get_packages_info

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

With no annotations provided, the description carries the full burden and adds valuable behavioral context: it discloses the batch processing capability ('Processes up to 100 packages in parallel') and error handling behavior ('error isolation - failed packages don't break the batch'). However, it doesn't mention rate limits, authentication needs, or response format details.

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 appropriately sized and front-loaded: the first sentence states the core purpose, followed by usage guidelines and behavioral details. Every sentence earns its place by adding value without redundancy, making it efficient and well-structured.

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 complexity (batch processing with error handling), no annotations, and no output schema, the description is mostly complete: it covers purpose, usage, and key behaviors. However, it lacks details on output format (e.g., what 'detailed info' includes) and any rate limits or permissions, leaving some gaps for a tool with no structured output.

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%, so the schema already documents both parameters ('packages' as an array of package names and 'registry' with an enum). The description adds no additional parameter semantics beyond what the schema provides, such as format examples or constraints, so it meets the baseline of 3.

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 verb ('Get comprehensive package details') and resource ('for multiple packages'), distinguishing it from sibling tools like 'get_package_info' (singular) and 'check_version_exists' (version checking). It specifies the scope of 'multiple packages' and the comprehensive nature of the details.

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 explicitly states when to use this tool: 'for dependency audits, security reviews, or bulk package analysis.' It distinguishes from siblings by implying this is for bulk operations, unlike 'get_package_info' (likely single-package) or version-checking tools, though it doesn't name specific alternatives.

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