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ableton-mcp-lofifren

ableton-mcp-lofifren

by LofiFren
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Local

get_arrangement_info

Reports arrangement-view state including capabilities, song length, loop region, locators, and per-track arrangement clips.

Instructions

BETA: Report arrangement-view state — capabilities, song length, loop region, locators (cue points), and per-track arrangement clips.

The capabilities field tells you which BETA operations this Live version supports. can_duplicate_to_arrangement is the most important one — it gates add_clip_to_arrangement and bounce_session_to_arrangement.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "get_arrangement_info"
  }
}

Input Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.1.0

TDQS

A4.4/5.0
Behavior4/5

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

With no annotations, the description carries the transparency burden. It discloses that the tool reports state, mentions BETA, and details the fields. It appropriately indicates no side effects (read-only).

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?

The description is two sentences, no wasted words. It front-loads the BETA label and main list, then elaborates on the most important field. Excellent conciseness.

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?

The tool has no parameters and no output schema, but the description adequately lists return fields. It could mention the return format (JSON) but is otherwise complete for a simple state report.

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

Parameters4/5

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

There are zero parameters, baseline is 4. The description adds no parameter info because none exist, which is appropriate.

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 tool reports arrangement-view state, listing specific items like capabilities, song length, loop region, locators, and per-track arrangement clips. It uses specific verbs and distinguishes from sibling action tools like add_clip_to_arrangement.

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 implies usage by explaining it provides capabilities that gate other BETA operations. It does not explicitly list when not to use or alternatives, but the context is clear enough for a simple read 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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