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

With no annotations, the description carries the full burden and does disclose notable behavior: the card is fetched server-side, a caller cannot register a description (only a URL), and the ERC-8004 binding semantics. It does not mention auth/ownership requirements or rate limits, so it is strong but not exhaustive.

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?

Front-loads the core action, then the parameters, then the next steps. It is dense and mostly earns its length, with only minor embedded detail (the parenthetical and next-step alternatives) that could be trimmed.

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 multi-step registration tool with no annotations and no output schema, the description supplies a return summary, binding semantics, and a follow-up routing path. It is nearly complete, missing only explicit auth/permission expectations for who may register.

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%, so the description must compensate, and it does — it explains card_url accepts three card formats, and that chain_id + agent_id reference the ERC-8004 record that binds the owner. It adds real meaning beyond the bare property names, though the exact format of agent_id/chain_id values is not spelled out.

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 (register an agent) and the mechanism (by the https URL of its own card). It is clear and detailed, but it never explicitly distinguishes itself from the sibling taifoon_register, so the agent must infer the boundary between the two.

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 usage context: pass chain_id + agent_id of the ERC-8004 record to bind its owner, and outlines the next steps (mint with taifoon_assurance_call or read with taifoon_offers). It also states a constraint (only a URL, not a description, can be registered), though it doesn't state when NOT to use this tool versus taifoon_register.

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