Mute

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

With no annotations, the description carries the behavioral transparency burden. It usefully discloses that muting sets volume to 0 and remembers the previous level, which explains how unmuting restores it. However, it does not mention behavior around the device parameter, current mute state, or potential side effects.

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 efficient sentence with no wasted words. The key behavioral note about remembering the previous volume level is front-loaded, though 'music stream' could be more precise.

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 no annotations and 0% param coverage, the description is too sparse for an agent to confidently invoke the tool. It omits how to specify unmute, what device does, and when this tool is appropriate versus media siblings. The presence of an output schema reduces the need to explain return values, but the missing parameter and usage context remain significant gaps.

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 description coverage is 0%, so the description must compensate but does not. The mute/unmute wording loosely implies the 'muted' boolean, but the 'device' parameter is entirely undocumented, leaving an agent without essential parameter meaning.

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 tool's action: muting or unmuting the music stream. It identifies a specific verb and resource, making it distinguishable from volume_up and volume_down siblings, though it does not name those alternatives explicitly.

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 about when to use this tool versus volume_up, volume_down, or media_control. The description simply states the action without contextual conditions or exclusions.

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