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

The annotations already declare readOnlyHint=true and openWorldHint=false, so the read-only nature is covered. The description adds that the tool returns matching skills with several fields, which is useful, but it does not disclose pagination behavior, result ordering, or other operational details beyond the annotation-covered safety profile.

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 a single sentence that front-loads the action and scope. The list of return fields adds length but is justified since there is no output schema; still, the enumeration makes it slightly less concise than it could be.

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?

Given 8 optional parameters and no output schema, the description gives a reasonable high-level picture and lists return fields, but it omits guidance on default sorting, pagination, and how to combine filters. It is adequate for a basic search call but not complete for sophisticated use.

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 only 63%, so the description should partially compensate for undocumented parameters. It does not explain sort, limit, offset, category, platform, or how filtering interacts with the search, and the return-field list only weakly hints at format and freshness as relevant dimensions.

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 a specific verb ('Search') and resource ('SkillAgent catalogue of AI agent skills, rules files and MCP servers'). It conveys the search/discovery nature of the tool, which differentiates it from the sibling tool names like get_skill and install_skill, though it does not explicitly name those alternatives.

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: use this tool when you want to search the catalogue for matching skills. However, it offers no explicit guidance about when to prefer it over get_skill, install_skill, or recommend_skills, nor does it state any exclusions or prerequisites.

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