popular_nearby

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

No annotations are provided, so the description carries the full burden. It does not disclose what 'popular' means (rating? review count?), whether a radius can be controlled, how many results return, or whether this is a read-only lookup — leaving the agent with only the word 'popular' as a hint.

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?

One short sentence with the key concept front-loaded and no filler. Its brevity is honest rather than padded, though it comes at the cost of detail covered under other dimensions.

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 no annotations, no output schema, and 0% parameter description coverage, the definition would need to explain ranking, result shape, and coordinate format. It supplies none of these, so an agent cannot confidently invoke it over the search_restaurants sibling.

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 both parameters are required numbers, but the description only vaguely ties them to 'a coordinate' — no format (decimal degrees), valid ranges, or coordinate system is specified.

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 verb and resource ('Get popular items') scoped to 'near a coordinate', but 'items' is undefined — it could mean venues, dishes, or reviews — and nothing distinguishes it from search_restaurants or suggest_search in the sibling list.

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 guidance on when to use this versus search_restaurants or area_level1/area_level2, and no prerequisites or exclusions. The agent must guess based on geo-proximity versus keyword search.

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