Install and pin the Python client
Install the current openai package in a virtual environment and record the tested version in your lockfile. SDK behavior can change, so production deployments should not depend on an unbounded latest version.
CLAUDE API PYTHON
Call the Claude API from Python with a compatible SDK.
Python applications can call WorldGate's listed Claude models with the OpenAI client by changing the base URL, credential, and model identifier. This guide covers a minimal request, production configuration, streaming, common validation failures, and the usage checks needed before deploying a worker or agent.
Create an accountRead the key from the environment
Load WORLDGATE_API_KEY from a server-side environment variable. Fail during application startup if it is missing instead of sending anonymous requests or embedding a fallback credential in source code.
Set the compatible base URL
Initialize OpenAI with base_url set to https://worldgateapi.com/v1. Select a Claude identifier that appears in the current model catalogue, such as claude-sonnet-5 or claude-opus-5.
Handle streaming deliberately
Enable stream only when the caller consumes incremental chunks. Accumulate text for storage, handle an interrupted stream as an incomplete request, and avoid retrying blindly when part of a response may already have been processed.
Treat API errors by category
Authentication failures require a valid key; model errors require a listed identifier; 400 responses usually require correcting the payload; hard-cap or balance errors require an explicit billing decision. Add bounded retries only for transient failures.
Verify Python workload cost
Log your own request ID rather than prompts, then reconcile it with WorldGate token usage. Separate batch jobs, web requests, and experiments by API key so a high-volume Python worker cannot hide another service's cost.
PYTHON QUICK START
Use Claude with the OpenAI Python client.
Keep the key outside source control and test the selected model against representative Python workloads.
import os
from openai import OpenAI
client = OpenAI(
api_key=os.environ["WORLDGATE_API_KEY"],
base_url="https://worldgateapi.com/v1",
)
response = client.chat.completions.create(
model="claude-sonnet-5",
messages=[{"role": "user", "content": "Review this Python function."}],
)
print(response.choices[0].message.content)METHODOLOGY & SOURCES
Review the Python client.
Python setup reviewed against WorldGate's deployed chat completions surface on July 31, 2026.
COMMON QUESTIONS
What developers ask
Can Python call Claude through an OpenAI client?
Yes. Point a supported OpenAI client at WorldGate's compatible base URL and choose a Claude model currently listed by WorldGate.
What Python package do I install?
For this compatible example, install the openai package. Pin the version your tests cover.
What base URL should Python use?
Use https://worldgateapi.com/v1 for the OpenAI-compatible client.
How should I retry failed requests?
Retry only transient rate-limit or server failures with exponential backoff and a strict attempt limit. Do not retry invalid payloads or billing failures unchanged.
Can I stream Claude responses in Python?
Yes on the compatible chat completions surface. Consume chunks safely and define how your application handles an interrupted stream.
Lower model cost. Clearer usage.