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Premiere Pro MCP Server

Premiere Pro MCP Server

Export Sequence Clip Review Frames

export_sequence_clip_review_frames

Exports a verified still frame from each clip’s midpoint on a chosen video track in one request, providing review frames without muting tracks or changing the sequence.

Instructions

Export one file-verified still frame at the midpoint of each clip on a chosen video track in one bridge request. If Media Encoder still capture cannot restore sequence In/Out, remaining frames are not attempted and the call fails. Read-only in Premiere; it does not mute tracks or claim visual quality.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "output_dir": "<output_dir>"
    },
    "name": "export_sequence_clip_review_frames"
  }
}

Input Schema

NameRequiredDescriptionDefault
limitNoMaximum clips to sample (default: 20; maximum: 50)
output_dirYesExisting directory for clip_001.png and subsequent review frames
track_indexNoZero-based video track index (default: 0)
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 the HTTP server process when Streamable HTTP is stateless per request) and held in memory only (200 keys, 1 hour); it does not survive a restart or reconnect. Read-only invocations are never deduplicated.
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.

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. Changed1 schema field changedv1.30.0
    • changedInput schema / properties / idempotency_key / description
      Previous value: -"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."New value: +"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 the HTTP server process when Streamable HTTP is stateless per request) and held in memory only (200 keys, 1 hour); it does not survive a restart or reconnect. Read-only invocations are never deduplicated."
  2. 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"
      +}
  3. 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"
      +}
  4. Changed2 schema fields changedv1.18.6
    • addedInput schema / additionalProperties
      Added value: +false
    • 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."
  5. Addedv1.14.4

TDQS

A3.7/5.0
Behavior4/5

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

Goes well beyond the annotations by disclosing the partial-failure contract ('remaining frames are not attempted and the call fails'), which implies earlier frames in the run may already exist on disk, and by clarifying host-side behavior ('read-only in Premiere; it does not mute tracks or claim visual quality'). The phrase 'Read-only in Premiere' sits in mild tension with readOnlyHint=false, but it is scoped to the host and the tool does write PNG files, so it reads as a clarification rather than a contradiction. Rate limits and confirmation of the on-disk naming scheme are left to the schema.

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 tight sentences, front-loaded with what the tool produces before the failure condition and the read-only clarification. Every clause carries information; the final clause ('does not mute tracks or claim visual quality') is terse enough to be slightly cryptic but is not padding.

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?

Strong coverage for a complex tool: an output schema exists so return values need not be explained, and the description supplies purpose, failure semantics, and host-side side-effect scope. It stops short of explaining what the caller receives on the documented failure path (which frames, if any, were already exported), which matters given 6 parameters including an idempotency key.

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 100%, so the baseline applies. The description reinforces the semantics of track_index ('a chosen video track', midpoints per clip) but adds nothing about limit, output_dir, expected_cep_target guards, or idempotency_key behavior beyond what the schema already states at length.

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?

States a specific verb and resource ('Export one file-verified still frame') with a precise selection rule ('midpoint of each clip on a chosen video track'), which implicitly separates it from marker- and single-frame-oriented siblings such as export_sequence_review_frames or export_frame. It never names a sibling or explicitly contrasts behavior, so the differentiation must be inferred from the scope wording rather than stated.

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?

The scope sentence implies when the tool applies (per-clip coverage across one video track), and the second sentence acts as a precondition caveat: the call fails if Media Encoder still capture cannot restore sequence In/Out. There is no explicit guidance on choosing this over the other frame-export siblings, and no statement of when to avoid it beyond that one failure trigger.

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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