set_loop_start

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

No annotations are provided, so the description carries full burden for behavioral disclosure. It lacks information about side effects (e.g., if loop is off), prerequisites, or whether the operation is reversible. Only the action itself is stated.

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?

A single, concise sentence that is front-loaded with the key information. No filler words or redundancy.

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 one parameter and an output schema (though not detailed), the description is minimally adequate but could mention typical range or effect on playback. It lacks depth for edge cases.

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?

Schema coverage is 0%, so description must compensate. It adds the unit 'beats' to the parameter 'start_beats', but does not explain expected range, format, or relationship to other parameters. The schema's required flag is already visible.

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 resource ('arrangement loop start position'), and the unit ('beats'). It distinguishes from siblings like 'set_loop' and 'set_clip_loop_start' by specifying 'arrangement'.

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?

The description implies usage for adjusting the arrangement loop start, but provides no explicit when-to-use or when-not-to-use guidance. No alternatives are mentioned, though the distinction from clip loop start is implicit.

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