---
id: anthropic
version: "0.121.0"
license: MIT
license_treatment: permissive
maintenance: active
---

# anthropic — The official Python library for the anthropic API

License: permissive · Maintenance: active · Popularity: top 1,000 on PyPI

## Install

pip install anthropic
uv add anthropic
poetry add anthropic

## Description

# Claude SDK for Python

[![PyPI version](https://img.shields.io/pypi/v/anthropic.svg)](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

```sh
pip install anthropic
```

## Getting started

```python
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](https://github.com/anthropics/anthropic-sdk-python/tree/main/./CONTRIBUTING.md).

## License

This project is licensed under the MIT License. See the [LICENSE](https://github.com/anthropics/anthropic-sdk-python/tree/main/LICENSE) file for details.

## AI interpretation — verify before relying

The Claude SDK for Python provides direct access to Anthropic's Claude API, enabling Python applications to send messages to Claude models and receive responses.

Verdict: A well-maintained, actively developed official SDK with low install friction, permissive MIT licensing, and no known vulnerabilities. Suitable for production use in Python 3.9+ applications needing Claude API access.

[View on SkillFed](https://skillfed.io/packages/anthropic) · [View on PyPI](https://pypi.org/project/anthropic/)