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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds essentially nothing beyond that: no note on data freshness, whether disclosures may be empty or unavailable for some items, or regional/language effects on results, despite Lang and Country parameters existing.

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 short sentence with no filler, appropriately sized and front-loaded. It is efficient, though the terseness edges toward under-specification rather than true conciseness.

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?

An output schema exists, so return values need not be explained, and all three parameters are fully documented in the schema. For a simple read tool this is minimally adequate, but the description leaves the agent without the context needed to route correctly among the chromewebstore_* siblings.

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%, with each parameter (ID, Lang, Country) documented in the schema including formats and defaults, so the description need not carry this burden. The description adds no extra parameter meaning, matching the baseline for fully documented schemas.

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 names the resource (Chrome Web Store item) and the data domain (privacy disclosures), so an agent can infer it retrieves privacy disclosure data for a listed item. However, it omits any verb and does not clearly separate itself from the closely related sibling chromewebstore_permissions, which also concerns an item's data-handling profile.

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 no guidance on when to call this versus alternatives such as chromewebstore_item or chromewebstore_permissions, nor any prerequisite (e.g., needing a valid extension ID obtained from a search first). Usage is left entirely to inference.

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