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

Annotations already declare readOnlyHint=true, openWorldHint=true, etc. The description adds context about the database source and return format but does not mention rate limits, cost, or behavior when the optional _apiKey is used. Since annotations carry the safety profile, the description is sufficient.

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 extremely concise: two clarifying sentences plus a code example. It front-loads the purpose and includes a helpful example. No redundant or irrelevant information.

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?

The description covers the database source, search behavior, and return fields. It lacks information on pagination (e.g., offset/cursor) or sorting order, but for a simple search list tool with no output schema, this is adequate. The example provides concrete usage context.

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?

With 100% schema description coverage, the schema fully explains all three parameters. The description provides an example usage pattern but does not add new semantic meaning beyond the schema. Baseline 3 is appropriate.

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 the verb 'search' and resource 'podcasts', and specifies the search domain ('open podcast database'). It lists return fields (title, author, description, etc.), making the purpose very specific. However, it does not explicitly differentiate from sibling tools like 'get_podcast' or 'episodes', which slightly reduces clarity.

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 implies usage via the example and mentions searching by term, but does not provide guidance on when to use this tool versus alternatives (e.g., 'get_podcast' for a single result or 'episodes' for specific episodes). No exclusions or prerequisites are stated.

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