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paladini

devutils-mcp-server

generate_uuid

Generate cryptographically secure UUID v4 identifiers for applications, with options to create multiple UUIDs at once.

Instructions

Generate a cryptographically secure UUID v4.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
countNoNumber of UUIDs to generate (1-100, default: 1)

Implementation Reference

  • The tool 'generate_uuid' is defined and implemented directly within the registration call to server.tool inside registerGeneratorTools.
    // UUID v4 generator
    server.tool(
      "generate_uuid",
      "Generate a cryptographically secure UUID v4.",
      {
        count: z
          .number()
          .int()
          .min(1)
          .max(100)
          .default(1)
          .describe("Number of UUIDs to generate (1-100, default: 1)"),
      },
      async ({ count }) => {
        const uuids = Array.from({ length: count }, () => randomUUID());
        return {
          content: [{ type: "text" as const, text: uuids.join("\n") }],
        };
      }
    );
Behavior3/5

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

With no annotations provided, the description carries the full burden. It discloses 'cryptographically secure' (randomness quality) and 'v4' (version-specific algorithm), but fails to specify the return format—critical given the 'count' parameter suggests variable output (single string vs array) and no output schema exists.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Six words, single sentence, front-loaded with action verb. Every word earns its place. No redundancy or unnecessary elaboration for this simple utility function.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Adequate for a single-parameter utility, but incomplete due to missing return value specification. Without an output schema, the description should clarify whether the tool returns a single UUID string or an array when count > 1.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, with the 'count' parameter fully documented in the schema (type, range, default). The description mentions no parameters, but with high schema coverage, the baseline score of 3 is appropriate; no additional parameter semantics are provided.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description provides a specific verb ('Generate'), specific resource ('UUID v4'), and quality attribute ('cryptographically secure'). It clearly distinguishes from siblings like generate_nanoid and generate_random_hex by specifying the exact RFC 4122 version and format.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no explicit guidance on when to use this tool versus sibling generators (generate_nanoid, generate_random_hex, generate_password). While the specific naming implies UUID v4 compliance, there is no 'when-to-use' or comparison context.

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

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