Resend MCP Server
Allows sending emails through the Resend service using a standardized Model Context Protocol (MCP) interface, with TypeScript support.
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README
Resend MCP Server
A Model Context Protocol (MCP) server implementation for the Resend email service.
Features
- Send emails using Resend through a standardized MCP interface
- TypeScript support
Prerequisites
- A Resend API key (get one at resend.com)
- Node.js 18 or later
Installation
- Clone the repository
- Install dependencies:
npm install
Configuration
Create a .env file in the root directory with your Resend API key:
RESEND_API_KEY=your_api_key_here
PORT=3000 # Optional, defaults to 3000
Development Status
The server implementation is currently blocked by TypeScript type issues with the MCP SDK. The following issues need to be resolved:
- The
Serverclass from@modelcontextprotocol/sdkis not properly exposing its request handling methods in the TypeScript types. - The exact method name for handling requests needs to be determined (tried:
handleRequest,handle,receiveMessage,receive,processRequest).
Next Steps
- Check the MCP SDK documentation or source code for the correct method name
- Update the TypeScript types in the SDK if they are incorrect
- Consider using JavaScript temporarily until the types are fixed
Usage
Development
bun run dev
Production
bun run start
Build
bun run build
API
The server exposes the following MCP function:
send-email
Sends an email using Resend.
Parameters:
from(required): Sender email addressto(required): Recipient email addresssubject(required): Email subjecthtml(optional): Email content in HTML formattext(optional): Email content in plain text format
Example request:
{
"method": "send-email",
"params": {
"from": "you@example.com",
"to": "recipient@example.com",
"subject": "Hello from MCP",
"html": "<h1>Hello</h1><p>This is a test email.</p>"
}
}
License
MIT
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