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

Annotations already cover safety (readOnly, idempotent, non-destructive), so the description earns credit for saying more: each data point carries its own status, the unlock hour may be unofficial and the answer flags which, and the service is explicitly not affiliated with Rockstar or Take-Two. That data-reliability and provenance disclosure is real context an agent cannot get from the annotations.

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 hook 'When GTA 6 comes out:' is front-loaded and the two trailing sentences (status caveat, non-affiliation) each earn their place. The middle sentence is a dense run-on enumeration, but no clause is filler.

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 a single optional parameter, no output schema, and full read-only annotations, the description does the heavy lifting by enumerating the returned content and its caveats. It is essentially complete, though it never sketches the response's shape (per-region list vs. single place) beyond the parameter's default behavior.

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% and the `place` parameter's own description already gives examples and the omit-for-all default, so the baseline is 3. The description adds only the fact that there are 15 regions, a marginal gain over the schema.

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 enumerates exactly what the tool returns — the official date, announced platforms, per-region unlock times, and launch-adjacent dates (preload, boxed copies, pre-order deadline) — so the resource and scope are unambiguous. It never names a sibling, so an agent must infer that claim-checking, edition comparison, pricing, and change history belong to check_claim/compare_editions/price_in_country/recent_changes rather than here.

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?

Usage is implied by the content list: come here for release-date and unlock-time facts. There is no explicit when-to-use or when-not-to-use statement and no routing to the obvious alternatives, even though price_in_country and compare_editions overlap thematically with 'platforms' and 'pre-order deadline'.

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