---
title: API keys & security
canonical_url: https://rebilder.com/help/api-keys
---

# [API keys & security](https://rebilder.com/help/api-keys)

- [How API keys work](https://rebilder.com/help/api-keys/how-api-keys-work)
  - Keys start with rblr_, are shown once, and authenticate supported integrations for your own site. Learn their scope and how to rotate them.
- [Rotate a key](https://rebilder.com/help/api-keys/rotate-a-key)
  - Create a new key for a site in Settings and confirm. The old key stops working right away, so add the new key to your integration straight after.
- [What to do if a key leaks](https://rebilder.com/help/api-keys/key-leaked)
  - Rotate immediately, then know the blast radius: a leaked key can access supported integrations for its site.