title: Gemini CLI to API Proxy emoji: 🤖 colorFrom: blue colorTo: purple sdk: docker pinned: false license: mit app_port: 7860

Gemini CLI to API Proxy (geminicli2api)

A FastAPI-based proxy server that converts the Gemini CLI tool into both OpenAI-compatible and native Gemini API endpoints. This allows you to leverage Google's free Gemini API quota through familiar OpenAI API interfaces or direct Gemini API calls.

🚀 Features

• OpenAI-Compatible API: Drop-in replacement for OpenAI's chat completions API
• Native Gemini API: Direct proxy to Google's Gemini API
• Streaming Support: Real-time streaming responses for both API formats
• Multimodal Support: Text and image inputs
• Authentication: Multiple auth methods (Bearer, Basic, API key)
• Google Search Grounding: Enable Google Search for grounded responses using -search models.
• Thinking/Reasoning Control: Control Gemini's thinking process with -nothinking and -maxthinking models.
• Docker Ready: Containerized for easy deployment
• Hugging Face Spaces: Ready for deployment on Hugging Face

🔧 Environment Variables

Required

• GEMINI_AUTH_PASSWORD: Authentication password for API access

Optional Credential Sources (choose one)

• GEMINI_CREDENTIALS: JSON string containing Google OAuth credentials
• GOOGLE_APPLICATION_CREDENTIALS: Path to Google OAuth credentials file
• GOOGLE_CLOUD_PROJECT: Google Cloud project ID
• GEMINI_PROJECT_ID: Alternative project ID variable

Example Credentials JSON

{
  "client_id": "your-client-id",
  "client_secret": "your-client-secret", 
  "token": "your-access-token",
  "refresh_token": "your-refresh-token",
  "scopes": ["https://www.googleapis.com/auth/cloud-platform"],
  "token_uri": "https://oauth2.googleapis.com/token"
}

📡 API Endpoints

OpenAI-Compatible Endpoints

• POST /v1/chat/completions - Chat completions (streaming & non-streaming)
• GET /v1/models - List available models

Native Gemini Endpoints

• GET /v1beta/models - List Gemini models
• POST /v1beta/models/{model}:generateContent - Generate content
• POST /v1beta/models/{model}:streamGenerateContent - Stream content
• All other Gemini API endpoints are proxied through

Utility Endpoints

• GET /health - Health check for container orchestration

🔐 Authentication

The API supports multiple authentication methods:

1. Bearer Token: Authorization: Bearer YOUR_PASSWORD
2. Basic Auth: Authorization: Basic base64(username:YOUR_PASSWORD)
3. Query Parameter: ?key=YOUR_PASSWORD
4. Google Header: x-goog-api-key: YOUR_PASSWORD

🐳 Docker Usage

# Build the image
docker build -t geminicli2api .

# Run on default port 8888 (compatibility)
docker run -p 8888:8888 \
  -e GEMINI_AUTH_PASSWORD=your_password \
  -e GEMINI_CREDENTIALS='{"client_id":"...","token":"..."}' \
  -e PORT=8888 \
  geminicli2api

# Run on port 7860 (Hugging Face compatible)
docker run -p 7860:7860 \
  -e GEMINI_AUTH_PASSWORD=your_password \
  -e GEMINI_CREDENTIALS='{"client_id":"...","token":"..."}' \
  -e PORT=7860 \
  geminicli2api

Docker Compose

# Default setup (port 8888)
docker-compose up -d

# Hugging Face setup (port 7860)
docker-compose --profile hf up -d geminicli2api-hf

🤗 Hugging Face Spaces

This project is configured for Hugging Face Spaces deployment:

1. Fork this repository
2. Create a new Space on Hugging Face
3. Connect your repository
4. Set the required environment variables in Space settings:
   • GEMINI_AUTH_PASSWORD
   • GEMINI_CREDENTIALS (or other credential source)

The Space will automatically build and deploy using the included Dockerfile.

📝 OpenAI API Example

import openai

# Configure client to use your proxy
client = openai.OpenAI(
    base_url="http://localhost:8888/v1",  # or 7860 for HF
    api_key="your_password"  # Your GEMINI_AUTH_PASSWORD
)

# Use like normal OpenAI API
response = client.chat.completions.create(
    model="gemini-2.5-pro-maxthinking",
    messages=[
        {"role": "user", "content": "Explain the theory of relativity in simple terms."}
    ],
    stream=True
)

# Separate reasoning from the final answer
for chunk in response:
    if chunk.choices[0].delta.reasoning_content:
        print(f"Thinking: {chunk.choices[0].delta.reasoning_content}")
    if chunk.choices[0].delta.content:
        print(chunk.choices[0].delta.content, end="")

🔧 Native Gemini API Example

import requests

headers = {
    "Authorization": "Bearer your_password",
    "Content-Type": "application/json"
}

data = {
    "contents": [
        {
            "role": "user",
            "parts": [{"text": "Explain the theory of relativity in simple terms."}]
        }
    ],
    "thinkingConfig": {
        "thinkingBudget": 32768,
        "includeThoughts": True
    }
}

response = requests.post(
    "http://localhost:8888/v1beta/models/gemini-2.5-pro:generateContent",  # or 7860 for HF
    headers=headers,
    json=data
)

print(response.json())

🎯 Supported Models

Base Models

• gemini-2.5-pro
• gemini-2.5-flash
• gemini-1.5-pro
• gemini-1.5-flash
• gemini-1.0-pro

Model Variants

The proxy automatically creates variants for gemini-2.5-pro and gemini-2.5-flash models:

• -search: Appends -search to a model name to enable Google Search grounding.
  • Example: gemini-2.5-pro-search
• -nothinking: Appends -nothinking to minimize reasoning steps.
  • Example: gemini-2.5-flash-nothinking
• -maxthinking: Appends -maxthinking to maximize the reasoning budget.
  • Example: gemini-2.5-pro-maxthinking

📄 License

MIT License - see LICENSE file for details.

🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.