punkpeye/mcp-proxy

Score: 78.5 Rank #5

A TypeScript streamable HTTP and SSE proxy for MCP servers that use stdio transport.

Overview

punkpeye/mcp-proxy is a TypeScript MCP server licensed under BSD-2-Clause. A TypeScript streamable HTTP and SSE proxy for MCP servers that use stdio transport.

Ranked #5 out of 25632 indexed tools.

In the top 1% of all indexed tools.

Used by 1,280 other projects.

Has 21 contributors.

Actively maintained with commits in the last week.

Ecosystem

TypeScript BSD-2-Clause

Signal Breakdown

Stars 241

Freshness 2d ago

Issue Health 84%

Contributors 21

Dependents 1,280

Forks 45

Description Good

License BSD-2-Clause

How to Improve

Description low impact

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Details

Stars: 241
Forks: 45
Open Issues: 4
Closed Issues: 21
Contributors: 21
Dependents: 1,280
Language: TypeScript
License: BSD-2-Clause
Last Commit: 2d ago

Matched Queries

"mcp server""mcp-server"

From the README

# MCP Proxy

A TypeScript streamable HTTP and SSE proxy for [MCP](https://modelcontextprotocol.io/) servers that use `stdio` transport.

> [!NOTE]
> CORS is enabled by default with configurable options. See [CORS Configuration](#cors-configuration) for details.

> [!NOTE]
> For a Python implementation, see [mcp-proxy](https://github.com/sparfenyuk/mcp-proxy).

> [!NOTE]
> MCP Proxy is what [FastMCP](https://github.com/punkpeye/fastmcp) uses to enable streamable HTTP and SSE.

## Installation

```bash
npm install mcp-proxy
```

## Quickstart

### Command-line

MCP Proxy supports two invocation patterns:

**Simple usage (no mcp-proxy options):**

```bash
npx mcp-proxy npx -y @anthropic/mcp-server-filesystem /path
```

**With mcp-proxy options:**

```bash
npx mcp-proxy --port 8080 --shell -- tsx server.js
```

This starts a server and `stdio` server (`tsx server.js`). The server listens on port 8080 and `/mcp` (streamable HTTP) and `/sse` (SSE) endpoints, and forwards messages to the `std

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