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

With no annotations, the description must carry the full behavioral burden. It does disclose pagination (30 records per page by default), that credentials come from the OpenAny gateway, and that charging/authorization are gateway-determined, which is genuinely useful. But it says nothing about whether the call is a read-only lookup's return shape, rate limits, or what happens when no identifier is supplied, leaving meaningful gaps.

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 sentences, front-loaded with the purpose, followed by pagination and then gateway/billing context. No filler or repetition.

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?

There is no output schema, yet the description never indicates what fields a guarantee record contains, and with zero required parameters it leaves ambiguous whether id, tyshxydm, or both must be supplied. Pagination and auth are covered, but the identifier-requirement gap is significant for correct invocation.

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 100%, so the baseline is 3, but the description adds meaning beyond the schema: it clarifies that id and tyshxydm are alternative identifiers rather than both required, and it supplies the page-size default (30) that the schema omits. It still doesn't clarify what happens when neither identifier is given, despite zero required parameters.

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 and resource ('Retrieve external guarantee records for an enterprise') and names the two accepted enterprise identifiers, which distinguishes it from sibling risk tools such as enterprisepledge (equity pledge) or enterprisepunishment. It does not, however, explicitly contrast itself with other yuandian enterprise-risk endpoints.

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?

The description implies usage (look up a company's external guarantees by ID or credit code) but never states when to prefer this over sibling risk endpoints, nor any prerequisites such as possessing a valid enterprise identifier before calling.

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