mcp-proxy
A MCP server which proxies requests to a remote MCP server over streamable HTTP or SSE.
Decision gist · record as of 2026-08-14
Yes. mcp-proxy solves a real transport compatibility problem for MCP ecosystems with low install friction, active maintenance, permissive licensing, and no known vulnerabilities. Install it if you need to bridge stdio and HTTP-based MCP communication or expose local servers remotely.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later.
- For mode 2, the local MCP server command must be specified after the proxy arguments.
- Low friction: pure Python wheel with only three runtime dependencies (httpx-auth, mcp, uvicorn).
License · maintenance · safety
permissive license (permissive) — MIT License permits unrestricted use, modification, and distribution with minimal restrictions—suitable for commercial and open-source projects alike.
last release 2026-05-14 (92 days) · last repo commit 2026-07-20 · 2,707 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 1,619,879 downloads/mo, #3,712 on PyPI
Alternatives
Verify before relying
pip install mcp-proxy
# Mode 1: Proxy stdio to remote SSE server
mcp-proxy http://example.io/sse
# Mode 2: Expose local stdio server over SSE
mcp-proxy --sse-port 8080 'local-command'- Whether OAuth2 authentication (--client-id, --client-secret, --token-url) is fully tested and production-ready.
- Performance characteristics under high-concurrency SSE connections.
- Compatibility with all MCP server implementations beyond the documented examples.
What it is and what it does
mcp-proxy is a transport adapter for the Model Context Protocol that allows clients and servers to communicate across incompatible network protocols. It operates in two modes: forwarding stdio connections from local clients (like Claude Desktop) to remote MCP servers over SSE or Streamable HTTP, or exposing local stdio-based MCP servers as remote SSE endpoints. This is useful when a client natively supports only stdio but needs to reach a remote server, or when a local server needs to be accessible over HTTP.
The tool is built on httpx-auth, mcp, and uvicorn, and is designed to be configured either as a command-line invocation or through configuration files. It supports optional authentication via API tokens or OAuth2, custom headers, CORS policies, and environment variable injection for spawned servers. The package is actively maintained, supports modern Python versions (3.10–3.14), and carries no known security vulnerabilities.
Use it for
- Enable Claude Desktop to connect to remote MCP servers that expose only SSE endpoints, bridging the stdio-to-SSE gap.
- Expose a local stdio-based MCP server to remote LLM clients over HTTP without modifying the server itself.
- Route MCP traffic through an authentication layer (OAuth2 or bearer tokens) for secure remote access.
- Run multiple named MCP servers behind a single proxy endpoint with dynamic server selection.
- Deploy MCP servers in containerized environments where stdio-only communication is impractical.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
mcp-proxy solves a real transport compatibility problem for MCP ecosystems with low install friction, active maintenance, permissive licensing, and no known vulnerabilities. Install it if you need to bridge stdio and HTTP-based MCP communication or expose local servers remotely.
Install
mcp-proxy on PyPI
Before you install
Low friction: pure Python wheel with only three runtime dependencies (httpx-auth, mcp, uvicorn). Active maintenance with recent commits and 2707 GitHub stars. Supports Python 3.10 through 3.14.
Requires Python 3.10 or later. For mode 2, the local MCP server command must be specified after the proxy arguments.
License in practice
MIT License permits unrestricted use, modification, and distribution with minimal restrictions—suitable for commercial and open-source projects alike.
Quickstart
pip install mcp-proxy
# Mode 1: Proxy stdio to remote SSE server
mcp-proxy http://example.io/sse
# Mode 2: Expose local stdio server over SSE
mcp-proxy --sse-port 8080 'local-command'Verify before relying
- Whether OAuth2 authentication (--client-id, --client-secret, --token-url) is fully tested and production-ready.
- Performance characteristics under high-concurrency SSE connections.
- Compatibility with all MCP server implementations beyond the documented examples.
Package facts
| License | permissive license permissive |
| Python support | Supports the current Python release >=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 3 packageshttpx-authmcpuvicorn |
| Maintenance | Actively maintained 92 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 1,619,879 / month, #3,712 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 4 - BetaEnvironment :: ConsoleIntended Audience :: DevelopersIntended Audience :: Information TechnologyIntended Audience :: System AdministratorsLicense :: OSI Approved :: MIT LicenseOperating System :: MacOSOperating System :: POSIX :: LinuxOperating System :: UnixProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3 :: OnlyProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Topic :: Software Development :: Libraries :: Python ModulesTopic :: UtilitiesTyping :: Typed |
Evidence: mcp_proxy-0.12.0-py3-none-any.whl
Tags
Let your AI agent find packages like this
Example. Real query, live index.
You found this page by searching. An agent finds it by wishing: SkillFed indexes 14,416 PyPI packages by what they can do, searchable in plain language.
wish › “MCP server transport proxy”
- mcp-proxymcp-proxy bridges Model Context Protocol (MCP) servers and clients…
- mcpoExposes MCP (Model Context Protocol) servers as OpenAPI-compatible…
- duckduckgo-mcp-serverProvides web search and content fetching through DuckDuckGo as a…
Give your agent the search over MCP, or paste the wish link into any chat.
More Python Modules packages
Converts domain names between Unicode and ASCII-compatible encoding (Punycode) according to IDNA 2008 and Unicode Technical Standard 46, with security validation and broader script coverage than the standard library.
Install it if you work with internationalized domain names, need to validate domains, or use HTTP clients that depend on it transitively.
Setuptools is a Python build backend and package management tool that handles building, distributing, and installing Python packages, including support for C/C++ extension modules.
PyYAML parses and emits YAML 1.1 data format, enabling serialization and deserialization of configuration files and Python objects to and from human-readable YAML text.
Pydantic validates Python data structures against type hints, coercing and checking input at runtime to ensure it matches a declared schema.
Provides reusable metadata objects for use with PEP-593 `typing.Annotated` to express common constraints like bounds, collection sizes, and predicates on types.
Install it if you use or build libraries that need to express type constraints in a standardized, inspectable way—or if you want to annotate your own types with…
Provides runtime tools to inspect and introspect Python type annotations, enabling programmatic examination of type hints at execution time.
See also markitdown-mcp · mcp-proxy-for-aws · mcp · arcade-mcp-server · mcpo · excel-mcp-server · mcp-server-fetch · duckduckgo-mcp-server · wikipedia-mcp · llama-index-tools-mcp