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

With no annotations, the description carries the full burden and does so thoroughly: it discloses that the call is asynchronous (202), returns a token and host list, requires an external action (DNS TXT or file publication), demands persistence ('leave it up'), and involves human verification via email. This is rich behavioral context well beyond a simple claim.

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 dense yet efficient: it covers the action, the response, the required follow-up steps, and the tracking path in four sentences. It is front-loaded with the core action and every sentence adds necessary information.

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 and no annotations, the description gives the agent everything needed to understand the workflow: what response to expect, how to complete verification, the human-in-the-loop delay, and how to monitor progress. No critical behavioral or procedural information is missing.

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 50%: only context has a description, while slug only has a name. The description implies slug identifies the listing being claimed, but it does not explicitly describe either parameter or their format. It provides some contextual meaning but does not fully compensate for the missing slug 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 opens with a specific verb and resource: 'claim a listing as yours'. It clearly distinguishes this from siblings like watch_listing or check_status by describing the ownership-claim action and its asynchronous verification flow.

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 explains exactly what to do after calling the tool—publish the DNS TXT record or well-known file—and explicitly routes follow-up to check_status. It also states 'there is nothing else to call', which effectively guides the agent away from unnecessary additional calls, though it does not explicitly contrast with sibling tools.

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