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

No annotations are provided, so the description carries the full disclosure burden. It does reveal one genuinely useful behavioral trait — the default target is GTA VI when no argument is given — but says nothing about ambiguous names, unknown games, error behavior, or the shape of the answer.

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?

It is a single tight sentence with the category tag and the core behavior front-loaded. Nothing is wasted, though the bracketed database label is closer to branding than to instruction.

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 zero-annotation, one-optional-parameter tool with no output schema, the description covers the basic contract but omits what the return value looks like (a day count) and how misses are handled. Adequate but with visible gaps.

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 0% and the single parameter 'q' is never described. The mention of a GTA VI default only weakly implies that q accepts a game name; nothing indicates whether it takes a fuzzy title, a slug, or a localized name.

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 computation (days remaining until a game's release) on a specific resource (game release/trailer database), which is more precise than the bare name. It does not, however, distinguish itself from the closely named sibling games__release_calendar or screen__release_countdown, leaving the boundary to inference.

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?

There is no when-to-use or when-not-to-use guidance and no named alternative, even though several sibling tools (release_calendar, get_game, lookup_any_game) plausibly overlap. The only usage signal is the implied default of GTA VI when no query is supplied.

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