Bun SSE Transport for MCP

Bun SSE Transport for MCP

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.

Category
Visit Server

README

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.

Recommended Servers

playwright-mcp

playwright-mcp

A Model Context Protocol server that enables LLMs to interact with web pages through structured accessibility snapshots without requiring vision models or screenshots.

Official
Featured
TypeScript
Magic Component Platform (MCP)

Magic Component Platform (MCP)

An AI-powered tool that generates modern UI components from natural language descriptions, integrating with popular IDEs to streamline UI development workflow.

Official
Featured
Local
TypeScript
Audiense Insights MCP Server

Audiense Insights MCP Server

Enables interaction with Audiense Insights accounts via the Model Context Protocol, facilitating the extraction and analysis of marketing insights and audience data including demographics, behavior, and influencer engagement.

Official
Featured
Local
TypeScript
VeyraX MCP

VeyraX MCP

Single MCP tool to connect all your favorite tools: Gmail, Calendar and 40 more.

Official
Featured
Local
graphlit-mcp-server

graphlit-mcp-server

The Model Context Protocol (MCP) Server enables integration between MCP clients and the Graphlit service. Ingest anything from Slack to Gmail to podcast feeds, in addition to web crawling, into a Graphlit project - and then retrieve relevant contents from the MCP client.

Official
Featured
TypeScript
Kagi MCP Server

Kagi MCP Server

An MCP server that integrates Kagi search capabilities with Claude AI, enabling Claude to perform real-time web searches when answering questions that require up-to-date information.

Official
Featured
Python
E2B

E2B

Using MCP to run code via e2b.

Official
Featured
Neon Database

Neon Database

MCP server for interacting with Neon Management API and databases

Official
Featured
Exa Search

Exa Search

A Model Context Protocol (MCP) server lets AI assistants like Claude use the Exa AI Search API for web searches. This setup allows AI models to get real-time web information in a safe and controlled way.

Official
Featured
Qdrant Server

Qdrant Server

This repository is an example of how to create a MCP server for Qdrant, a vector search engine.

Official
Featured