buy_domain_crypto

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

No annotations provided, so description bears full burden. It describes the 2-step process, x402 payment, requirement for x402-compatible client with funded wallet, and that WHOIS privacy is enabled. It does not discuss failure modes or rate limits, but covers the essential behavioral aspects.

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 description is organized into clear steps and an important note. It is concise but covers necessary details. Could be slightly more streamlined, but structure aids readability.

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 tool complexity (2-step process, external HTTP call), the description provides sufficient context: prerequisites, steps, follow-up polling. It mentions outputs implicitly (order_id, pay_url) and references get_domain_status. Lacks details on output schema but functional context is adequate.

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%, so baseline is 3. The description adds context that registrant details are required because buyer becomes legal owner, but does not elaborate on individual parameters beyond schema. Score remains at baseline.

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 clearly states 'Start the purchase flow for a domain using USDC crypto payment (x402 protocol).' This specifies the verb (start purchase flow), resource (domain), and payment method, distinguishing it from sibling tools like buy_domain (likely fiat).

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 explicitly says 'Before calling this tool, you MUST first call check_domain to get the price and confirm it with the user.' It also outlines the 2-step process and follow-up with get_domain_status. It does not discuss when not to use it compared to alternatives, but provides clear prerequisites and sequence.

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