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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint=false, and destructiveHint=false, so the description's added content about returned fields and the non-AI nature of risk signals is valuable context. It does not cover permissions or rate limits, but with rich annotations this is a strong disclosure.

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?

The description is front-loaded with the core action and then lists returned data efficiently in one dense sentence. It is somewhat run-on due to semicolon-separated details, but nearly every phrase adds information.

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?

Because there is no output schema, the description carries the return-value burden and does well by enumerating the application fields and explaining risk-signal semantics. The main gap is that it never explains the required applicant_id parameter.

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?

The single parameter applicant_id has 0% schema description coverage, and the description never mentions the parameter, its expected format, or where to obtain an applicant ID. The schema only says integer minimum 1, so the description does little to compensate for the low coverage.

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 uses a specific read verb and resource and enumerates exactly what the single application record contains: links, cover letter, answers, screening match score, provenance checks, notes, history, and résumé download. It is easy to distinguish from list-oriented hiring tools such as hiring_list_applicants.

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 phrase 'One application in full' implies retrieving a specific applicant record, but the description never states when to use this over hiring_list_applicants, hiring_screen_queue, or hiring_assessment_results. Usage is inferable but not explicitly guided.

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