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

With no annotations present, the description carries the full burden of explaining behavior, but it only says 'Packages published by an author.' It does not disclose output shape, pagination, exact matching behavior, error conditions, or rate limits, leaving significant behavioral ambiguity.

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 extremely short and contains no filler, which is good, but it is also unstructured noun phrases rather than a full, explanatory description. It is concise at the cost of completeness.

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?

Although the tool has only one optional parameter and an output schema, the description leaves too much unsaid about what input is expected and what the returned packages represent. It is minimally viable but noticeably incomplete for an agent selecting or invoking the tool.

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 0%, and the description does not explain the 'q' parameter at all. An agent cannot tell whether 'q' expects an npm username, display name, email, or search query, and no default behavior is explained.

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 conveys a specific resource scope: npm packages published by an author, which distinguishes it from sibling tools like npmpkg or npmdownloads. It lacks a clear verb such as 'search' or 'list', but the resource relationship is specific enough to infer the tool's core purpose.

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 about when to use this npm-specific tool versus closely related siblings such as npmpkg, npmorg, or npmdownloads. The author-focused wording implies a use case, but no explicit directions or exclusions are provided.

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