SMTP MCP Server

Instructions

Implementation Reference

• src/requestHandler.ts:352-400 (handler)

  The main handler function that executes the delete-smtp-config tool. It finds and removes the SMTP config by ID from storage, prevents deletion of the last config, handles default config promotion, and saves changes.

  async function handleDeleteSmtpConfig(parameters: any) {
    try {
      // Get existing configs
      const configs = await getSmtpConfigs();
      
      // Find the config to delete
      const configIndex = configs.findIndex(config => config.id === parameters.id);
      
      if (configIndex === -1) {
        return {
          success: false,
          message: `SMTP configuration with ID ${parameters.id} not found`
        };
      }
      
      // Check if trying to delete the only config
      if (configs.length === 1) {
        return {
          success: false,
          message: 'Cannot delete the only SMTP configuration'
        };
      }
      
      // Check if deleting the default config
      const isDefault = configs[configIndex].isDefault;
      
      // Remove the config from the list
      configs.splice(configIndex, 1);
      
      // If deleting the default config, set another one as default
      if (isDefault && configs.length > 0) {
        configs[0].isDefault = true;
      }
      
      // Save the updated configs
      await saveSmtpConfigs(configs);
      
      return {
        success: true,
        message: 'SMTP configuration deleted successfully'
      };
    } catch (error) {
      logToFile('Error in handleDeleteSmtpConfig:');
      logToFile(error instanceof Error ? error.message : 'Unknown error');
      return {
        success: false,
        message: error instanceof Error ? error.message : 'Unknown error'
      };
    }

• src/tools.ts:270-283 (schema)

  Defines the input schema, name, and description for the delete-smtp-config tool.

  "delete-smtp-config": {
    name: "delete-smtp-config",
    description: "Delete an SMTP configuration",
    inputSchema: {
      type: "object",
      properties: {
        id: {
          type: "string",
          description: "ID of the SMTP configuration to delete"
        }
      },
      required: ["id"]
    }
  },

• src/requestHandler.ts:84-85 (registration)

  Registers the handler for delete-smtp-config in the tool call switch statement.

  case "delete-smtp-config":
    return await handleDeleteSmtpConfig(toolParams);

• src/index.ts:59-63 (registration)

  Creates the tools map (including delete-smtp-config) and sets up the MCP server request handlers that expose the tools.

  const TOOLS = createToolDefinitions();
  
  // Setup request handlers
  await setupRequestHandlers(server, TOOLS);