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

With no annotations, the description carries the full burden, and it does disclose two useful traits: a bearer key is required, and the token is single use. It omits other relevant behavior such as token expiry, whether previously issued links are invalidated, and whether creating the link mutates the underlying record.

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, front-loaded sentences with the core purpose first, then auth, then the single-use constraint. Minor redundancy: 'one-time URL' and 'The token is single use' restate the same property.

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 simple three-parameter mutation with no output schema and no annotations, the description covers purpose and the key constraint but leaves the parameters entirely unexplained and never states how the generated URL is returned. Adequate but with clear gaps.

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% across three parameters, so the description must compensate but adds nothing about record_id, supervisor_name, or supervisor_email. At best, 'the recorded hours' loosely hints that record_id identifies a work record.

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 gives a specific verb+resource: 'Create a one-time URL' for supervisor confirmation of recorded hours, which is clearly distinct from siblings like create_record or check_hours. It never names or contrasts a sibling tool, so differentiation is only implicit.

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?

There is no explicit when-to-use guidance, no prerequisites, and no alternatives named (e.g., when to request signoff vs. just reading hours with check_hours). The usage is only inferable from the stated purpose.

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