lastfm_get_similar_tracks

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

Annotations already provide readOnlyHint, openWorldHint, idempotentHint, and destructiveHint, which cover safety and side-effect behavior. The description adds no additional behavioral context (e.g., rate limiting, pagination, or output structure). With rich annotations, a neutral score is appropriate.

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 of 9 words, front-loaded with purpose, and contains no redundant information. It is efficiently concise for a straightforward tool.

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 simple tool with good annotations and an output schema present, the description is minimally adequate. However, it does not mention that the output is a list of tracks or any similarity threshold, leaving some gaps that the output schema may fill.

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 input schema includes descriptions for both parameters ('Track name', 'Artist name'), achieving high schema_description_coverage. The tool-level description does not add any extra meaning beyond the schema. Baseline of 3 is correct.

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 'Get tracks similar to the specified track' clearly specifies the verb 'Get' and resource 'tracks similar to a track', which is distinct from sibling tools like 'lastfm_get_similar_artists'. It matches the title and is unambiguous.

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 explicit guidelines on when to use this tool versus alternatives like 'search_track' or 'get_track_info'. The description implies usage via the verb 'Get', but does not state prerequisites or when not to use. Annotations indicate it is a safe read operation, but this is not leveraged for guidance.

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