brewery_list

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint, and non-destructive behavior, so the safety profile is covered. The description adds no behavioral context of its own: it never mentions that results are paginated despite page/per_page parameters existing, nor typical result size or ordering.

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 with no filler; the filtering capability is stated immediately. It is efficient but too thin to count as fully optimized.

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 simple read-only list endpoint with annotations covering safety, the description is nearly adequate, but missing pagination semantics and lacking sibling differentiation leaves meaningful gaps for correct invocation.

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 only 20% (only `type` has documented values), and the description partially compensates by naming city, state, and type as the filter dimensions. However, the two pagination parameters (`page`, `per_page`) are undocumented in both the schema and the description, leaving a real gap.

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?

Clear verb plus resource ("List breweries") and it names the narrowing dimensions. It does not distinguish itself from the sibling brewery_search, so the agent cannot tell from the description alone which one retrieves listings vs. searches them.

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?

The phrase "optionally filtered by city, state, or type" implies the browsing use case, but there is no explicit statement of when to choose this over brewery_search, brewery_get, or brewery_random, and no note that all parameters are optional.

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