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

Annotations already declare readOnly, idempotent and non-destructive, so safety is covered. The description adds genuinely useful context beyond them: "Free, no AI" tells the agent there is no billing or AI-consent implication, which matters because several siblings do consume AI runs/credits.

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 tight sentences with no filler. The output content and the placement expectation are front-loaded, and the usage/routing hint follows.

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 two-parameter read-only tool with full schema coverage and declared annotations, the description supplies purpose, trigger and cost model. It could say a bit more about the shape of the answer (e.g. a list of terms vs. a scored verdict), but nothing essential 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%: cvId already tells the agent to source the id from list_my_takemeup_cvs, and locale is fully enumerated with a documented default. The description adds nothing about parameters, so the baseline 3 applies.

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: extracts the key terms a recruiter should spot in a six-second skim of a CV, plus the concrete expectation that they belong in the top third of page 1. That framing distinguishes it from get_takemeup_cv_preview, which merely shows what is currently rendered.

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?

Gives an explicit trigger condition ("Use when the user asks whether their CV makes a strong first impression") and points to the complementary sibling get_takemeup_cv_preview. It does not state when NOT to use it or how it relates to the other CV review tools (roast, ats, buzzwords), so it stops short of full routing guidance.

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