Smartlead Simplified MCP Server

Instructions

Implementation Reference

• src/handlers/smartDelivery.ts:265-304 (handler)

  Core handler function that validates input parameters, makes API call to retrieve spam test details from SmartDelivery endpoint `/spam-test/${spam_test_id}`, formats response as MCP content, and handles errors.

  async function handleGetSpamTestDetails(
    args: unknown, 
    apiClient: AxiosInstance,
    withRetry: <T>(operation: () => Promise<T>, context: string) => Promise<T>
  ) {
    if (!isGetSpamTestDetailsParams(args)) {
      throw new McpError(
        ErrorCode.InvalidParams,
        'Invalid arguments for smartlead_get_spam_test_details'
      );
    }
  
    try {
      const smartDeliveryClient = createSmartDeliveryClient(apiClient);
      const { spam_test_id } = args;
      
      const response = await withRetry(
        async () => smartDeliveryClient.get(`/spam-test/${spam_test_id}`),
        'get spam test details'
      );
  
      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:174-188 (schema)

  MCP tool definition including name, description, category, and JSON schema for input validation (requires spam_test_id as integer).

  export const GET_SPAM_TEST_DETAILS_TOOL: CategoryTool = {
    name: 'smartlead_get_spam_test_details',
    description: 'Retrieve details of a specific spam test by ID.',
    category: ToolCategory.SMART_DELIVERY,
    inputSchema: {
      type: 'object',
      properties: {
        spam_test_id: {
          type: 'integer',
          description: 'ID of the spam test to retrieve details for',
        },
      },
      required: ['spam_test_id'],
    },
  };

• src/types/smartDelivery.ts:225-232 (schema)

  TypeScript type guard function used in the handler to validate input arguments against GetSpamTestDetailsParams interface (checks for spam_test_id number).

  export function isGetSpamTestDetailsParams(args: unknown): args is GetSpamTestDetailsParams {
    return (
      typeof args === 'object' &&
      args !== null &&
      'spam_test_id' in args &&
      typeof (args as GetSpamTestDetailsParams).spam_test_id === 'number'
    );
  }

• src/handlers/smartDelivery.ts:53-55 (registration)

  Switch case in handleSmartDeliveryTool that registers and dispatches the tool call to the specific handler function.

  case 'smartlead_get_spam_test_details': {
    return handleGetSpamTestDetails(args, apiClient, withRetry);
  }