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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety and side-effect profile is fully covered without the description. The description adds nothing behavioral beyond that — no result limits, pagination, matching semantics (prefix vs fuzzy), or empty-query behavior for a search tool.

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 the core action front-loaded and the parameter hint immediately after. Zero filler and nothing that could be cut without losing 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?

There is no output schema, so the description should arguably say more about what a search returns and how results are bounded (count, ordering, pagination). It covers the input side adequately but leaves the retrieval contract implicit for a tool whose whole purpose is result discovery.

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?

The schema is nominally 100% covered but only says 'Optional query parameters' over a free-form object with additionalProperties, so it does not enumerate admissible keys. The description compensates by naming the actual keys (q, category, id), which is the single most useful piece of information for invoking this tool correctly.

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 and resource ('Search public AffixIO tools') and names the searchable fields (name, category, summary), so the agent knows exactly what the tool returns semantically. It stops short of differentiating itself from the closely named siblings tools_catalogue and tools_detail, which share the same subject matter.

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 guidance on when to reach for this tool versus tools_catalogue or tools_detail, both of which are adjacent siblings in the list. The agent is left to infer that 'search' implies a query-driven retrieval, but there is no explicit trigger or exclusion condition.

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