Copilot Proxy

A simple HTTP proxy that exposes your GitHub Copilot free quota as an OpenAI-compatible API.

Why?

• You have a lot of free quota on GitHub Copilot, you want to use it like OpenAI-compatible APIs.
• You want the computing power of GitHub Copilot beyond VS Code.
• You want to use modern models like gpt-4.1 free.
• You have multiple GitHub accounts and the free quota is just wasted.
• Host LLM locally and leave the computing remotely.

Features

• Proxies requests to https://api.githubcopilot.com
  • Support endpoints: /chat/completions, /models
• User-friendly admin UI:
  • Log in with GitHub and generate tokens
  • Add tokens manually
  • Manage multiple tokens with ease
  • View chat message and code completion usage statistics
• Supports Langfuse for LLM observability

How to use

• Start the proxy server
  • Option 1: Use Docker

    docker run -p 3000:3000 ghcr.io/hankchiutw/copilot-proxy:latest

  • Option 2: Use pnpx(recommended) or npx

    pnpx copilot-proxy

• Browse http://localhost:3000 to generate the token by following the instructions.
  • Or add your own token manually.
• Set a default token.
• Your OpenAI-compatible API base URL is http://localhost:3000/api
  • You can test it like this: (no need authorization header since you've set a default token!)

  curl --request POST --url http://localhost:3000/api/chat/completions --header 'content-type: application/json' \
  --data '{
      "model": "gpt-4",
      "messages": [{"role": "user", "content": "Hi"}]
  }'

  • You still can set a token in the request header authorization: Bearer <token> and it will override the default token.
• (Optional) Use environment variable PORT for setting different port other than 3000.

Available environment variables

• PORT: Port number to listen on (default: 3000)
• LOG_LEVEL: Log level (default: info)
• STORAGE_DIR: Directory to store tokens (default: .storage)
  • Be sure to backup this directory if you want to keep your tokens.
  • Note: even if you delete the storage folder, the token is still functional from GitHub Copilot. (That is how Github Copilot works at the moment.)
• Langfuse is supported, see official documentation for more details.
  • LANGFUSE_SECRET_KEY: Langfuse secret key
  • LANGFUSE_PUBLIC_KEY: Langfuse public key
  • LANGFUSE_BASEURL: Langfuse base URL (default: https://cloud.langfuse.com)

Advanced usage

• Dummy token _ to make copilot-proxy use the default token.
  • In most cases, the default token just works without 'Authorization' header. But if your LLM client requires a non-empty API key, you can use the special dummy token _ to make copilot-proxy use the default token.
• Tips for using docker:
  • Mount the storage folder from host to persist the tokens and use .env file to set environment variables

    docker run -p 3000:3000 -v /path/to/storage:/app/.storage -v /path/to/.env:/app/.env ghcr.io/hankchiutw/copilot-proxy:latest

Use cases

• Use with LLM CLI locally.
• Chat with GitHub Copilot by Open WebUI.

Requirements

• Node.js 22 or higher

References

• https://www.npmjs.com/package/@github/copilot-language-server
• https://github.com/B00TK1D/copilot-api
• https://github.com/ericc-ch/copilot-api
• https://hub.docker.com/r/mouxan/copilot

Licensed under the MIT License.