playback_control

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

No annotations provided, and description lacks detail on side effects (e.g., does play start from current position? does stop reset?). Only mentions returning success status.

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?

Extremely concise; no wasted words. The purpose is front-loaded ('Control playback.'). However, it is very minimal and could benefit from more structure.

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 tool with one parameter, the description is adequate but misses details like what happens if called while already playing. Output schema existence is hinted but not detailed.

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 has no description and no enum constraint. The description lists allowed values ('play', 'stop', 'rewind'), adding clarity beyond the schema, but does not explain each value's effect.

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?

Clearly indicates it controls playback and lists specific actions (play, stop, rewind). Distinguishes from sibling tools, which focus on notation and editing.

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 explicit guidance on when to use this tool vs alternatives. No mention of prerequisites or context (e.g., must have a score loaded).

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