McFlow

Instructions

Implementation Reference

• src/tools/handler.ts:179-183 (handler)

  The handler function for the 'activate' tool in the ToolHandler class's handleTool method. It delegates to n8nManager.updateWorkflowStatus with the provided workflow ID and active status.

  case 'activate':
    return await this.n8nManager.updateWorkflowStatus(
      args?.id as string,
      args?.active as boolean
    );

• src/tools/registry.ts:306-322 (schema)

  Defines the tool schema including name, description, and input schema (requires id and active boolean) for the 'activate' tool.

    name: 'activate',
    description: 'Activate or deactivate a workflow in n8n',
    inputSchema: {
      type: 'object',
      properties: {
        id: {
          type: 'string',
          description: 'Workflow ID',
        },
        active: {
          type: 'boolean',
          description: 'Set to true to activate, false to deactivate',
        },
      },
      required: ['id', 'active'],
    },
  },

• src/server/mcflow.ts:76-78 (registration)

  Registers all tools, including 'activate', by providing getToolDefinitions() in response to ListToolsRequestSchema in the MCP server setup.

  this.server.setRequestHandler(ListToolsRequestSchema, async () => ({
    tools: getToolDefinitions(),
  }));

• src/n8n/manager.ts:905-931 (helper)

  The core helper function that executes the n8n CLI command to activate or deactivate a workflow by ID and returns success/error messages.

  async updateWorkflowStatus(id: string, activate: boolean): Promise<any> {
    try {
      const command = activate 
        ? `n8n update:workflow --id=${id} --activate`
        : `n8n update:workflow --id=${id} --deactivate`;
      
      console.error(`Executing: ${command}`);
      const { stdout, stderr } = await execAsync(command);
      
      if (this.hasRealError(stderr, stdout)) {
        throw new Error(stderr);
      }
  
      return {
        content: [
          {
            type: 'text',
            text: `✅ Workflow ${activate ? 'activated' : 'deactivated'} successfully!\n\n` +
                  `🆔 Workflow ID: ${id}\n` +
                  `${activate ? '▶️ Status: Active' : '⏸️ Status: Inactive'}\n`,
          },
        ],
      };
    } catch (error: any) {
      throw new Error(`Failed to update workflow status: ${error.message}`);
    }
  }