chromewebstore_item

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

With no annotations, the description carries the full burden. It lists returned fields but does not disclose behavioral traits such as rate limiting, error handling for invalid IDs, or that the ID must be 32 characters (only mentioned in schema). No mention of what 'normalized detail' means or any side effects.

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 a single sentence followed by a list, which is reasonably concise. It front-loads the main action. However, the list could be more compact, and the defaults are mentioned inline instead of in a structured way. Overall efficient but not perfectly organized.

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?

Given the tool's simplicity (3 parameters, no output schema), the description covers the key aspects: what it does, what data is returned, and defaults. It lacks mention of required parameter (schema covers that) and any edge cases, but is largely complete for its scope.

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 100% (all three parameters documented), so baseline is 3. The description adds value by stating the default values for 'country' and 'lang' (us and en), which is not in the schema. This improves usability.

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 retrieves Chrome Web Store item details, specifying the verb 'Retrieve' and the resource 'Chrome Web Store item'. It lists the data fields returned (name, rating, user count, etc.), distinguishing it from sibling tools like chromewebstore_search (which searches) or chromewebstore_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?

The description implies usage when you need details for a specific item by ID, but does not explicitly state when to use this tool versus alternatives like chromewebstore_search or chromewebstore_similar. No guidance on when not to use it or prerequisites.

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