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

No annotations are provided, so the description carries the full behavioral burden. It usefully signals that this returns only the 'last' status rather than a history, implying a read-only lookup. It does not state whether it is read-only, what status values exist, or whether polling is expected, so meaningful gaps remain.

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?

Very short and front-loaded with the purpose before the Args block. The Args format lightly duplicates the schema, but nothing is wasted and the key parameter fact is included.

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 one-parameter status tool with no output schema, the description covers purpose and parameter provenance adequately. It does not describe the possible status values or return shape, which matters more here because there is no output schema to fall back on.

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 0%, so the description must compensate, and it does: it documents the single parameter's name, that it is required, and where its value comes from (an async downgraded request). That provenance is genuinely beyond what the empty schema provides.

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 ('Show the last status of an async request'), which is concrete enough to distinguish it from the many check_*/get_* siblings. However it never names or contrasts with the closest sibling, get_docuengine_request_status, so an agent gets no in-description disambiguation.

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 clause 'returned by an async downgraded request to the mcp server' implies the context in which this tool is called (after an async request has been deferred). But there is no explicit when-to-use, when-not-to-use, or alternative naming, leaving routing to inference.

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