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

Annotations already declare readOnlyHint and idempotentHint, so safety is covered. The description adds genuinely useful context beyond the schema: the output is markdown, and it enumerates the set of valid documentation paths, which is behavioral detail the agent could not otherwise obtain.

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 sentences, zero filler, and the core action plus return format is front-loaded before the path list. Every clause earns its place.

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 one-parameter read-only tool with no output schema, the description covers the action, return format, and valid inputs, while annotations cover the safety profile. Only the invalid-path or error behavior is left unstated, a minor gap.

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 0% and the single 'path' parameter has no enum, so the description must carry the burden — and it does by listing the eight valid path values. It adds real meaning beyond the bare string type, though it does not say what happens for an invalid path.

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 ('Read one documentation page') plus the return format (markdown), which is precise. It does not explicitly contrast itself with the sibling search_docs, so an agent must infer that this is for a known path rather than discovery.

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?

Usage is only implied: the enumeration of concrete paths suggests it is for direct page retrieval, and search_docs covers discovery, but neither the when-to-use condition nor the alternative is stated. Nothing is misleading, but nothing routes the agent explicitly either.

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