uuid

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only states 'Generate a UUID v4' and does not mention the random nature, security implications, or any side effects. There is no added context beyond what the tool name conveys.

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, front-loaded sentence with zero wasted words. It is appropriately sized for the tool's simplicity.

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 has a simple function with one optional parameter, and the schema fully covers that parameter. The return value (a UUID string) is implicit from the description. No output schema exists, but the description implies the output clearly enough. Slight lack of context around behavior like count limits or error handling, but for this tool it is adequate.

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?

The schema description coverage is 100% for the single 'count' parameter, so the baseline is 3. The description itself does not add parameter-specific details, but the schema fully documents the parameter's meaning and default behavior.

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 'Generate a UUID v4' uses a specific verb ('Generate') and a specific resource ('UUID v4'), clearly distinguishing it from sibling tools like nanoid or random_string. It is concise and unambiguous.

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 usage context is implied by the tool's purpose: if you need a UUID v4, use this tool. However, there is no explicit guidance on when not to use it or when to prefer an alternative (e.g., nanoid for short IDs). The description does not mention any conditions or exclusions.

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