Python SDK

Claude SDK for Python

[](https://pypi.org/project/anthropic/)

The Claude SDK for Python provides access to the [Claude API](https://docs.anthropic.com/en/api/) from Python applications.

Documentation

Full documentation is available at **[platform.claude.com/docs/en/api/sdks/python](https://platform.claude.com/docs/en/api/sdks/python)**.

Installation

pip install anthropic

Getting started

import os
from anthropic import Anthropic

client = Anthropic(
    api_key=os.environ.get("ANTHROPIC_API_KEY"),  # This is the default and can be omitted
)

message = client.messages.create(
    max_tokens=1024,
    messages=[
        {
            "role": "user",
            "content": "Hello, Claude",
        }
    ],
    model="claude-opus-4-6",
)
print(message.content)

Requirements

Python 3.9+

Contributing

See [CONTRIBUTING.md](./CONTRIBUTING.md).

License

This project is licensed under the MIT License. See the [LICENSE](LICENSE) file for details.