Authentication

Relay uses bearer API keys, exactly like the OpenAI API. Send your key in the Authorization header on every request.

API keys

• Create and revoke keys in your dashboard.
• Treat keys like passwords. Never commit them to source control or ship them in client-side code.
• Use separate keys per environment (dev / staging / prod) and rotate regularly.

Sending your key

curl https://api.relay.com/v1/chat/completions \
  -H "Authorization: Bearer $RELAY_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"deepseek-v4-flash","messages":[{"role":"user","content":"Hello"}]}'

With the OpenAI SDKs

from openai import OpenAI
client = OpenAI(api_key="YOUR_RELAY_KEY", base_url="https://api.relay.com/v1")