set_arrangement_loop

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

With no annotations, the description carries the full burden of behavioral disclosure. It does not state side effects, whether setting the loop affects playback, or any constraints (e.g., start < end). It only restates the core operation with minimal parameter details.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is concise and front-loaded, with a clear one-line purpose followed by a simple parameter list. Every sentence earns its place without unnecessary fluff.

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

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

For a simple setter with no output schema or nested objects, the description covers the core action and all parameters. However, it lacks usage context, side effects, and any relation to sibling tools, making it minimally sufficient but not rich.

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

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

The description adds meanings beyond the raw schema by explaining 'start' as loop start position in beats, 'end' as loop end position in beats, and 'enabled' as whether to enable looping. This compensates for the 0% schema description coverage, though it could include constraints like start < end.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('Set the arrangement loop region') with a specific resource. It distinguishes from sibling tools like set_clip_loop and set_clip_start_marker by specifying 'arrangement' and listing the exact parameters involved.

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

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

No guidance is given on when to use this tool versus alternatives, such as set_clip_loop or set_clip_start_marker. There are no prerequisites or exclusions mentioned. The usage context is only implied by the name and description.

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