Resend MCP Server Integration

What does “Resend” MCP Server do?

The Resend MCP Server acts as a bridge between AI assistants and the Resend email API, enabling seamless integration of email-sending capabilities into AI-powered workflows. By exposing the functionality of the Resend API through the Model Context Protocol (MCP), this server allows AI agents to send emails, manage email content, and interact with email-related resources programmatically. This integration is particularly valuable for automating notifications, transactional emails, and communication processes within development environments, thereby enhancing productivity and enabling complex automated workflows involving email communication.

List of Prompts

No prompt templates are mentioned in the available files or documentation.

List of Resources

No resources are explicitly listed in the available files or documentation.

List of Tools

No tools are explicitly listed in the available files or documentation, including server.py.

Use Cases of this MCP Server

• Automated Email Notifications: Developers can leverage the Resend MCP Server to send automated notifications to users or teams based on specific triggers or events in their applications.
• Transactional Emails: Seamless integration with the Resend API allows for programmatic sending of transactional emails, such as password resets, order confirmations, and welcome messages.
• Workflow Communication: The server can be used to facilitate communication within automated workflows, such as sending status updates or alerts directly from scripts or bots.
• Bulk Emailing in DevOps: Useful for sending bulk updates or alerts to multiple stakeholders during deployment or system monitoring events.
• Integration Testing: Developers can automate the process of sending test emails as part of their integration and end-to-end testing pipelines.

How to set it up

Windsurf

1. Prerequisites: Ensure Node.js is installed on your system.
2. Locate configuration: Open the Windsurf configuration file.
3. Add the Resend MCP Server:

   {
     "mcpServers": {
       "resend": {
         "command": "npx",
         "args": ["@klavis/mcp-server-resend@latest"]
       }
     }
   }
   

4. Save and restart: Save the configuration and restart Windsurf.
5. Verify: Check the Windsurf logs to confirm the Resend MCP Server is running.

Claude

1. Prerequisites: Ensure Node.js is installed.
2. Locate configuration: Open the Claude configuration file.
3. Add the Resend MCP Server:

   {
     "mcpServers": {
       "resend": {
         "command": "npx",
         "args": ["@klavis/mcp-server-resend@latest"]
       }
     }
   }
   

4. Save and restart: Save your changes and restart Claude.
5. Verify: Ensure the MCP server appears as active.

Cursor

1. Prerequisites: Make sure Node.js is available.
2. Locate configuration: Edit the Cursor configuration file.
3. Add the Resend MCP Server:

   {
     "mcpServers": {
       "resend": {
         "command": "npx",
         "args": ["@klavis/mcp-server-resend@latest"]
       }
     }
   }
   

4. Save and restart: Save and restart Cursor.
5. Verify: Confirm operation via logs or UI.

Cline

1. Prerequisites: Node.js must be installed.
2. Locate configuration: Open the Cline configuration file.
3. Add the Resend MCP Server:

   {
     "mcpServers": {
       "resend": {
         "command": "npx",
         "args": ["@klavis/mcp-server-resend@latest"]
       }
     }
   }
   

4. Save and restart: Save and restart Cline.
5. Verify: Check that the Resend MCP Server is listed as running.

Securing API Keys

Store API keys in environment variables rather than in configuration files. Example:

{
  "mcpServers": {
    "resend": {
      "command": "npx",
      "args": ["@klavis/mcp-server-resend@latest"],
      "env": {
        "RESEND_API_KEY": "${RESEND_API_KEY}"
      },
      "inputs": {
        "apiKey": "${RESEND_API_KEY}"
      }
    }
  }
}

How to use this MCP inside flows

Using MCP in FlowHunt

To integrate MCP servers into your FlowHunt workflow, start by adding the MCP component to your flow and connecting it to your AI agent:

Click on the MCP component to open the configuration panel. In the system MCP configuration section, insert your MCP server details using this JSON format:

{
  "resend": {
    "transport": "streamable_http",
    "url": "https://yourmcpserver.example/pathtothemcp/url"
  }
}

Once configured, the AI agent is now able to use this MCP as a tool with access to all its functions and capabilities. Remember to change “resend” to whatever the actual name of your MCP server is and replace the URL with your own MCP server URL.

Overview

Our opinion

Based on the available documentation, the Resend MCP Server provides clear setup instructions and addresses security for API keys, but lacks details on prompts, resources, and tools. It appears to be a useful integration for email-related workflows, but the absence of explicit MCP features such as tools and resources may limit its out-of-the-box functionality.

Score: 3/10 (Basic documentation and setup, but missing core MCP features.)

MCP Score