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Premiere Pro MCP Server

by leancoderkavy
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TypeScript
Hybrid

Get Value At Time

get_value_at_time
Read-onlyIdempotent

Retrieve the interpolated value of an effect property at a specific time from a clip's start. Use it to analyze or animate effect parameters in Premiere Pro.

Instructions

Get the interpolated value of an effect property at a time, in seconds from the clip's start

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
node_idYesNode ID of the clip
effect_nameYesDisplay name of the effect
time_secondsYesSeconds from the clip's start on the timeline (0 is the clip's first frame) to read the value at
property_nameYesDisplay name of the property

Output Schema

TableJSON 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.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv1.19.0
    • changedInput schema / properties / time_seconds / description
      Previous value: -"Time in seconds to query the value at"New value: +"Seconds from the clip's start on the timeline (0 is the clip's first frame) to read the value at"
  2. 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."
  3. 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"
+}
  4. Changed1 schema field changedv1.4.0
    • removedInput schema / additionalProperties
      Removed value: -false
  5. First observedv1.1.1

TDQS

B3.2/5.0
Behavior3/5

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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so safety is covered. The description adds one genuine behavioral nuance beyond them – that the value is 'interpolated' (computed at that time) rather than a stored keyframe – but says nothing about out-of-range times or edge behavior.

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?

A single tight sentence that front-loads the verb and resource and ends with the time base. Nothing is wasted, though there is little structure beyond that one clause.

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?

For a low-complexity read-only getter with a full output schema and safety annotations, the description covers purpose and behavior adequately. Its main gap is that it doesn't position the tool against its closest sibling getters.

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 all four parameters are already documented in the schema, including the 'seconds from the clip's start (0 is first frame)' time base. The description adds no syntax or format detail beyond what the schema already provides, so the baseline 3 applies.

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: 'get the interpolated value of an effect property at a time.' The 'interpolated ... at a time' phrasing distinguishes it from sibling getters like get_effect_properties and get_keyframes, though it never names those siblings explicitly.

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

Usage Guidelines2/5

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

The description gives no when-to-use, when-not-to-use, or alternative guidance. It leaves the agent to infer when this beats get_effect_properties or get_keyframes on its own.

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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