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Ableton MCP for Live Intro

arrangement_audio_clip

Place an audio file (WAV/AIFF/FLAC/MP3) directly on an audio track's Arrangement timeline at a chosen beat, bypassing Session slots and keeping natural, unwarped playback.

Instructions

Place an audio file (absolute path, WAV/AIFF/FLAC/MP3) directly on an audio track's Arrangement timeline at time beats (bar N starts at (N-1)*4 in 4/4), without going through a Session slot. The clip is created unwarped (natural speed).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
timeYes
file_pathYes
track_indexYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.3.0

TDQS

A3.6/5.0
Behavior3/5

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

With no annotations, the description carries the full burden and does add real behavioral context: supported formats, that the clip lands 'unwarped (natural speed)', and that it bypasses Session. It omits error/validation behavior, permission needs, and what happens if the target track is not an audio track, leaving gaps for a mutation tool.

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 tight sentences with zero filler, front-loading the core action and constraints in the first sentence and the unwarped behavior in the second. Every clause earns its place.

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 3-param mutation tool with no annotations and no output schema, the description is fairly complete: it explains the placement path, time units, formats, and default warping behavior. Remaining gaps are the semantics of track_index and any failure conditions, which are minor given the rest of the coverage.

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 0%, so the description must compensate. It gives useful semantics for `time` (beats, with bar N starting at (N-1)*4 in 4/4) and `file_path` (absolute path with accepted formats), but says nothing about `track_index` — e.g. whether it is absolute or relative to a selection.

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 (place) and resource (audio file on an Arrangement timeline), with the scope clarified as bypassing the Session slot path. It is clearly distinguishable from Session-oriented siblings like create_clip and load_audio_clip, though it never names any sibling explicitly.

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

Usage Guidelines3/5

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

The phrase 'without going through a Session slot' implies the alternative path an agent would otherwise take, giving an implicit when-to-use signal. However, it does not name the competing tool (e.g. load_audio_clip) or state any exclusions, so the routing decision is left partly to inference.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.