From Your First API Call
to Agents in Production.

curl -i https://api.katara.com/v1/chat/completions \
  -H 'Content-Type: application/json' \
  -d '{
    "model": "katara/cortex@1",
    "messages": [{"role": "user", "content": "hi"}],
    "max_tokens": 8
  }'

This unpaid request returns 402 Payment Required with a quote. Sign the payment, then resend the same body with PAYMENT-SIGNATURE to run inference.

from openai import OpenAI
import os

client = OpenAI(
    base_url="https://api.katara.com/v1",
    api_key=os.environ["KATARA_API_KEY"],
)

reply = client.chat.completions.create(
    model="katara/cortex@1",
    messages=[{"role": "user", "content": "Hello, Katara!"}],
)

Build apps with the OpenAI client you already use. API-key requests pay from your Katara account balance.