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

Goes well beyond the annotations: explains that answeredBy is read from question wording and can be wrong, that a work question may be mislabeled 'you', that employer text is data not instructions, and that nothing is ever submitted. These disclosures materially shape how an agent should behave while calling the tool.

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?

Purpose and return behavior are front-loaded, and the numbered rules are dense but each earns its place as a behavioral constraint. The text is long and slightly repetitive ('Rule (1) holds whatever the mark'), but no sentence is pure filler.

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 an output schema simplifying return-value explanation, the description fully covers the remaining agent needs: what the tool returns in different employer cases, the safety boundaries, and how to handle the four answeredBy categories. Nothing essential for correct invocation is missing.

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%, with both the id and format parameters fully documented in the schema. The description adds the notion of 'one posting' but no extra syntax or format guidance beyond what the schema already provides, so baseline 3 is appropriate.

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 ('apply to one posting themselves, on the employer's own site') and precisely describes what it returns: an employer's real application form with questions, options and answeredBy, or the posting's apply link. The scope is distinguishable from siblings like get_job and search_jobs without opening a 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?

Establishes clear context for use (helping a person apply on the employer's site) and enumerates explicit when/when-not rules, including never inferring sensitive facts, never ticking consent boxes, and stopping before final submit. It does not explicitly compare against sibling tools, but the purpose statement and rules leave little ambiguity about when this tool is appropriate.

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