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Bun SSE Transport for MCP

by tigranbs
GitHub
TypeScript
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Integrations

  • Provides a Bun-specific implementation of Server-Sent Events (SSE) transport for MCP servers, leveraging Bun's runtime and streaming capabilities for efficient real-time communication between server and client.

bun-mcp-sse-transport

A Server-Sent Events (SSE) transport implementation for the Model Context Protocol (MCP) using Bun.

Overview

This package provides a Bun-specific implementation of SSE transport for MCP servers. It enables real-time, one-way communication from server to client using the SSE protocol, with client-to-server communication handled via HTTP POST requests.

Key Features

  • Built specifically for Bun runtime
  • Implements the MCP transport interface
  • Manages SSE connections with proper headers
  • Handles incoming JSON-RPC messages
  • Simple integration with Bun.serve

Quick Usage

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js"; import { BunSSEServerTransport } from "bun-mcp-sse-transport"; // Create SSE transport const transport = new BunSSEServerTransport("/messages"); // Connect to MCP server const server = new McpServer({ name: "MyServer", version: "1.0.0" }); server.connect(transport); // Set up Bun HTTP server Bun.serve({ port: 3000, routes: { "/sse": () => transport.createResponse(), "/messages": (req) => transport.handlePostMessage(req) } });

How It Works

  1. When a client connects to /sse, the server creates an SSE connection
  2. The server sends the endpoint URL where the client should POST messages
  3. The client sends JSON-RPC messages to the endpoint URL
  4. The server receives these messages and passes them to the MCP server
  5. The MCP server processes the messages and sends responses via the SSE connection

This implementation follows the MCP standard while leveraging Bun's streaming capabilities for efficient real-time communication.

This server cannot be installed

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security - not tested
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license - not found
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quality - not tested

remote-capable server

The server can be hosted and run remotely because it primarily relies on remote services or has no dependency on the local environment.

Enables real-time communication between client and server using Server-Sent Events (SSE) for the Model Context Protocol, specifically built for the Bun JavaScript runtime.

  1. Overview
    1. Key Features
      1. Quick Usage
        1. How It Works

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