Authentication - Euri

API key authentication

Every request to the EURI API must include your API key in the Authorization header:

Authorization: Bearer YOUR_EURI_API_KEY

Getting your API key

Sign in at euron.one/euri.
Go to Billing & API Keys.
Click Create API Key.
Copy and store the key securely — it won’t be shown again.

Example request

curl -X POST https://api.euron.one/api/v1/euri/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer euri-sk_abc123..." \
  -d '{"model": "gpt-4o-mini", "messages": [{"role": "user", "content": "Hello"}]}'

Using with OpenAI SDKs

Set the api_key and base_url parameters:

from openai import OpenAI

client = OpenAI(
    api_key="YOUR_EURI_API_KEY",
    base_url="https://api.euron.one/api/v1/euri"
)

Security best practices

Never expose your API key in client-side code (browser, mobile app).
Store keys in environment variables or a secrets manager.
Rotate keys periodically from the dashboard.
Use separate keys for development and production.

Error responses

If your key is missing or invalid, you’ll receive:

{
  "error": {
    "message": "Invalid API key provided.",
    "type": "authentication_error",
    "code": "invalid_api_key"
  }
}