API keys and rate limits

Create an API key on the Scale plan, authenticate with a bearer token, and stay inside 100 requests per minute per key.

Creating a key

Create keys in Settings. A live key begins ep_live_ and a test key ep_test_. Only a hash of the key is stored, so the full value is shown once, at creation, and cannot be recovered afterwards — listings show only the prefix and the last four characters. If you lose it, revoke it and make another.

Using a key

Authorization: Bearer ep_live_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

See the API reference for the endpoints themselves.

Rate limits

Each key is allowed 100 requests per minute. Going over returns HTTP 429 with a Retry-After header telling you how long to wait. Errors come back in a consistent shape with a machine-readable code alongside the message, so you can branch on the code rather than parsing prose.

Still stuck?

Email support@embpay.com. It is the same address on every plan — there is no priority queue to be prioritised over. If something on this page disagrees with what the product does, that is a bug in this page and we want to hear about it.