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tanker327

UUID MCP Provider

by tanker327

generateUuid

Generate timestamp-based UUID v7 identifiers for chronological sorting and guaranteed uniqueness without requiring input parameters.

Instructions

Generate a UUID v7 that's timestamp-based and guaranteed to be unique

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Implementation Reference

  • Executes the generateUuid tool by generating a UUID v7 using the uuidv7 function and returning it as text content in the response.
    if (request.params.name === "generateUuid") {
      // UUID v7 is timestamp-based with additional random data for uniqueness
      const uuid = uuidv7();
    
      return {
        content: [
          {
            type: "text",
            text: uuid
          }
        ]
      };
    }
  • src/index.ts:18-34 (registration)
    Registers the tools/list request handler, which advertises the generateUuid tool including its name, description, and input schema.
    server.setRequestHandler(
      ListToolsRequestSchema,
      async () => {
        return {
          tools: [
            {
              name: "generateUuid",
              description: "Generate a UUID v7 that's timestamp-based and guaranteed to be unique",
              inputSchema: {
                type: "object",
                properties: {}
              }
            }
          ]
        };
      }
    );
  • Defines the input schema for the generateUuid tool as an empty object (no input parameters required).
    inputSchema: {
      type: "object",
      properties: {}
    }
  • Imports the UUID v7 generator function (uuidv7) used in the tool handler.
    import { v7 as uuidv7 } from 'uuid';
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 that the tool generates a UUID v7 (implying a read-only operation that produces output) and specifies it's 'timestamp-based' and 'guaranteed to be unique', which adds useful behavioral context. However, it doesn't mention potential side effects, error conditions, or performance characteristics, leaving some gaps.

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?

The description is a single, efficient sentence that directly states the tool's function and key attributes ('timestamp-based', 'guaranteed to be unique'). It is front-loaded with the core purpose and avoids any unnecessary words, making it highly concise and well-structured.

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

Completeness4/5

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

Given the tool's simplicity (0 parameters, no output schema, no annotations), the description is nearly complete for its context. It clearly explains what the tool does and key behavioral traits. A minor deduction is made because it doesn't specify the output format or any usage constraints, but overall it's sufficient for a basic generation tool.

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

Parameters4/5

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

The input schema has 0 parameters with 100% coverage, so no parameter documentation is needed. The description appropriately focuses on the tool's purpose without redundant parameter details, earning a baseline score of 4 for effectively handling a parameterless tool.

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 clearly states the specific action ('Generate') and resource ('UUID v7'), with additional specificity about it being 'timestamp-based' and 'guaranteed to be unique'. It fully distinguishes what the tool does without any sibling tools to differentiate from.

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

Usage Guidelines3/5

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

The description implies usage context through 'timestamp-based' and 'guaranteed to be unique', suggesting it's suitable for scenarios requiring time-ordered unique identifiers. However, it lacks explicit guidance on when to use this tool versus alternatives, and there are no sibling tools mentioned to provide comparative 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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