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

No annotations are provided, so the description carries the behavioral burden. It discloses that the samples are CC0 licensed, curated, and require no API key, which is valuable context beyond what the schema shows. It does not detail output format or pagination, but for a simple browse tool the key behavioral traits are covered.

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 with no filler. The core behavior, licensing, auth requirement, and usage context are all front-loaded and every sentence contributes meaning.

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-parameter browse tool with no output schema, the description covers the key facts an agent needs: what it returns, the license, and that no key is required. It could mention that results are a list of samples, but the title and verb 'browse' make that reasonably inferable.

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 coverage is 100%, so the parameters are already documented: q is an optional natural-language search and limit has a max of 12. The description adds 'curated' but does not provide additional meaning about either parameter beyond the schema, matching the baseline for high schema coverage.

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 ('Return') and resource ('curated free CC0 sample sounds'), making it clear this is a read-only listing tool. The title and description together distinguish it from siblings like download_sound and get_sound, which imply retrieving individual sounds rather than browsing a set.

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 gives clear context: use this to demo the catalog before a Pro key is available, and it explicitly notes no API key is required. It does not explicitly contrast with search_sounds or state when to choose one over the other, but the 'demo before Pro key' framing gives a practical when-to-use signal.

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