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 bar is low. The description adds genuinely useful context beyond them: each result carries a confidence rating (clearly shown / likely / a guess) and provenance ('who made it'), plus a non-affiliation disclaimer that sets expectations about unofficial fan data.

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?

A single front-loaded sentence enumerates the returned fields, followed by a short disclaimer. Nothing is redundant and the confidence-tier detail is packed compactly into the list.

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 one-optional-parameter read-only tool with no output schema, the description covers the shape of a result (status, visiting info, confidence, attribution) well enough to set expectations. The remaining gap is default behavior when no query is supplied — whether it returns everything or a sample.

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% for the single optional 'query' parameter, so the schema already explains it. The description never mentions the query at all — not what it matches against (place name, area, in-game location) nor what happens when it is omitted. Baseline 3 applies since the schema carries the load.

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 names a specific resource: real Miami-area locations matched to fictional Vice City spots from GTA VI trailers, and enumerates the fields returned (current status, visiting info, confidence, attribution). It is clearly distinguishable from siblings like things_to_do or nightlife, though it never uses an explicit verb such as 'list' or 'search', leaving the operation slightly implicit.

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?

No explicit when-to-use or when-not-to-use guidance and no sibling is named as an alternative. The content framing (a GTA VI trailer tie-in rather than a general events/venues guide) implies the use case, but the agent must infer that this is not the tool for general Miami planning.

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