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create_clip

Create a new MIDI clip in a specific track and clip slot, setting its length in beats.

Instructions

Create a new MIDI clip in the specified track and clip slot.

Parameters:

  • track_index: The index of the track to create the clip in

  • clip_index: The index of the clip slot to create the clip in

  • length: The length of the clip in beats (default: 4.0)

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
track_indexYes
clip_indexYes
lengthNo
Behavior2/5

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

Without annotations, the description only states it creates a clip. It does not disclose behavior if the clip slot is occupied, whether it overwrites, or any side effects. Minimal behavioral context.

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 concise: two sentences plus parameter list. It is front-loaded with the purpose and contains no extraneous information.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no output schema and no annotations, the description is insufficient. It lacks details on return value, error conditions, and side effects. The tool has 3 parameters and requires more context.

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?

The description repeats parameter names from the schema but adds brief context (e.g., 'index of the track'). Schema coverage is 0% meaning the description adds some meaning, but not significantly beyond what the schema provides.

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?

The description clearly states the tool creates a new MIDI clip in a specified track and clip slot. It distinguishes from siblings like add_notes_to_clip, fire_clip, etc., but does not explicitly differentiate them.

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

Usage Guidelines2/5

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

No guidance is provided on when to use this tool versus alternatives. There is no mention of prerequisites (e.g., track must exist, clip slot must be empty) or when not to use it.

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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