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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description adds context beyond them with 'No authentication required,' a genuinely useful operational fact for callers, though it says nothing about pagination or result size for a full enumeration.

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 tight sentences with purpose, routing guidance, and the auth fact front-loaded in order of importance. No filler or repetition of the title.

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 read-only, single-optional-param listing tool whose annotations cover safety, the description is nearly sufficient. Without an output schema it could note the return shape (e.g. that results are slugs/pages), but the 'slugs' reference largely covers that, so only a small gap remains.

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 coverage is 100%, so the schema already documents the single 'product' parameter. The description's example values ('compass', 'legal', 'overview') duplicate the schema description verbatim, adding no meaning beyond it. Baseline 3 applies when the schema does the heavy lifting.

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 ('Enumerate') and resource ('all available docs pages') with scope, plus the optional product filter. It names the sibling get_doc and frames itself as the discovery step before retrieval, letting an agent distinguish it from single-doc fetch without opening either schema.

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?

Explicitly states when to use it: 'to discover what slugs exist before calling get_doc,' giving a clear dependency flow and naming the alternative. It does not address when NOT to use it or whether search_docs is a better discovery path, leaving a minor gap.

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