Transform Claude's web service into an API service, supporting image recognition, file upload, streaming transmission, thing output... The API supports access in the OpenAI format.

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NOTICE: ONLY PRO USER CAN USE ALL MODELS , FREE USER ONLY CAN USE claude-sonnet-4-20250514

• 🖼️ Image Recognition - Send images to Claude for analysis
• 📝 Automatic Conversation Management - Conversation can be automatically deleted after use
• 🌊 Streaming Responses - Get real-time streaming outputs from Claude
• 📁 File Upload Support - Upload long context
• 🧠 Thinking Process - Access Claude's step-by-step reasoning, support
• 🔄 Chat History Management - Control the length of conversation context , exceeding will upload file
• 🌐 Proxy Support - Route requests through your preferred proxy
• 🔐 API Key Authentication - Secure your API endpoints
• 🔁 Automatic Retry - Feature to automatically retry requests when request fail
• 🌐 Direct Proxy -let sk-ant-sid01* as key to use

• Go 1.23+ (for building from source)
• Docker (for containerized deployment)

docker run -d \
  -p 8080:8080 \
  -e SESSIONS=sk-ant-sid01-xxxx,sk-ant-sid01-yyyy \
  -e APIKEY=123 \
  -e CHAT_DELETE=true \
  -e MAX_CHAT_HISTORY_LENGTH=10000 \
  -e NO_ROLE_PREFIX=false \
  -e PROMPT_DISABLE_ARTIFACTS=false \
  -e ENABLE_MIRROR_API=false \
  -e MIRROR_API_PREFIX=/mirror \
  --name claude2api \
  ghcr.io/yushangxiao/claude2api:latest

Create a docker-compose.yml file:

version: '3'
services:
  claude2api:
    image: ghcr.io/yushangxiao/claude2api:latest
    container_name: claude2api
    ports:
      - "8080:8080"
    environment:
      - SESSIONS=sk-ant-sid01-xxxx,sk-ant-sid01-yyyy
      - ADDRESS=0.0.0.0:8080
      - APIKEY=123
      - PROXY=http://proxy:2080  # Optional
      - CHAT_DELETE=true
      - MAX_CHAT_HISTORY_LENGTH=10000
      - NO_ROLE_PREFIX=false
      - PROMPT_DISABLE_ARTIFACTS=true
      - ENABLE_MIRROR_API=false
      - MIRROR_API_PREFIX=/mirror
    restart: unless-stopped

Then run:

docker-compose up -d

You can deploy this project to Hugging Face Spaces with Docker:

1. Fork the Hugging Face Space at https://huggingface.co/spaces/rclon/claude2api
2. Configure your environment variables in the Settings tab
3. The Space will automatically deploy the Docker image

notice: In Hugging Face, /v1 might be blocked, you can use /hf/v1 instead.

# Clone the repository
git clone https://github.com/yushangxiao/claude2api.git
cd claude2api
cp .env.example .env  
vim .env  
# Build the binary
go build -o claude2api .

./claude2api

You can configure Claude2API using a config.yaml file in the application's root directory. If this file exists, it will be used instead of environment variables.

Example config.yaml:

# Sessions configuration
sessions:
  - sessionKey: "sk-ant-sid01-xxxx"
    orgID: ""
  - sessionKey: "sk-ant-sid01-yyyy"
    orgID: ""

# Server address
address: "0.0.0.0:8080"

# API authentication key
apiKey: "123"

# Other configuration options...
chatDelete: true
maxChatHistoryLength: 10000
noRolePrefix: false
promptDisableArtifacts: false
enableMirrorApi: false
mirrorApiPrefix: ""

A sample configuration file is provided as config.yaml.example in the repository.

If config.yaml doesn't exist, the application will use environment variables for configuration:

Environment Variable	Description	Default
SESSIONS	Comma-separated list of Claude API session keys	Required
ADDRESS	Server address and port	0.0.0.0:8080
APIKEY	API key for authentication	Required
PROXY	HTTP proxy URL	Optional
CHAT_DELETE	Whether to delete chat sessions after use	true
MAX_CHAT_HISTORY_LENGTH	Exceeding will text to file	10000
NO_ROLE_PREFIX	Do not add role in every message	false
PROMPT_DISABLE_ARTIFACTS	Add Prompt try to disable Artifacts	false
ENABLE_MIRROR_API	Enable direct use sk-ant-* as key	false
MIRROR_API_PREFIX	Add Prefix to protect Mirror，required when ENABLE_MIRROR_API is true	``

Include your API key in the request header:

Authorization: Bearer YOUR_API_KEY

curl -X POST http://localhost:8080/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "claude-3-7-sonnet-20250219",
    "messages": [
      {
        "role": "user",
        "content": "Hello, Claude!"
      }
    ],
    "stream": true
  }'

curl -X POST http://localhost:8080/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "claude-3-7-sonnet-20250219",
    "messages": [
      {
        "role": "user",
        "content": [
          {
            "type": "text",
            "text": "What\'s in this image?"
          },
          {
            "type": "image_url",
            "image_url": {
              "url": "data:image/jpeg;base64,..."
            }
          }
        ]
      }
    ]
  }'

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

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add some amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

This project is licensed under the MIT License - see the LICENSE file for details.

• Anthropic for creating Claude
• The Go community for the amazing ecosystem

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Made with ❤️ by yushangxiao