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

With no annotations, the description carries the full burden. It does disclose useful behavior beyond the schema: the Haven server fetches the token file from your domain and the matching condition gates the claim. However it omits auth requirements (the api_key param is only covered by schema), failure modes when the token file is missing/mismatched, and whether the state change is reversible.

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 sentence, front-loaded with the action ('Finish a listing claim') followed by the mechanism. 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 state-mutating tool with no annotations and no output schema, the description explains the verification mechanism but leaves out prerequisites, error/retry behavior, and the expected result shape. Adequate but with clear gaps.

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% and both parameters (api_key, listing_id) are documented in the schema itself. The description adds no format or meaning beyond that, so the baseline 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?

States a specific verb+resource ('Finish a listing claim') and describes the concrete mechanism (fetch token file from your domain, mark claimed). The word 'Finish' implies a sequence relative to claim_listing_start, but that sibling is never named, so differentiation is only implicit.

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?

Usage is only implied: 'Finish' suggests this is the second step after starting a claim, but the description never states the prerequisite (a started claim / published token file) or names claim_listing_start as the predecessor. No when-not guidance either.

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