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

Annotations already declare readOnlyHint and openWorldHint, so safety is covered. The description adds meaningful behavior beyond that: only the first page (8 questions) is returned, and a product with no Q&A yields a genuine zero-result rather than an error. This pagination ceiling and error-vs-empty behavior are valuable disclosures not present in the structured fields.

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 short sentences, all front-loaded and information-dense: return shape first, then parameter, then the edge-case behavior. No filler or repetition; each sentence 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?

With an output schema present, the description need not explain return values, yet it usefully clarifies the 8-question page limit and zero-result semantics. Annotations cover the safety profile, so nothing critical for correct invocation is missing; only explicit alternative-routing guidance is absent.

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% and the schema already documents 'id' as the Home Depot product/internet id with an example. The description's restatement ('id is the numeric product/internet id') adds no format or constraint detail beyond the schema, so the baseline of 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+resource: 'the first page (8 questions) of a Home Depot product's customer questions and answers, plus the product's total Q&A count.' The scope (Q&A retrieval, page size, count) clearly differentiates it from siblings like homedepot_product or homedepot_search without needing to open any 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?

Usage is implied by the name and content (fetch a product's Q&A), and the zero-result note tells the agent what to expect when no Q&A exist. However, it never explicitly states when to use this versus alternatives such as homedepot_product or a search tool, nor any prerequisites for obtaining the id. Adequate but with clear gaps.

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