Auth0 API keys
Auth0 API credentials belong in configuration, not in a commit. This page covers where to create one, what it looks like, and how APIKeyConnect stores it without ever being able to read it.
The facts
- Category
- Authentication & Security
- API host
*.auth0.com- Key format
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx- Env variable
AUTH0- Sensitivity
- Critical
- Create a key
- https://manage.auth0.com/ — Applications → Applications → your app → Settings for the Client ID and Client Secret.
- Documentation
- https://auth0.com/docs/api
A leaked key here can move money, delete data, or impersonate your organisation. Rotate immediately if one is ever exposed, and never let one reach a client bundle.
Kinds of Auth0 key
Client ID
Client Secret
How APIKeyConnect stores it
The key is encrypted in your browser with AES-256-GCM, under a key derived from your master password with PBKDF2-SHA-256 at 600,000 iterations. The password never leaves your device, and the server holds ciphertext it has no way to open.
What the server can see — and what this design does not protect against — is written out in full on the security page. That section exists because a page with no limits section is marketing.
Questions
Where do I get a Auth0 API key?
Auth0 issues keys from https://manage.auth0.com/. Applications → Applications → your app → Settings for the Client ID and Client Secret. Once you have it, store it in APIKeyConnect rather than in a .env file you might commit — the key is encrypted on your device with a master password we never receive.
What does a Auth0 API key look like?
Auth0 keys follow the pattern xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx. Knowing the shape is useful for spotting one that has been pasted into a commit, a log line, or a support ticket — the places keys leak from most often.
What environment variable should I use for Auth0?
Most projects use AUTH0. APIKeyConnect recognises these names, so importing an existing .env maps the value onto Auth0 automatically instead of leaving it as an unlabelled string, and generating a .env writes it back under the same name.
How dangerous is a leaked Auth0 key?
Critical sensitivity. A leaked key here can move money, delete data, or impersonate your organisation. Rotate immediately if one is ever exposed, and never let one reach a client bundle.
Does Auth0 have more than one kind of key?
Yes — Client ID, Client Secret. They differ in scope, so keeping them as separate entries rather than one "the Auth0 key" is what lets you rotate the risky one without touching the others.
Can APIKeyConnect see my Auth0 key?
No. The key is encrypted in your browser with AES-256-GCM under a key derived from your master password (PBKDF2-SHA-256, 600,000 iterations). The password never leaves your device and the server stores ciphertext it cannot open. What the server can see is documented in full on the security page, including what this design does not protect against.