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It has a SOTA hallucination detection model Lynx, which is also open source. Portkey integrates with multiple Patronus evaluators to help you enforce LLM behavior.

List of all Patronus evaluators supported on Portkey

Browse Patronus’ docs for more info:

What is Patronus AI?

Learn more about Patronus AI and their offerings.

Using Patronus with Portkey

1. Add Patronus API Key to Portkey

Grab your Patronus API key from here. On the Integrations page, click on the edit button for the Patronus and add your API key.

2. Add Patronus’ Guardrail Checks & Actions

Navigate to the Guardrails page and you will see the Guardrail Checks offered by Patronus there. Add the ones you want, set actions, and create the Guardrail!

List of Patronus Guardrail Checks

Your Patronus Guardrail is now ready to be added to any Portkey request you’d like!

3. Add Guardrail ID to a Config and Make Your Request

Patronus integration on Portkey currently only works on model outputs and not inputs.
  • When you save a Guardrail, you’ll get an associated Guardrail ID - add this ID to the after_request_hooks params in your Portkey Config.
  • Save this Config and pass it along with any Portkey request you’re making!
Your requests are now guarded by your Patronus evaluators and you can see the Verdict and any action you take directly on Portkey logs! More detailed logs for your requests will also be available on your Patronus dashboard.

Get Support

If you face any issues with the Patronus integration, just ping the @patronusai team on the community forum.
Last modified on April 30, 2026