workflows-mcp

Instructions

Implementation Reference

• src/index.ts:866-891 (handler)

  The main handler function that implements the get_workflow_versions tool logic: parses input, retrieves the workflow and its versions from storage, and returns formatted response.

  private async getWorkflowVersions(args: unknown) {
    const parsed = GetWorkflowVersionsSchema.parse(args);
    
    const workflow = await this.storage.get(parsed.workflow_id);
    if (!workflow) {
      throw new Error(`Workflow not found: ${parsed.workflow_id}`);
    }
    
    const versions = await this.storage.listVersions(parsed.workflow_id);
    
    return {
      content: [
        {
          type: 'text',
          text: JSON.stringify({
            success: true,
            workflow_id: parsed.workflow_id,
            workflow_name: workflow.name,
            current_version: workflow.version,
            available_versions: versions,
            version_count: versions.length,
          }, null, 2),
        },
      ],
    };
  }

• src/index.ts:76-78 (schema)

  Zod schema defining the input: workflow_id (string).

  const GetWorkflowVersionsSchema = z.object({
    workflow_id: z.string(),
  });

• src/index.ts:297-300 (registration)

  Tool registration in the getTools() method, including name, description, and input schema.

    name: 'get_workflow_versions',
    description: 'List all available versions of a workflow',
    inputSchema: zodToJsonSchema(GetWorkflowVersionsSchema),
  },

• src/index.ts:136-137 (registration)

  Dispatch case in the CallToolRequestSchema handler that routes to the getWorkflowVersions method.

  case 'get_workflow_versions':
    return await this.getWorkflowVersions(args);