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

With no annotations, the description discloses key behaviors: it returns review quotes, sentiment, publication, critic details, and pageInfo, and mentions pagination via endCursor. It also states the token cost. It does not describe error cases or rate limits, but covers the essential behavior.

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 description is concise and front-loaded: it states the core purpose in the first sentence, then covers returns, pagination, filtering, and cost in three short sentences. No filler or redundant information.

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?

The tool is straightforward with only four parameters and an output schema present. The description fully covers purpose, pagination mechanics, filtering, and cost, which is sufficient given the low complexity and rich schema documentation.

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?

All four parameters are already well-documented in the schema (100% coverage). The description adds some context for review_type (critic filter) and cursor (from pageInfo.endCursor), but these mostly echo the schema. It does not add substantive new meaning beyond the schema.

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 clearly states the tool loads reviews for a movie by slug, with a concrete example. It distinguishes itself from sibling tools like movie_details and search by focusing specifically on reviews.

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?

Provides clear guidance on pagination using the cursor and the optional review_type filter for critic-only reviews. It implies when to use this tool (when reviews are needed) but does not explicitly mention alternatives or exclusions.

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