One Click Deploy Smartlead MCP Server with SSE

This is a Model Context Protocol (MCP) server, enhanced with Supergateway, that allows AI agents to interact with the Smartlead campaign management API over Server-Sent Events (SSE).

Deployment

One-Click Deploy to Railway

Click the "Deploy on Railway" button above. Railway will guide you through creating a new project from this template and configuring the necessary environment variables (see "Configuration" below).

Docker Deployment (Manual / Local Testing)

The Dockerfile in this repository builds the smartlead-mcp-server and runs it with Supergateway.

1. Build the Docker Image:

   docker build -t smartlead-mcp-server-supergateway .

2. Run the Docker Container:

   # Replace YOUR_SMARTLEAD_API_KEY with your actual Smartlead API key
   # The server will be accessible via SSE on http://localhost:8001/sse (host port 8001 mapped to container port 8000)
   docker run --rm -it -p 8001:8000 \
     -e PORT=8000 \
     -e SMARTLEAD_API_KEY="YOUR_SMARTLEAD_API_KEY" \
     -e SMARTLEAD_API_URL="https://server.smartlead.ai/api/v1" \
     -e DEBUG=true \
     smartlead-mcp-server-supergateway

   Supergateway provides default paths: /sse for the event stream and /message for posting messages. The health check is at /healthz.

Related MCP server: Smartlead Simplified MCP Server

Configuration

The server requires the following environment variables. When deploying to Railway, you will be prompted for these. For local Docker runs, pass them using the -e flag.

• SMARTLEAD_API_KEY: Your Smartlead API key. Required and should be treated as a secret.

• SMARTLEAD_API_URL (Optional): Custom Smartlead API URL. Defaults to https://server.smartlead.ai/api/v1.

• SMARTLEAD_RETRY_MAX_ATTEMPTS (Optional): Maximum retry attempts for API calls. Default: 3.

• SMARTLEAD_RETRY_INITIAL_DELAY (Optional): Initial delay in milliseconds for retries. Default: 1000.

• SMARTLEAD_RETRY_MAX_DELAY (Optional): Maximum delay in milliseconds for retries. Default: 10000.

• SMARTLEAD_RETRY_BACKOFF_FACTOR (Optional): Backoff factor for retry delays. Default: 2.

• DEBUG (Optional): Set to true for verbose logging from the server and Supergateway, or false for production. Default: false.

• PORT (Set by Railway/Container): The port Supergateway will listen on inside the container. The Dockerfile default is 8000. When running locally with Docker, you map a host port to this container port (e.g., -p 8001:8000).

Connecting to the Server (Client Integration)

Once the smartlead-mcp-server is running (e.g., deployed on Railway or locally in Docker), it exposes an MCP interface over Server-Sent Events (SSE).

The Supergateway instance typically makes the MCP server available at:

• SSE Stream: http://<server_address>:<port>/sse

• Message Endpoint (if used): http://<server_address>:<port>/message

(If deployed on Railway, <server_address>:<port> will be your public Railway URL, e.g., https://my-smartlead-mcp.up.railway.app)

1. Direct SSE Connection (Preferred for SSE-aware clients): If your MCP client (e.g., your AI agent's framework) natively supports connecting to an MCP server via an SSE URL, configure it accordingly.

   Example mcp.json configuration for direct SSE:

   {
     "mcpServers": {
       "smartlead_remote_sse": {
         "url": "https://YOUR_RAILWAY_DEPLOYMENT_URL/sse", // Replace with your actual Railway SSE URL
         "disabled": false,
         "alwaysAllow": [
           "smartlead_create_campaign",
           "smartlead_update_campaign_schedule",
           "smartlead_update_campaign_settings",
           "smartlead_get_campaign",
           "smartlead_list_campaigns",
           "smartlead_save_campaign_sequence",
           "smartlead_get_campaign_sequence",
           "smartlead_update_campaign_sequence",
           "smartlead_delete_campaign_sequence",
           "smartlead_add_email_account_to_campaign",
           "smartlead_update_email_account_in_campaign",
           "smartlead_delete_email_account_from_campaign",
           "smartlead_add_lead_to_campaign",
           "smartlead_update_lead_in_campaign",
           "smartlead_delete_lead_from_campaign"
         ],
         "timeout": 300
       }
     }
   }

2. Using Supergateway on the Client-Side (SSE-to-stdio bridge): If your MCP client expects to launch a local command that communicates via stdio (standard input/output), you can use another Supergateway instance locally on the client's machine to bridge the remote SSE connection back to stdio.

   Example mcp.json or similar client configuration for the bridge:

   {
     "mcpServers": {
       "smartlead_remote_via_bridge": {
         "command": "npx",
         "args": [
           "-y",
           "supergateway",
           "--sse", "https://YOUR_RAILWAY_DEPLOYMENT_URL", // Replace with your actual Railway base URL (without /sse)
           // Supergateway will append /sse by default
           "--logLevel", "info" // Optional: for debugging Supergateway on the client
         ],
         "disabled": false,
         "alwaysAllow": [ /* ... list of Smartlead tools as above ... */ ]
       }
     }
   }

Original Features (from base Smartlead MCP Server)

• Create new campaigns

• Update campaign schedule settings

• Update campaign general settings

• Get campaign details

• List all campaigns with filtering options

• Manage campaign email sequences (save, get, update, delete)

• Manage email accounts in campaigns (add, update, delete)

• Manage leads in campaigns (add, update, delete)

Local Development Setup (without Docker/Supergateway)

1. Clone the repository

2. Install dependencies:

   npm install

3. Create a .env file (e.g., from .env.example) and add your Smartlead API key:

   SMARTLEAD_API_KEY=your_api_key_here

4. Build the project:

   npm run build

5. Start the server directly (stdio mode):

   npm start 
   # or node dist/index.js

Example Local mcp.json for stdio mode (original setup)

{
  "mcpServers": {
    "smartlead_local_stdio": {
      "command": "node",
      // Adjust path to your local built server:
      "args": ["FULL_PATH_TO_YOUR_PROJECT/smartlead-mcp-server/dist/index.js"], 
      "env": {
        "SMARTLEAD_API_KEY": "your_api_key_here"
      },
      "disabled": false,
      "alwaysAllow": [ /* ... list of Smartlead tools ... */ ]
    }
  }
}

Available Tools

(This section lists the tools provided by the server. Refer to the original README sections for detailed parameters, or use MCP introspection if available.)

Campaign Management

• smartlead_create_campaign

• smartlead_update_campaign_schedule

• smartlead_update_campaign_settings

• smartlead_get_campaign

• smartlead_list_campaigns

Campaign Sequence Management

• smartlead_save_campaign_sequence

• smartlead_get_campaign_sequence

• smartlead_update_campaign_sequence

• smartlead_delete_campaign_sequence

Email Account Management in Campaigns

• smartlead_add_email_account_to_campaign

• smartlead_update_email_account_in_campaign

• smartlead_delete_email_account_from_campaign

Lead Management in Campaigns

• smartlead_add_lead_to_campaign

• smartlead_update_lead_in_campaign

• smartlead_delete_lead_from_campaign

Credits

Based on: https://github.com/lkm1developer/smartlead-mcp-server

License

MIT