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

With no annotations, the description carries the full load. It usefully discloses that V1 merely records the application and verification arrives in V2, which sets expectations about the outcome. But it omits permissions/ownership requirements, whether the claim can be withdrawn or duplicated, and what the response contains.

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?

Three short, front-loaded sentences with no filler: the action first, then the versioned limitation, then the parameter hint. Efficient and readable, though the phrasing '认领主人的店' is slightly ambiguous.

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 on a mutation-style tool, the description does cover the key lifecycle caveat and one parameter's intent. It still leaves the claim's result, the identity requirement, and the meaning of agent_key unaddressed, so it is adequate but not complete.

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 only explains one of three parameters: evidence ('填可在店内核实的信息'). store_id is self-evident from its name, but agent_key is left entirely undefined in both the schema and the 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 states a specific verb+resource: '申请认领主人的店' (apply to claim the store), so an agent knows this creates an ownership claim rather than reading or editing a store. It does not explicitly contrast itself with siblings like publish_restaurant or update_restaurant, but the claim semantic is distinct enough to route correctly.

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 implied: use this when applying to claim a store, and the note 'V1 只登记申请，核验在 V2 上线' signals the current capability boundary. However, no alternatives are named (e.g., what to use for verifying or editing an existing store), and no prerequisite is stated beyond the implicit need to be the owner.

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