anthropic

Install

anthropic on PyPI

pip install anthropic

uv add anthropic

poetry add anthropic

Package facts

Evidence: anthropic-0.121.0-py3-none-any.whl

About anthropic

from the package's own PyPI description — quoted content, verbatim

pip install anthropic

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)

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AI interpretation — verify before relying

AI-generated interpretation of the package facts above; every digit, version, license, or vulnerability id it cites is grounded in the facts already shown on this page

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.

Low friction install with a pure-wheel distribution and well-maintained dependencies. Active development with a release 6 days ago indicates solid community backing.

MIT license permits commercial and private use with minimal restrictions; you may use, modify, and distribute this package freely provided you include the license notice.

pip install anthropic

import os
from anthropic import Anthropic

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

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.

Needs verification

• Whether the SDK supports streaming responses or only blocking message creation as shown in the excerpt.
• Rate limiting or quota behavior when making repeated API calls.
• Whether additional system dependencies beyond Python are required for any runtime operations.

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