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ableton-mcp

ableton-mcp

by mrinalghosh
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Local

fire_clip

Trigger playback of a specific clip in Ableton Live after user approval. Specify track and clip indices.

Instructions

Start playing a clip. ASK THE USER FIRST before calling — surprise playback is disruptive.

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": "<track>",
      "clip": "<clip>"
    },
    "name": "fire_clip"
  }
}

Input Schema

NameRequiredDescriptionDefault
trackYes
clipYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.0.0

TDQS

A4.2/5.0
Behavior4/5

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

With no annotations provided, the description carries the full burden. It warns that surprise playback is disruptive, which is a crucial behavioral trait. However, it does not disclose what happens if the clip is already playing or if parameters are invalid.

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, no unnecessary words. The purpose is front-loaded, followed by a critical usage guideline. Highly efficient.

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?

Given no annotations or output schema, the description covers the essential purpose and a key behavioral note but omits parameter details and behavior beyond the warning. Adequate for a simple trigger, but not comprehensive.

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?

The schema has 0% description coverage, and the description does not explain the meaning or required format of 'track' and 'clip' parameters. The agent must infer from parameter names alone.

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 clearly states the verb 'Start playing' and the resource 'clip', making the action unambiguous. It distinguishes this tool from siblings like 'stop_clip'.

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

Usage Guidelines5/5

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

Explicitly instructs the agent to ask the user first before calling, preventing disruptive surprise playback. This is a strong, actionable guideline.

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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