 a specific verb and resource: preview a bounded After Effects MOGRT recipe from a named template library. It also bounds the scope to supported template categories, but it does not explicitly distinguish this tool from siblings such as create_mogrt_recipe or preview_mogrt_batch.

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?

Usage is implied by the preview verb and by the note that it validates an existing output directory without writing files or contacting Adobe. However, the description does not explicitly say when to choose this over create_mogrt_recipe or batch preview tools.

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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