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

Adds behavior beyond the readOnly/openWorld annotations: crawl cap of 50 pages, a 7-day index lifetime, index reuse for repeat questions, and citation of source pages. It does not state failure modes (e.g., unreachable site) or latency, but the operational traits disclosed are substantial.

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?

The opening sentence is well front-loaded and dense, but the pricing is stated three times with inconsistent framing ('$0.03, or $0.05 above 25 pages. Costs $0.05 USDC per call (x402)'), which is redundant and slightly confusing. Redundancy costs it clarity.

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 crawl-and-answer tool with no output schema, the description covers cost, scope, indexing, reuse, and citation, which is enough to invoke it correctly. Minor gaps remain around error handling and what 'cites the pages' looks like structurally.

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 75% and the schema already documents site, refresh, and max_pages (including the 1-50/default 25 range). The description adds the 50-page ceiling context and the 7-day reuse window, but 'question' remains undocumented in both places. Baseline 3 is appropriate given the schema does most of the work.

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 (ask a question) and resource (any website or documentation), and describes the mechanism (crawl, index, search, cite). It does not explicitly differentiate itself from close siblings like 'ask', 'answer', 'video_ask', or 'vision_ask', leaving the agent to infer this is the docs/site-specific variant.

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?

The description implies when to use it (when you have a question about a website or docs site) and notes that later questions reuse the index, which helps multi-turn usage. But it never states when NOT to use it or names alternatives despite many overlapping siblings (ask, answer, crawl, scrape), so routing between them is left to inference.

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