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

Goes well beyond the annotations by disclosing the auth model (connected account, no extra sign-in) and a concrete per-account daily rate limit (50/day), which explains why readOnlyHint=false despite the 'get' verb. It stops short of describing the response payload or what happens when the quota is exhausted.

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 tight sentences, front-loaded with purpose, then auth/quota constraints, then parameter sourcing. Every sentence earns its place with no restatement of the name or schema.

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 two-parameter tool with no output schema, the description supplies the essentials an agent needs: purpose, trigger condition, auth, and quota. Only the return shape and quota-exhaustion behavior are left unstated, which is a minor 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?

Schema coverage is 100% and the schema already documents both slugs plus their URL origin, so the schema carries the parameter burden. The description's 'from job listings' adds only marginal sourcing guidance beyond what the schema states.

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 ('Get the employer's application link for a job') and scopes it to the moment of decision. It is clearly distinguishable from the other get_*_link siblings (billing portal, headshots, interview practice, verification), which target entirely different resources.

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 'once the user has decided to apply' gives clear usage context and implicitly excludes pre-decision browsing. It doesn't name an alternative tool, but the sibling set contains no genuinely competing tool, so the omission is minor.

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