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

With no annotations, the description carries the full burden. It usefully discloses the return shape (pages and API endpoints ranked by relevance, with context snippets), but says nothing about result limits, pagination, authentication, or rate limits for a tool whose schema defines a max of 50 results.

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 tightly written sentences: the first front-loads the action and scope, the second describes the return. No filler or redundancy.

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 search tool with no output schema, the description explains what is returned (ranked pages/endpoints with snippets), which is the key missing structured info. Minor gaps around pagination and default limits remain undocumented anywhere.

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 parameters are already fully documented in the schema. The description adds only the loose phrasing 'by keyword or phrase,' which maps to the query parameter and offers no syntax or format detail beyond the schema.

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 (Search) and resource (Claude documentation) and clarifies scope by noting the guides and API reference are searched together. It does not explicitly distinguish itself from siblings like get_doc or get_api_endpoint, so an agent must infer this is the exploratory entry point versus their direct-fetch behavior.

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 word 'Search' and the mention of keyword/phrase input imply use when the exact document is unknown, contrasting implicitly with the get_* siblings for direct retrieval. However, no explicit when-to-use, when-not-to-use, or named alternatives are provided.

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