Elysia MCP Server
Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@Elysia MCP Serverstart the MCP server on port 3001"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
MCP Server for Bun and Elysia
An implementation of the Model Context Protocol (MCP) server using Bun and the Elysia web framework. This project enables you to create high-performance MCP servers that expose resources, tools, and prompts to LLMs through a standardized interface.
Features
Server-Sent Events (SSE) transport implementation for Bun and Elysia
Complete MCP protocol support with resources, tools, and prompts
High-performance thanks to Bun's JavaScript runtime
TypeScript support with proper type definitions
Easy-to-use API for creating MCP-compatible servers
Related MCP server: MCP Boilerplate
Prerequisites
Bun installed on your system
Basic familiarity with TypeScript and Elysia
Installation
# Clone the repository
git clone <your-repo-url>
cd mcp-server
# Install dependencies
bun installUsage
Starting the server
# Start the server
bun start
# Start with hot reloading for development
bun devBuilding for production
# Build for production
bun run buildThis will create a minified Node.js-compatible build in the dist directory.
Development
Project Structure
src/index.ts- Main entry point for the serversrc/SSEElysiaTransport.ts- SSE transport implementation for Bun and Elysia
Creating an MCP Server
import { McpServer, ResourceTemplate } from "@modelcontextprotocol/sdk/server/mcp.js";
import { z } from "zod";
import { SSEElysiaTransport } from "./SSEElysiaTransport";
import { Elysia } from "elysia";
// Create MCP server
const server = new McpServer({
name: "my-mcp-server",
version: "1.0.0"
});
// Add resources, tools, and prompts
server.resource(
"example",
"example://resource",
async (uri) => ({
contents: [{
uri: uri.href,
text: "Example resource content"
}]
})
);
// Create Elysia app
const app = new Elysia()
.get("/", () => "MCP Server")
.get("/sse", async (context) => {
try {
// Create transport
const transport = new SSEElysiaTransport("/messages", context);
// Store transport
const sessionId = transport.sessionId;
// ... store transport in a map
// Connect to MCP server
await server.connect(transport);
return;
} catch (error) {
// Handle error
}
})
.post("/messages", async (context) => {
// Handle incoming messages
});
// Start server
app.listen(3001, () => {
console.log("MCP Server running at http://localhost:3001");
});Debugging
You can debug your MCP server using the MCP Inspector tool and connect through sse
npx @modelcontextprotocol/inspectorThis will open a web interface where you can:
List available resources, tools, and prompts
Test calling tools and retrieving resources
Inspect the communication between the client and server
Contributing
Contributions are welcome! Please feel free to submit a Pull Request.
License
This project is licensed under the MIT License - see the LICENSE file for details.
This server cannot be installed
Maintenance
Resources
Unclaimed servers have limited discoverability.
Looking for Admin?
If you are the server author, to access and configure the admin panel.
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