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

Annotations already declare readOnlyHint=true, destructiveHint=false, and idempotentHint=true, covering the safety profile. The description adds useful context beyond annotations: the dependency on prior steps and the scoping of applicant_id. It does not contradict annotations and adds value by explaining the prerequisite chain, which is not present in 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?

The description is three short sentences with no filler. It front-loads the core purpose and then provides the chain and scoping constraint. Every sentence adds necessary information, and it is appropriately sized for the tool's simplicity.

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?

Given the tool's simplicity, the description covers the essential usage: the chain and scoping. There is no output schema, but the description implies a single applicant is returned. It does not explicitly state the return format, but that is minor given the read-only nature and the clear purpose. Overall, it is complete enough for an agent to call correctly.

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 each parameter already described in detail. The description adds only a marginal clarification that applicant_id is scoped to the project context, which is also implied in the schema. Thus it does not significantly enhance understanding beyond the schema, so the baseline of 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?

The description states a specific verb and resource: 'Get one Recruiter applicant.' It clearly indicates this is a single-applicant retrieval, distinguishing it from list-applicant tools. It also conveys the required context chain, making the purpose unambiguous even among many LinkedIn sibling tools.

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 description provides an explicit required chain: list/select Hiring Project -> project.id -> list applicants -> applicant.id. It clarifies that applicant_id is scoped to the project context. It does not explicitly mention when not to use this tool or name alternatives like linkedin_recruiter_list_applicants, but the chain implies it is for a single already-listed applicant, which is sufficient guidance.

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