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generate_drum_pattern

Create a drum pattern and add it to a MIDI clip in Ableton Live. Specify the track, clip, style (basic, house, hiphop, dnb, random) and length in beats.

Instructions

Generate a drum pattern and add it to a clip.

Parameters:

  • track_index: The index of the track (should be a drum track)

  • clip_index: The index of the clip slot

  • style: Pattern style (basic, house, hiphop, dnb, random)

  • length: Pattern length in beats

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
styleNobasic
lengthNo
clip_indexYes
track_indexYes
Behavior2/5

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

With no annotations provided, the description bears full responsibility for behavioral disclosure. It says 'add it to a clip' but does not clarify whether the generated pattern overwrites existing notes, appends to them, or how the 'random' style behaves. The drum-track constraint is useful but incomplete.

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 compact: one sentence for the action and a concise parameter list. Every line adds necessary information, and there is no redundancy or filler.

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?

The description covers the main purpose and all parameters, but given the absence of annotations and output schema, it lacks important behavioral details such as whether the generated pattern replaces existing clip content. Overall, it is adequate for a simple tool but leaves gaps for a complex generative operation.

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?

The schema has 0% parameter description coverage, so the description compensates by explaining each parameter's meaning, including enum values for style and the unit for length. However, the style values (basic, house, etc.) are not further elaborated, leaving some ambiguity.

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 states 'Generate a drum pattern and add it to a clip' with a specific verb and resource, clearly distinguishing it from sibling tools like generate_bassline or add_notes_to_clip. The main action is unambiguous.

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 note 'should be a drum track' gives a prerequisite, but there is no explicit guidance on when to use this tool versus alternatives such as generate_bassline or add_notes_to_clip. The intended context is implied by the tool's name rather than explicitly stated.

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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