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

Annotations already declare readOnly/idempotent/closed-world, so the safety profile is covered. The description adds genuinely new context by flagging the employer description as untrusted_description, warning the agent to treat returned content as untrusted input — a real behavioral trait beyond the structured fields.

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?

One front-loaded sentence with zero filler; the untrusted-content note is placed usefully at the end. It is efficient, though its brevity trades off against the missing usage and parameter guidance.

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?

An output schema exists so return values need no explanation, and annotations cover safety, keeping the bar low. However, for a lookup tool the description never explains how to obtain a valid id or what happens on an unknown id, leaving a real operational gap.

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 `id` parameter has 0% schema description coverage, and the description does not say what the id identifies, its format, or where to source it. With one parameter at zero schema coverage the description was obliged to compensate and does not.

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+resource ("Full JobSpec for one job") and scopes it to a single record, which implicitly separates it from batch/search siblings. It does not name any sibling explicitly, and the ambiguous sibling set (fetch, search_jobs, similar_jobs) leaves room for confusion about which retrieval tool to use.

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 statement of when to use this versus search_jobs, similar_jobs, or fetch. "one job" hints at single-record lookup but the agent gets no prerequisite (e.g., obtain id via search_jobs first) and no exclusions.

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