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

Annotations already declare readOnly, idempotent, non-destructive, and closed-world behavior. The description adds two pieces of context not in the annotations: the catalog is 'bounded' (limited scope) and no account/auth is needed. It stops short of noting pagination or how many results come back.

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?

Two short sentences, zero filler, with the resource and its scope front-loaded and the auth note as a secondary clause.

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 two-optional-param read tool with full annotation coverage and no output schema, the description covers what the tool returns and its access constraints. The only real gap is its failure to contrast with search_sounds, which would complete the routing picture.

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 100%, so both 'q' and 'limit' are already documented with examples and a max of 12. The description adds no parameter-level meaning beyond that, so the baseline 3 applies.

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?

States a specific verb+resource ('Return curated free CC0 sample sounds') and constrains the source to the 'bounded Lots of Sounds catalog'. However, it never distinguishes itself from the sibling search_sounds, so an agent must infer the difference between browsing and searching.

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 account is required' implies a low-friction, public browsing use case, which is useful context. But it names no alternative and gives no explicit when/when-not guidance, so routing between this and search_sounds remains a guess.

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