set_item_volume

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

Annotations only provide destructiveHint=false, and the description adds no meaningful behavioral context beyond the fact that it sets volume. It does not mention side effects, reversibility, whether the change is absolute or relative, or any permission/rate-limit considerations. The 'volume in dB' note is more parameter semantics than behavioral transparency.

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 short and front-loaded with the core purpose. The Args section is minimal but additively useful. However, it lists only one of three parameters, which is incomplete rather than concise. Still, there is no fluff and it earns a solid score for its efficient 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 mutation tool with three required parameters and no output schema, the description is too sparse. It does not explain how to obtain valid track_index or item_index values, what the volume range or meaning of dB is, or what the operational effect is on the media item. The annotations and schema provide very little, so the description carries most of the burden and falls short.

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 for all three parameters. It only documents volume_db ('Volume in dB'), leaving track_index and item_index completely unexplained. No indexing base, valid ranges, or relationship between parameters is provided, so it only partially compensates for the schema gap.

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 a specific verb and resource: 'Set the volume of a media item.' This is distinct from related tools like set_track_volume and set_send_volume, but it does not explicitly name alternatives or differentiate itself. It is unambiguous but lacks explicit sibling differentiation.

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?

The description provides no when-to-use guidance, no prerequisites, and no references to alternative tools. It does not indicate whether this should be used over set_track_volume or set_send_volume for item-level adjustments. There is no usage context beyond the bare operation.

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