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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds genuinely useful behavior beyond that: an explicit cap of 20 places per call and a full list of returned fields, which tells the agent what a call yields.

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 purpose and scoping are front-loaded in the first sentence, the example is compact, and the return-field list and use cases follow in an efficient order. No sentence is wasted, though the field enumeration is dense.

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 output schema, the description correctly compensates by enumerating the return fields, and it covers parameters and use cases. It is essentially complete for a read-only search tool, with only pagination behavior beyond the per-call cap left implicit.

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%, so query, location and limit are all documented in the schema (including the 1-20 clamp and default). The description restates the 20-place cap and shows an example invocation but adds no syntax or format detail beyond the schema, so the baseline 3 applies.

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 verb and resource: search Google Maps places for a term, optionally narrowed to an area, with a concrete example. It clearly conveys discovery of local businesses, but does not explicitly distinguish itself from the sibling google-maps-reviews, even though it lists totalScore and reviewsCount as fields.

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 offers concrete use cases (local lead lists, store/competitor mapping, checking hours or phone) which implies when to use it, but provides no when-not guidance or named alternatives such as google-maps-reviews for review data.

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