play

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. 'Start playing pattern' implies an action that initiates playback, but it doesn't describe what happens (e.g., does it play from the beginning, loop, or require specific state?), potential side effects, or error conditions. This is inadequate for a tool that likely controls audio output.

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 extremely concise with just three words, front-loading the essential action. There's no wasted language or unnecessary elaboration, making it efficient for quick understanding.

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 complexity of a playback tool in a musical context with no annotations and no output schema, the description is incomplete. It doesn't explain what 'pattern' entails, how playback behaves (e.g., tempo, looping), or what the result is (e.g., audio output, status). This leaves significant gaps for an AI agent to use it correctly.

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 tool has 0 parameters, and schema description coverage is 100%, so there's no need for parameter documentation in the description. The baseline score for 0 parameters is 4, as the description doesn't need to compensate for missing parameter info, though it could theoretically mention that no parameters are required.

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 'Start playing pattern' is a tautology that essentially restates the tool name 'play' with minimal additional context. While it indicates the action (start playing) and the resource (pattern), it doesn't specify what 'pattern' refers to in this musical context or differentiate this tool from similar siblings like 'pause' or 'stop'.

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 provided on when to use this tool versus alternatives. The description doesn't mention prerequisites (e.g., whether a pattern must be loaded first), when not to use it (e.g., if already playing), or how it relates to sibling tools like 'pause', 'stop', or 'set_tempo' in a playback workflow.

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