set_mute

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

With no annotations provided, the description carries full burden. It only states the action but does not disclose behavior such as toggling vs explicit setting, whether it fails when already in the desired state, or side effects like affecting other audio streams.

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, front-loaded with the verb. It is concise but could be slightly optimized by removing the '[ACTION]' prefix which adds no informational value.

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?

The tool has one required boolean parameter and an output schema (not shown). The description is sufficient for a simple toggle, but lacks context about system dependencies or edge cases. Missing guidance on error scenarios or return values.

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 schema has one boolean parameter 'mute' with 0% description coverage. The description 'Mute or unmute' adds minimal semantic value beyond the schema, as the parameter's purpose is obvious. It does not explain the true/false mapping or provide examples.

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 'Mute or unmute the default audio sink.' It specifies the action (mute/unmute) and the resource (default audio sink), distinguishing it from sibling tools like set_volume which controls volume level, not mute state.

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 such as set_volume or media_control. There is no mention of prerequisite conditions (e.g., audio system being active) or when not to use it.

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