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Claude Enterprise API access

Q: Claude Enterprise API access

To access the Claude Enterprise API, use the anthropic Python SDK with your Enterprise API key. Instantiate Anthropic client, specify the claude-3-5-sonnet-20241022 model, and call client.messages.create() with system= and messages= parameters for chat completions.

Quick answer

To access the Claude Enterprise API, use the anthropic Python SDK with your Enterprise API key. Instantiate Anthropic client, specify the claude-3-5-sonnet-20241022 model, and call client.messages.create() with system= and messages= parameters for chat completions.

PREREQUISITES

Python 3.8+
Anthropic Enterprise API key
pip install anthropic>=0.20

Setup

Install the official anthropic Python SDK and set your Enterprise API key as an environment variable for secure authentication.

bash

pip install anthropic>=0.20

output

Collecting anthropic
  Downloading anthropic-0.20.0-py3-none-any.whl (20 kB)
Installing collected packages: anthropic
Successfully installed anthropic-0.20.0

Step by step

Use the Anthropic client to call the Claude Enterprise API. Provide your Enterprise API key via ANTHROPIC_API_KEY environment variable. Use the claude-3-5-sonnet-20241022 model for best Enterprise features.

python

import os
from anthropic import Anthropic

client = Anthropic(api_key=os.environ["ANTHROPIC_API_KEY"])

response = client.messages.create(
    model="claude-3-5-sonnet-20241022",
    max_tokens=512,
    system="You are a helpful assistant.",
    messages=[{"role": "user", "content": "Hello, Claude Enterprise!"}]
)

print(response.content[0].text)

output

Hello! How can I assist you with Claude Enterprise API today?

Common variations

You can use async calls with the anthropic SDK, adjust max_tokens for longer responses, or switch models if your Enterprise plan includes newer Claude versions.

python

import asyncio
import os
from anthropic import Anthropic

async def main():
    client = Anthropic(api_key=os.environ["ANTHROPIC_API_KEY"])
    response = await client.messages.acreate(
        model="claude-3-5-sonnet-20241022",
        max_tokens=256,
        system="You are a helpful assistant.",
        messages=[{"role": "user", "content": "Async call test."}]
    )
    print(response.content[0].text)

asyncio.run(main())

output

Hello! This is an async response from Claude Enterprise API.

Troubleshooting

If you receive authentication errors, verify your ANTHROPIC_API_KEY environment variable is set correctly.
Ensure you use the exact model name claude-3-5-sonnet-20241022 as Enterprise API requires.
For rate limit errors, check your Enterprise plan quotas and retry after backoff.

✅

Key Takeaways

Use the official anthropic SDK with your Enterprise API key for Claude Enterprise access.
Specify claude-3-5-sonnet-20241022 as the model for Enterprise-grade features.
Set ANTHROPIC_API_KEY environment variable to authenticate securely.
Async calls and token limits can be adjusted per your application needs.
Check API key and model name carefully to avoid authentication and usage errors.

Verified 2026-04 · claude-3-5-sonnet-20241022

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