Smartlead Simplified MCP Server

Instructions

Implementation Reference

• src/handlers/smartDelivery.ts:1172-1211 (handler)

  The main handler function that validates the input parameters using isGetFolderByIdParams, creates a SmartDelivery API client, makes a GET request to `/spam-test/folder/{folder_id}`, and returns the formatted JSON response or handles errors.

  async function handleGetFolderById(
    args: unknown, 
    apiClient: AxiosInstance,
    withRetry: <T>(operation: () => Promise<T>, context: string) => Promise<T>
  ) {
    if (!isGetFolderByIdParams(args)) {
      throw new McpError(
        ErrorCode.InvalidParams,
        'Invalid arguments for smartlead_get_folder_by_id'
      );
    }
  
    try {
      const smartDeliveryClient = createSmartDeliveryClient(apiClient);
      const { folder_id } = args;
      
      const response = await withRetry(
        async () => smartDeliveryClient.get(`/spam-test/folder/${folder_id}`),
        'get folder by ID'
      );
  
      return {
        content: [
          {
            type: 'text',
            text: JSON.stringify(response.data, null, 2),
          },
        ],
        isError: false,
      };
    } catch (error: any) {
      return {
        content: [{ 
          type: 'text', 
          text: `API Error: ${error.response?.data?.message || error.message}` 
        }],
        isError: true,
      };
    }
  }

• src/tools/smartDelivery.ts:548-562 (schema)

  Defines the tool metadata including name, description, category, and input schema requiring a 'folder_id' integer parameter.

  export const GET_FOLDER_BY_ID_TOOL: CategoryTool = {
    name: 'smartlead_get_folder_by_id',
    description: 'Get details of a specific folder by ID.',
    category: ToolCategory.SMART_DELIVERY,
    inputSchema: {
      type: 'object',
      properties: {
        folder_id: {
          type: 'integer',
          description: 'ID of the folder to retrieve',
        },
      },
      required: ['folder_id'],
    },
  };

• src/types/smartDelivery.ts:414-421 (helper)

  Type guard function that validates the input arguments match the expected GetFolderByIdParams interface (object with numeric 'folder_id').

  export function isGetFolderByIdParams(args: unknown): args is GetFolderByIdParams {
    return (
      typeof args === 'object' &&
      args !== null &&
      'folder_id' in args &&
      typeof (args as GetFolderByIdParams).folder_id === 'number'
    );
  }

• src/index.ts:217-219 (registration)

  Registers the smartDeliveryTools array (which includes this tool) to the MCP tool registry if the smartDelivery category is enabled.

  if (enabledCategories.smartDelivery) {
    toolRegistry.registerMany(smartDeliveryTools);
  }

• src/handlers/smartDelivery.ts:119-121 (registration)

  Switch case in handleSmartDeliveryTool that routes calls to this specific tool handler.

  case 'smartlead_get_folder_by_id': {
    return handleGetFolderById(args, apiClient, withRetry);
  }