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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds one useful behavioral fact, the 'up to 20 cards' return cap drawn from 'that inventory preview', but says nothing about ordering, pagination, or what an empty result means for a category with no inventory.

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?

Two compact sentences, front-loaded with the resource and scope, with the required-parameter instruction second. Minor friction: the tool is named list_category_places but the description opens with 'Filter the venue cards', a verb shift that briefly suggests a different operation.

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 read-only, well-schematized tool with an output schema and nine fully described parameters, the description covers the essentials: what it returns, the scoping context it needs, and the result cap. Only the relationship between the optional filters and the category context is 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 all nine parameters are already documented in the schema. The description only reinforces pagePath ('Provide the category page path') and does not explain how the optional filters (name, audience, neighborhood, etc.) combine with the mandatory page-path context — baseline 3 is appropriate.

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: it filters/returns venue cards for one category within a destination, with a concrete example (Culture). That is clear enough to act on, but it does not distinguish itself from near siblings such as list_destination_places or list_collection_places, so an agent must infer the scope difference from the name alone.

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 an operational instruction — 'Provide the category page path' — which implies this runs against a category page context. However, there is no explicit when-to-use versus when-not guidance and no named alternative for cases where the agent wants all places in a destination rather than a category preview.

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