set_track_arm

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

Annotations only include destructiveHint: false. The description adds the failure condition on unarmable tracks, which is useful. However, it does not disclose the exact behavior on success (e.g., does it return anything, does it affect recording state) or whether it checks prerequisites like track existence. With minimal annotation coverage, more detail would be beneficial.

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 a single sentence of 17 words, directly stating the purpose and a key limitation. Every word is necessary, and it is front-loaded with the core action.

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?

Given the low complexity (2 params, both required) and the presence of an output schema, the description covers the main behavior and failure case. It could mention prerequisites like track existence, but for a simple toggle tool, this is largely complete.

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?

With 0% schema description coverage, the description adds some context by linking 'arm or disarm' to the arm parameter and 'track' to track_index. However, it does not explain track_index indexing (e.g., zero-based) or valid ranges, nor does it specify that arm is a boolean setting. The added value is moderate but not fully compensating for the schema gap.

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 ('arm or disarm'), the resource ('track for recording'), and includes a specific caveat about failure on group/return tracks, which distinguishes it from sibling tools like set_track_mute or set_track_solo.

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 explicitly indicates when the tool should not be used (on tracks that can't be armed, e.g., group/return tracks), providing implicit guidance compared to alternatives. It does not name specific alternatives but the caveat is sufficient for an agent to avoid misuse.

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