Category API uses API keys to authenticate requests. You can create and manage your API keys in your dashboard.

Access to the API is performed via Bearer authentication. All requests to our API must include your API key in an Authorization header that looks like the following:

Authorization: Bearer YOUR_API_KEY

All API requests must be made over HTTPS. Calls made over plain HTTP will fail. API requests without authentication will also fail.

Multiple API keys

You can use CategoryAPI in as many projects as you'd like, and you can create unlimited API keys which all count towards your global credit usage.

We recommend creating one API key per project or team to make it easy to monitor and revoke outdated ones if needed.


Your API keys allow unrestricted usage of your account credits, so make sure to keep them secure! Do not share your API keys in publicly accessible areas such as GitHub, client-side code, and so forth.

If you believe one of your API key was compromised, you can easily revoke it from your dashboard.