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ableton-mind

ableton-mind

by Pantani
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TypeScript
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arrangement_add_automation_point

Insert one automation point for mixer or device parameters in the Arrangement view. Supports linear, ramp, or hold curve types.

Instructions

Add one automation point in the Arrangement view for a mixer or device parameter path. Use for incremental arrangement automation edits. NOT idempotent: repeated calls add more points; returns the written time/value/curve after the bridge accepts it.

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": {
      "track_index": "<track_index>",
      "parameter_path": "<parameter_path>",
      "time": "<time>",
      "value": "<value>"
    },
    "name": "arrangement_add_automation_point"
  }
}

Input Schema

NameRequiredDescriptionDefault
track_indexYes
parameter_pathYesmixer.volume | mixer.panning | mixer.send.<i> | device.<i>.parameter.<n>
timeYesBeats from song start.
valueYes
curve_typeNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observed

TDQS

A4/5.0
Behavior4/5

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

Discloses non-idempotence: 'NOT idempotent: repeated calls add more points.' Also mentions the return value. No annotations provided, so description carries full burden; it effectively covers key behavioral traits.

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?

Two sentences clearly front-loaded with the main purpose and key behavioral note. Every sentence adds value without redundancy.

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?

Covers purpose, idempotency, and return, but lacks details on parameter constraints (e.g., valid track_index range) and behavior when adding a point at an existing time (overwrite? merge?). No output schema to compensate, leaving some gaps.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is only 40% (parameter_path and time have descriptions). The tool description does not add any extra meaning beyond what's in the schema; it merely repeats the parameter_path format. For parameters like value and curve_type, no additional context is provided. Compensation is insufficient given low coverage.

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?

Description clearly states the action (add one automation point), the location (Arrangement view), and the target parameter type (mixer or device parameter path). It distinguishes from sibling tools by focusing on a specific automation operation.

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?

Explicitly says 'Use for incremental arrangement automation edits,' which provides clear when-to-use guidance. It does not explicitly state when not to use or list alternatives, but the context of incremental edits and the sibling list imply it's the only automation point addition tool.

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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