mixer_set_volume

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

No annotations are provided, so the description carries the full behavioral burden. It only discloses the volume range; it does not explain side effects, whether the volume change persists, how invalid tracks are handled, or whether automation is overridden. This is insufficient for a mutating tool with zero annotation support.

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, front-loaded sentence with no filler. Every word contributes either the operation, the resource, or the valid range, making it appropriately sized for a simple setter.

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, no output schema, and no parameter descriptions, this is too sparse for an autonomous agent. The only contextual addition is the volume range; track semantics, effect, and failure behavior are all missing. It barely exceeds what the tool name and schema titles already imply.

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. It adds the volume range (0.0..1.0) but does not explain the 'track' parameter at all, such as zero-based indexing, valid ranges, or how tracks are identified. The track parameter remains semantically opaque.

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 states a specific verb and resource: 'Set mixer track volume' with a clear valid range. It clearly identifies the mixer domain, distinguishing it from channel_set_volume and from other mixer track setters like mixer_set_pan or mixer_mute.

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 given about when to use this tool versus alternatives, such as channel_set_volume or mixer_set_pan. There is no mention of prerequisites, valid track indices, or contexts where this tool is the appropriate choice.

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