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 fully covered. The description adds nothing behavioral beyond that: no note on ordering, pagination, or how much of the TOC is returned. With annotations doing the work, the description is purely a purpose restatement.

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?

A single front-loaded sentence with no waste. It is efficient, though the brevity contributes to the missing sibling and usage context rather than being a virtue in itself.

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?

With an output schema present and full parameter coverage, the description needn't explain return values, so the remaining gap is narrower. However, in a namespace crowded with list_sections/get_sections siblings, one clarifying sentence about scope would materially help; its absence keeps this at minimum viable.

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%, and both parameters (doc_number, version) are well documented in the schema with examples. The description adds no additional parameter meaning, so the 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: retrieving the table of contents for a specification. It clearly identifies the operation, though it never distinguishes this from close siblings such as get_sections_sections_get or get_sections_batch, leaving the agent to infer the boundary between 'TOC' and 'sections'.

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?

No when-to-use guidance is provided. Nothing states when to pick this over get_sections_sections_get (full sections) or get_sections_batch, so the agent has no signal for choosing among the three related tools except a guess at naming.

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