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Premiere Pro MCP Server

Set Source In Out

set_source_in_out

Set in and out points on the clip in the Source Monitor by specifying seconds to mark the exact trim range for editing.

Instructions

Set in and/or out points on the clip currently open in the Source Monitor.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
in_secondsNoIn point in seconds (optional)
out_secondsNoOut point in seconds (optional)

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
okYesWhether the tool completed successfully.
dataNoTool-specific result data when ok is true.
toolYesThe registered MCP tool name.
errorNoFailure detail when ok is false.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed2 schema fields changedv1.14.4
    • changedInput schema / $schema
      Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
      +  "$schema": "https://json-schema.org/draft/2020-12/schema",
      +  "additionalProperties": false,
      +  "properties": {
      +    "data": {
      +      "description": "Tool-specific result data when ok is true."
      +    },
      +    "error": {
      +      "description": "Failure detail when ok is false.",
      +      "type": "string"
      +    },
      +    "ok": {
      +      "description": "Whether the tool completed successfully.",
      +      "type": "boolean"
      +    },
      +    "tool": {
      +      "description": "The registered MCP tool name.",
      +      "minLength": 1,
      +      "type": "string"
      +    }
      +  },
      +  "required": [
      +    "ok",
      +    "tool"
      +  ],
      +  "type": "object"
      +}
  2. Changed1 schema field changedv1.4.0
    • removedInput schema / additionalProperties
      Removed value: -false
  3. First observedv1.1.1

TDQS

A4/5.0
Behavior3/5

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

Annotations are all false hints and provide no behavioral detail, so the description carries the burden of indicating mutation. It does clarify that this is a state-changing operation on the Source Monitor clip and that one or both points may be set via 'and/or'. It does not disclose behavior when no clip is open or whether unspecified points are preserved, but for a simple setter this is a moderate gap.

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 with the action and target, with no filler or redundant restating of the title. Every word contributes to the meaning.

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 simple two-parameter setter with fully documented inputs and an output schema, the description is largely sufficient. The only meaningful omission is edge-case behavior such as what happens when no clip is open in the Source Monitor.

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%, with both in_seconds and out_seconds having descriptions and optionality already specified. The description adds minimal semantic value with 'and/or', but the schema already handles the parameter meaning.

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 names a concrete action ('set') and a specific resource ('in/out points on the clip currently open in the Source Monitor'). It clearly distinguishes this from sequence-level in/out tools like set_sequence_in_out_points and project-item in/out tools like set_item_in_out.

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 a clear context and prerequisite: the target is the clip open in the Source Monitor, not the timeline or a project item. It does not explicitly name alternatives or exclusions, but the intended use case is unambiguous given the Source Monitor qualifier.

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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