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

Annotations already declare readOnlyHint=true and destructiveHint=false, so safety is covered. The description still adds genuine behavioral context beyond the annotations: bank and NI requested values are redacted (a data-visibility constraint an agent must know about), plus the exact REST endpoints used. It omits pagination mechanics, but those live in the schema.

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?

Two tight sentences, front-loaded with what the resource is and what it contains before the scoping and redaction caveats. No filler and nothing repeated from the schema.

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?

With no output schema, the description carries the burden of conveying the return shape, and it does so by naming the returned fields and the redaction exception. Pagination semantics are delegated to the schema, which is reasonable, but a brief note on ordering or result volume would have made it fully self-sufficient.

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 100%, so page, per_page, and employee_id are fully documented in the schema; baseline is 3. The description reinforces the employee scoping but adds no syntax or format detail beyond what the schema already 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 (List) plus the resource (employee self-service change requests) and enumerates the payload fields (field, requested value, approval state), then clarifies the two scopes (all employees or one). An agent can distinguish this from siblings like breathehr_list_leave_requests or breathehr_list_absences without opening any schema.

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 'for all employees or one employee' implies the usage split controlled by employee_id, and the endpoint mapping hints at the underlying routing. However, there is no explicit when-to-use-vs-alternatives guidance (e.g. how this differs from list_employees or the leave-request tools), so usage is only implied.

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