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

No annotations are provided, so the description carries the behavioral burden. It discloses a useful trait beyond the schema (the parent document is returned alongside the section) and implies a read-only fetch, but says nothing about invalid-id handling, truncation, or size limits for a 'full text' payload.

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, no filler. The identity/provenance statement comes first, followed by the actionable read-the-whole-section caution, which is exactly the kind of front-loading an agent needs.

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?

An output schema exists, so return values need no explanation; the tool has one required parameter whose origin is documented, and the behavioral caveat about rules and exceptions is included. Nothing essential to correct invocation is missing.

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 0% and the single parameter has no description, so the description must compensate — and it does, explaining that section_id is an instruction-section id sourced from get_toc or search_instructions. It doesn't give format details (e.g., id shape), which keeps this short of a 5.

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 (fetch) and resource (full text of one instruction section), plus what else is returned (the parent document). It also disambiguates from siblings by naming get_toc and search_instructions as the source of valid ids.

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 clear workflow guidance — obtain the id from get_toc or search_instructions, then read the whole section before acting because rules and exceptions live together. There is no explicit when-not guidance, but the usage context is unambiguous.

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