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

Goes well beyond annotations: no charge, 30-day window, application returns to its prior status and is re-checked immediately, and the 409 failure condition is spelled out. This is exactly the side-effect and failure context an agent needs for a non-read-only tool.

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 dense sentences with the eligibility condition front-loaded, followed by effect and failure mode. The parenthetical endpoint path is mildly verbose but earns its place by pinning down identifier semantics.

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?

No output schema exists, yet the description covers the post-call state (status restored, immediate re-check) and the error case, so an agent has everything needed to invoke and interpret the result.

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 baseline is 3; the description additionally ties the call to its REST equivalent (POST /v1/payer-follow-ups/{id}/applications/{application_id}/reopen), reinforcing which identifiers are required and where they come from.

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 (reopen) and resource (an application stopped with no decision), plus the exact status value 'no_decision'. This clearly separates it from the surrounding payer_follow_up_request/status/webhook siblings.

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?

Gives the precise precondition (status no_decision, within 30 days) and the refusal condition (409 when not stopped or window elapsed). It doesn't explicitly name a sibling alternative, but the use case is unambiguous and no plausible alternative exists for this action.

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