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

No annotations are provided, so the description carries the burden. It usefully discloses the returned field set and the semantics of the 'live' field, but says nothing about permissions, completeness of the list, or pagination.

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 compact sentence with the resource and field list front-loaded. Efficient, though the trailing clause about 'live' showtimes is slightly compressed and could be clearer.

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 helpfully enumerates the returned fields, and the single optional parameter is fully covered by the schema. Adequate for a simple read-only list tool, though absence of any safety annotation leaves a small gap.

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 'city' parameter, so the schema already documents the filter and gives examples. The description adds no syntax or semantics beyond that; 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?

States a specific verb (list) and resource (Taiwan cinemas) and enumerates the returned fields (name, chain, city, address). The note about the 'live' field adds scope but does not sharply separate it from siblings like get_cinema_showtimes.

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?

Usage is implied — find cinemas, optionally filtered by city. The mention that cinemas with a non-empty 'live' field can query online showtimes gestures at get_cinema_showtimes, but there is no explicit when-to-use-this vs. that guidance or exclusions.

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