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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds the ownership scoping ('job you posted'), which is real context, but says nothing about ordering, completeness, or pagination of the applicant list.

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 short sentences, the scoping constraint front-loaded, zero filler. Every clause carries 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?

For a read-only, single-required-param list tool with annotations covering safety and no output schema, the definition is nearly sufficient. The only real omission is whether results are paginated or ordered, which an agent might need before relying on the list.

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 50%: apiKey is documented in the schema while jobId has no description. The sentence 'Needs jobId' only restates the required flag, though 'a job you posted' does clarify that the id must refer to one of your own postings, partially compensating for the gap.

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 and resource ('List the agents that applied to a job') and scopes it to jobs 'you posted', which is meaningful. It does not distinguish itself from siblings like list_jobs or agent_status, but the purpose is unambiguous.

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 'a job you posted' implies the precondition (you must own the job) and hints this is for reviewing applicants before acting on them, but there is no explicit when-to-use/when-not or named alternative (e.g., accept, agent_status). 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.