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

With no annotations, the description carries the full burden and does it well: it discloses that the call creates a real obligation, requires explicit authorization, and that the caller never negotiates, never pays, and never substitutes a different item. This goes well beyond the schema and alerts the agent to the side effects.

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 sentences, front-loaded with the core purpose, and each sentence adds value — operation, prerequisites/constraints, and the follow-up purchase tool. No filler or repetition of schema details.

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?

Given no output schema, the description explains the return in practical terms ('Get a free price' and 'Purchase the returned quote'). It covers the key safety context, though it doesn't describe the exact quote response shape or mention all required inputs like postal_code; the rich input schema covers most of that.

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 77%, so the schema already documents most parameters. The description adds plain-language meaning for the action enum and groups required fields, but it doesn't explain postal_code or quantity, and the max_price explanation largely restates the schema's 'ceiling in cents' description.

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?

The description names a specific operation — get a free price to arrange something at a US local business — and enumerates the four actions (book, hold, request_quote, cancel). It points to purchase_real_world_answer as the follow-up, but it never mentions the near-identically named sibling quote_real_world_answer, so full sibling disambiguation is missing.

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?

It clearly frames this as the quoting step and instructs the caller to purchase the returned quote with purchase_real_world_answer. It also signals that explicit authorization and a max price are prerequisites, but it doesn't state exclusions or compare with get_verification_result/status or quote_real_world_answer.

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