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

Annotations already declare readOnly, idempotent, non-destructive and openWorld, so the safety profile is covered. The description adds the content shape of the result rather than new behavioral traits such as latency, limits, or freshness of advert data; with annotations carrying the behavioral load, a 3 is appropriate.

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 appropriately sized and front-loaded: purpose first, then trigger phrases, then outputs, then inputs. The opening sentence repeats the tool title almost verbatim, which is the only wasted line.

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 no output schema, the description compensates well by enumerating the deliverables. Combined with annotations that cover the safety profile and a fully documented schema, an agent has enough to call it correctly; only return format details are absent.

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%, so all three parameters are already documented, and none are required. The phrase "takes a job id from a search, or the role and company" usefully frames the two modes but adds little syntax or format detail beyond the schema, matching the baseline 3.

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 resource (interview questions and practice) and enumerates exactly what it produces: likely role questions, advert-derived questions, behavioural questions, questions to ask them, video/AI interview tips, and a timed practice order. This is far more specific than a name restatement and lets an agent know precisely what it will get back.

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 quoted trigger phrases ("help me prepare for my interview", "do a mock interview") make the intended invocation context unambiguous, and it explains the two input modes (job id from a search, or role and company). It stops short of naming alternatives or when not to use it, so it is clear context without exclusions.

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