Quick definition · 2 min Coding term
API key
An API key is a secret password that lets your app use an outside service, like an AI model, proving the request comes from your account.
Think of it like
A keycard to a members-only service. It proves it is you, and you should never hand it out.
Example
To use an AI model in your app, you paste in its API key. If that key leaks publicly, strangers can run up your bill.
Why it matters
Vibe coders paste these everywhere and sometimes leak them by accident. Treat an API key like a password: keep it secret.
Where you’ll see it
OpenAIStripeevery API
Related terms