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

Annotations already declare readOnly, idempotent, closed-world and non-destructive, so the safety profile is covered. The description adds genuinely new behavior: results are contextual snippets with titles and direct links, not full pages, and the returned path is a read-handle for a sibling tool. It stops short of describing result count limits or ranking behavior, so not a 5.

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?

Three sentences, front-loaded with purpose, then usage triggers, then the return shape and follow-up workflow. The longest sentence is the .mdx path convention, which carries real operational value rather than filler.

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?

No output schema exists, and the description compensates by describing the return shape (contextual content with titles and links). Combined with the disclosed next-step workflow, an agent has everything needed to call this and act on the result without further exploration.

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?

Single required 'query' parameter at 100% schema coverage, so the schema already carries the semantics. The description does not clarify whether the query should be keywords, a natural-language question, or a path fragment — a meaningful ambiguity for a search tool that is left unaddressed. Baseline 3 applies.

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 and resource ('Search across the Metabind knowledge base') and enumerates what is retrievable: information, code examples, API references, guides. It is clearly separable from query_docs_filesystem_metabind, which is positioned as the 'full page read' counterpart rather than another search.

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?

Gives explicit when-to-use triggers (answering questions about Metabind, finding docs, understanding features, locating implementation details) and an explicit escalation path: use query_docs_filesystem_metabind with head/cat when full page content is needed. The exact mechanics (append .mdx, example path) remove all inference.

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