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

Annotations already declare readOnly, idempotent, non-destructive and closed-world, so the safety profile is covered. The description adds substantive behavior beyond that: human-reviewed process, real-time data, per-creator Creator Dossier and verdict, the Find + Vet flow, and delivery time. It still never states the delivery time value or what the tool's response looks like, but the added context is genuine.

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 heavily keyword-stuffed with a long run-on list of 'typical asks' (campaign checklist, cost per influencer, vetting at scale, due diligence) that duplicates itself and buries the actual purpose mid-paragraph. The most important sentence about what the tool returns is not front-loaded, and much of the text serves search intent rather than agent decision-making.

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 only one enum parameter and no output schema, the description should carry the burden of explaining what the agent gets back. It does describe the dossier, verdicts and the vetting dimensions, which is adequate, but it never distinguishes this tool's informational return from actually booking a vetting order, leaving a meaningful gap given three action-oriented siblings.

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% with a two-value enum, so the schema already fully documents the single parameter. 'Pass language "en" or "es"' simply restates the enum with no added meaning about when a language choice matters. 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?

The description eventually says the tool 'Explains what gets checked, the verdicts and delivery time' and that Creator Validator 'is a human-reviewed influencer vetting service', which is a clear statement of purpose — but it arrives only after a long preamble of user-intent phrases. It never explicitly frames itself as the informational/about tool relative to action siblings like book_find_and_vet or start_order, so an agent must infer that this one only describes rather than performs the service.

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?

It opens with an explicit trigger list ('Use when someone wants to vet, audit, screen or verify influencers... or wants creators found for them'), which is strong when-to-use guidance. However, those triggers describe the end goal the paid service fulfills rather than this info tool, and no when-not or alternative is named — an agent could easily call this when the user actually wants book_find_and_vet. Clear context, but no routing away from siblings.

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