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

No annotations are provided, so the description carries the full burden. It usefully discloses that a one-time token is returned and the exact URL where it must be served, which is real behavioral context, but it omits auth requirements, token expiry, and behavior for already-claimed listings.

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?

A single, tightly written sentence with the action front-loaded and the return value plus serving instruction following immediately. Zero wasted words.

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 two-parameter tool with full schema coverage and no output schema, the description adequately explains the return value (one-time token) and its required use. It would be complete with a pointer to the verification step and note on token lifetime.

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 both parameters (api_key, listing_id) are already documented in the schema. The description adds no parameter-level syntax or constraints beyond that, 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?

The description states a specific verb+resource ('Start claiming an unclaimed listing for your domain') and names the scope (your domain), so the agent knows exactly what the tool does. It does not explicitly distinguish itself from the sibling claim_listing_verify, which is the natural follow-up, so it falls short of a 5.

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 gives clear context for use: an unclaimed listing that belongs to your domain, plus what to do with the result (serve the token at the well-known path). It names no alternatives and no when-not conditions (e.g., already-claimed listings), so it does not reach a 5.

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