Copilot API Proxy

Warning

This is a reverse-engineered proxy of GitHub Copilot API. It is not supported by GitHub, and may break unexpectedly. Use at your own risk.

Warning

GitHub Security Notice:
Excessive automated or scripted use of Copilot (including rapid or bulk requests, such as via automated tools) may trigger GitHub's abuse-detection systems.
You may receive a warning from GitHub Security, and further anomalous activity could result in temporary suspension of your Copilot access.

GitHub prohibits use of their servers for excessive automated bulk activity or any activity that places undue burden on their infrastructure.

Please review:

Use this proxy responsibly to avoid account restrictions.

Note: If you are using opencode, you do not need this project. Opencode supports GitHub Copilot provider out of the box.

Project Overview

A reverse-engineered proxy for the GitHub Copilot API that exposes it as an OpenAI and Anthropic compatible service. This allows you to use GitHub Copilot with any tool that supports the OpenAI Chat Completions API or the Anthropic Messages API, including to power Claude Code.

Features

OpenAI & Anthropic Compatibility: Exposes GitHub Copilot as an OpenAI-compatible (/v1/chat/completions, /v1/models, /v1/embeddings) and Anthropic-compatible (/v1/messages) API.
Claude Code Integration: Easily configure and launch Claude Code to use Copilot as its backend with a simple command-line flag (--claude-code).
Usage Dashboard: A web-based dashboard to monitor your Copilot API usage, view quotas, and see detailed statistics.
Rate Limit Control: Manage API usage with rate-limiting options (--rate-limit) and a waiting mechanism (--wait) to prevent errors from rapid requests.
Manual Request Approval: Manually approve or deny each API request for fine-grained control over usage (--manual).
Token Visibility: Option to display GitHub and Copilot tokens during authentication and refresh for debugging (--show-token).
Flexible Authentication: Authenticate interactively or provide a GitHub token directly, suitable for CI/CD environments.
Support for Different Account Types: Works with individual, business, and enterprise GitHub Copilot plans.

Demo

copilot-api-demo.mp4

Prerequisites

Node.js 20 or newer for npx usage
GitHub account with Copilot subscription (individual, business, or enterprise)
Bun (>= 1.2.x) only when developing from source

Installation

Use npx to run the published npm package without a global install. The source is hosted at https://github.com/maomaoGod/copilot-api, and the package is published under the @maomaogod npm scope.

macOS/Linux:

npx @maomaogod/copilot-api start

Windows PowerShell:

npx @maomaogod/copilot-api start

Windows CMD:

npx @maomaogod/copilot-api start

For local development, install dependencies with Bun:

bun install

Using with Docker

Build image

docker build -t copilot-api .

Run the container

# Create a directory on your host to persist the GitHub token and related data
mkdir -p ./copilot-data

# Run the container with a bind mount to persist the token
# This ensures your authentication survives container restarts

docker run -p 4141:4141 -v $(pwd)/copilot-data:/root/.local/share/copilot-api copilot-api

Note: The GitHub token and related data will be stored in copilot-data on your host. This is mapped to /root/.local/share/copilot-api inside the container, ensuring persistence across restarts.

Docker with Environment Variables

You can pass the GitHub token directly to the container using environment variables:

# Build with GitHub token
docker build --build-arg GH_TOKEN=your_github_token_here -t copilot-api .

# Run with GitHub token
docker run -p 4141:4141 -e GH_TOKEN=your_github_token_here copilot-api

# Run with additional options
docker run -p 4141:4141 -e GH_TOKEN=your_token copilot-api start --verbose --port 4141

Docker Compose Example

version: "3.8"
services:
  copilot-api:
    build: .
    ports:
      - "4141:4141"
    environment:
      - GH_TOKEN=your_github_token_here
    restart: unless-stopped

The Docker image includes:

Multi-stage build for optimized image size
Non-root user for enhanced security
Health check for container monitoring
Pinned base image version for reproducible builds

Using with npx

Run the project directly from the Voyah Git repository:

npx @maomaogod/copilot-api start

With options:

npx @maomaogod/copilot-api start --port 8080

For authentication only:

npx @maomaogod/copilot-api auth

After global installation, you can also use the copilot-api command:

npm install -g @maomaogod/copilot-api
copilot-api start

Command Structure

Copilot API now uses a subcommand structure with these main commands:

start: Start the Copilot API server. This command will also handle authentication if needed.
auth: Run GitHub authentication flow without starting the server. This is typically used if you need to generate a token for use with the --github-token option, especially in non-interactive environments.
check-usage: Show your current GitHub Copilot usage and quota information directly in the terminal (no server required).
debug: Display diagnostic information including version, runtime details, file paths, and authentication status. Useful for troubleshooting and support.

Command Line Options

Start Command Options

The following command line options are available for the start command:

Option	Description	Default	Alias
--port	Port to listen on	4141	-p
--verbose	Enable verbose logging	false	-v
--account-type	Account type to use (individual, business, enterprise)	individual	-a
--manual	Enable manual request approval	false	none
--rate-limit	Rate limit in seconds between requests	none	-r
--wait	Wait instead of error when rate limit is hit	false	-w
--github-token	Provide GitHub token directly as a last resort; prefer `auth` because command-line tokens can be exposed in shell history and process lists	none	-g
--claude-code	Generate a command to launch Claude Code with Copilot API config	false	-c
--show-token	Show GitHub and Copilot tokens on fetch and refresh	false	none
--proxy-env	Initialize proxy from environment variables	false	none

Auth Command Options

Option	Description	Default	Alias
--verbose	Enable verbose logging	false	-v
--show-token	Show GitHub token on auth	false	none

Debug Command Options

Option	Description	Default	Alias
--json	Output debug info as JSON	false	none

API Endpoints

The server exposes several endpoints to interact with the Copilot API. It provides OpenAI-compatible endpoints and now also includes support for Anthropic-compatible endpoints, allowing for greater flexibility with different tools and services.

OpenAI Compatible Endpoints

These endpoints mimic the OpenAI API structure.

Endpoint	Method	Description
`POST /v1/chat/completions`	`POST`	Creates a model response for the given chat conversation.
`GET /v1/models`	`GET`	Lists the currently available models.
`POST /v1/embeddings`	`POST`	Creates an embedding vector representing the input text.

Anthropic Compatible Endpoints

These endpoints are designed to be compatible with the Anthropic Messages API.

Endpoint	Method	Description
`POST /v1/messages`	`POST`	Creates a model response for a given conversation.
`POST /v1/messages/count_tokens`	`POST`	Calculates the number of tokens for a given set of messages.

Web Search

The proxy supports bridge-style web search orchestration for non-streaming requests. When a request includes native hosted web search tools, the proxy can:

ask the model whether web search is needed
execute the configured search backend
inject the retrieved results as trusted context
ask the model for the final answer

Current status:

OpenAI-compatible web_search and web_search_preview are supported for chat completions
Anthropic web_search_20250305 requests are translated into the same hosted web search flow
stream: true with native web search returns a buffered synthetic chat-completion stream after the search workflow finishes; it is not true incremental upstream streaming
/responses routing with image input is not supported yet when the request is converted to Responses API format

`COPILOT_WEB_SEARCH_BACKEND`

Set COPILOT_WEB_SEARCH_BACKEND to choose how the search step is executed:

searxng: query a local or self-hosted SearXNG instance at http://localhost:8080
copilot-cli: use the local copilot chat --json command as the search executor
copilot-http:<model>: execute search through /responses with web_search_preview using the specified Copilot model

If this variable is unset or malformed, native web search requests will fail because no search backend is configured.

Smoke test

Example OpenAI-compatible non-streaming smoke test:

curl http://127.0.0.1:4141/v1/chat/completions \
  -H 'Content-Type: application/json' \
  -d '{
    "model": "gpt-4o",
    "messages": [{"role": "user", "content": "Search the web for the latest Bun release notes and summarize them in one sentence."}],
    "tools": [{"type": "web_search_preview"}]
  }'

Example Anthropic-compatible non-streaming smoke test:

curl http://127.0.0.1:4141/v1/messages \
  -H 'Content-Type: application/json' \
  -H 'x-api-key: dummy' \
  -H 'anthropic-version: 2023-06-01' \
  -d '{
    "model": "claude-sonnet-4.6",
    "max_tokens": 256,
    "messages": [{"role": "user", "content": "Search the web for the latest Bun release notes and summarize them in one sentence."}],
    "tools": [{"type": "web_search_20250305"}]
  }'

Usage Monitoring Endpoints

New endpoints for monitoring your Copilot usage and quotas.

Endpoint	Method	Description
`GET /usage`	`GET`	Get detailed Copilot usage statistics and quota information.

Example Usage

Using with npx:

# Basic usage with start command
npx @maomaogod/copilot-api start

# Run on custom port with verbose logging
npx @maomaogod/copilot-api start --port 8080 --verbose

# Use with a business plan GitHub account
npx @maomaogod/copilot-api start --account-type business

# Use with an enterprise plan GitHub account
npx @maomaogod/copilot-api start --account-type enterprise

# Enable manual approval for each request
npx @maomaogod/copilot-api start --manual

# Set rate limit to 30 seconds between requests
npx @maomaogod/copilot-api start --rate-limit 30

# Wait instead of error when rate limit is hit
npx @maomaogod/copilot-api start --rate-limit 30 --wait

# Run the auth flow instead of passing tokens on the command line
npx @maomaogod/copilot-api auth

# Run only the auth flow
npx @maomaogod/copilot-api auth

# Run auth flow with verbose logging
npx @maomaogod/copilot-api auth --verbose

# Show your Copilot usage/quota in the terminal (no server needed)
npx @maomaogod/copilot-api check-usage

# Display debug information for troubleshooting
npx @maomaogod/copilot-api debug

# Display debug information in JSON format
npx @maomaogod/copilot-api debug --json

# Initialize proxy from environment variables (HTTP_PROXY, HTTPS_PROXY, etc.)
npx @maomaogod/copilot-api start --proxy-env

Using the Usage Viewer

After starting the server, a local usage endpoint will be displayed in your console. You can query this endpoint directly or point a trusted local dashboard at it.

Start the server. For example, using npx:
```
npx @maomaogod/copilot-api start
```
The server will output http://localhost:4141/usage. Open that endpoint directly or configure a trusted dashboard to read it.

The dashboard provides a user-friendly interface to view your Copilot usage data:

API Endpoint URL: The dashboard is pre-configured to fetch data from your local server endpoint via the URL query parameter. You can change this URL to point to any other compatible API endpoint.
Fetch Data: Click the "Fetch" button to load or refresh the usage data. The dashboard will automatically fetch data on load.
Usage Quotas: View a summary of your usage quotas for different services like Chat and Completions, displayed with progress bars for a quick overview.
Detailed Information: See the full JSON response from the API for a detailed breakdown of all available usage statistics.
URL-based Configuration: You can also specify the API endpoint directly in the URL using an endpoint query parameter. This is useful for bookmarks or sharing links.

Using with Claude Code

This proxy can be used to power Claude Code, an experimental conversational AI assistant for developers from Anthropic.

There are two ways to configure Claude Code to use this proxy:

Interactive Setup with `--claude-code` flag

To get started, run the start command with the --claude-code flag:

npx @maomaogod/copilot-api start --claude-code

You will be prompted to select a primary model and a "small, fast" model for background tasks. After selecting the models, a command will be copied to your clipboard. This command sets the necessary environment variables for Claude Code to use the proxy.

Paste and run this command in a new terminal to launch Claude Code.

Manual Configuration with `settings.json`

Alternatively, you can configure Claude Code by creating a .claude/settings.json file in your project's root directory. This file should contain the environment variables needed by Claude Code. This way you don't need to run the interactive setup every time.

Here is an example .claude/settings.json file:

{
  "env": {
    "ANTHROPIC_BASE_URL": "http://localhost:4141",
    "ANTHROPIC_AUTH_TOKEN": "dummy",
    "ANTHROPIC_MODEL": "gpt-4.1",
    "ANTHROPIC_DEFAULT_SONNET_MODEL": "gpt-4.1",
    "ANTHROPIC_SMALL_FAST_MODEL": "gpt-4.1",
    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "gpt-4.1",
    "DISABLE_NON_ESSENTIAL_MODEL_CALLS": "1",
    "CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC": "1"
  },
  "permissions": {
    "deny": [
      "WebSearch"
    ]
  }
}

You can find more options here: Claude Code settings

You can also read more about IDE integration here: Add Claude Code to your IDE

Running from Source

The project can be run from source in several ways:

Development Mode

bun run dev

Production Mode

bun run start

Usage Tips

To avoid hitting GitHub Copilot's rate limits, you can use the following flags:
- --manual: Enables manual approval for each request, giving you full control over when requests are sent.
- --rate-limit <seconds>: Enforces a minimum time interval between requests. For example, copilot-api start --rate-limit 30 will ensure there's at least a 30-second gap between requests.
- --wait: Use this with --rate-limit. It makes the server wait for the cooldown period to end instead of rejecting the request with an error. This is useful for clients that don't automatically retry on rate limit errors.
If you have a GitHub business or enterprise plan account with Copilot, use the --account-type flag (e.g., --account-type business). See the official documentation for more details.

Name		Name	Last commit message	Last commit date
Latest commit History 420 Commits
.github		.github
.vscode		.vscode
pages		pages
src		src
tests		tests
.dockerignore		.dockerignore
.gitignore		.gitignore
AGENTS.md		AGENTS.md
CLAUDE.md		CLAUDE.md
Dockerfile		Dockerfile
LICENSE		LICENSE
README.md		README.md
bun.lock		bun.lock
entrypoint.sh		entrypoint.sh
eslint.config.js		eslint.config.js
opencode.json		opencode.json
package.json		package.json
start.bat		start.bat
tsconfig.json		tsconfig.json
tsdown.config.ts		tsdown.config.ts

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Copilot API Proxy

Project Overview

Features

Demo

Prerequisites

Installation

Using with Docker

Docker with Environment Variables

Docker Compose Example

Using with npx

Command Structure

Command Line Options

Start Command Options

Auth Command Options

Debug Command Options

API Endpoints

OpenAI Compatible Endpoints

Anthropic Compatible Endpoints

Web Search

COPILOT_WEB_SEARCH_BACKEND

Smoke test

Usage Monitoring Endpoints

Example Usage

Using the Usage Viewer

Using with Claude Code

Interactive Setup with --claude-code flag

Manual Configuration with settings.json

Running from Source

Development Mode

Production Mode

Usage Tips

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`COPILOT_WEB_SEARCH_BACKEND`

Interactive Setup with `--claude-code` flag

Manual Configuration with `settings.json`

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