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

Annotations cover the safety profile (readOnlyHint, openWorldHint=false), and the description adds meaningful return-shape detail since no output schema exists: passage fields (series, episode, lesson title, hook, airDate, text, URL) and the 10-item cap. It does not discuss content dating or source coverage limits.

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 sentences, front-loaded with the what and provenance before the return details. The field enumeration in sentence two is dense but each item is useful given the absent output schema.

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 low-complexity two-parameter tool with no output schema, the description adequately covers both purpose and return contents, and annotations cover safety. Only the required `topic` parameter and any source-coverage caveats are under-explained.

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 0% schema description coverage, the description must compensate. It clarifies `limit` ('up to limit (max 10) passages'), adding a cap not present in the schema, but says nothing about the required `topic` parameter's expected form or granularity.

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: 'plain-English explanations of pDOOH' drawn from named lesson series. This clearly separates it from episode/lesson listing siblings, though it doesn't explicitly name an alternative like search_podcast.

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 purpose implies when to use it (get a concept explained), but there is no explicit when/when-not statement nor any named alternative among get_episode, list_episodes, list_lessons, or search_podcast. Usage is left to inference.

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