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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so the safety profile is covered. The description adds the classification severity meaning (I=most severe), but does not disclose result ordering, pagination/limit behavior, or data freshness beyond the schema.

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 compact sentences, front-loaded with the resource identity followed by filters and use cases. No padding, though the use-case clause is somewhat generic.

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?

A read-only, filter-based search over FDA data with full schema coverage and rich annotations; no output schema is needed since return values are self-evident. The only gap is disambiguation from sibling recall tools, which is a routing rather than completeness issue.

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 the baseline is 3. The description only restates the filter dimensions (product name, classification, state, date range) already documented in the schema, including the severity semantics for classification that the schema also provides.

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: 'FDA drug enforcement actions (recalls)'. The 'drug' qualifier implicitly distinguishes it from fda_device_recalls and fda_food_recalls, but the description never names those siblings or clarifies the boundary against recall_screen / product_liability_screen.

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?

Lists use cases ('pharmacy compliance, supply chain monitoring, pharmacovigilance'), which implies when it is relevant, but gives no when-not guidance and no routing to the many sibling recall tools (fda_device_recalls, fda_food_recalls, cpsc_recall_search).

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