Credit Policy

Twotic runs on prepaid credit. You add money to a balance, and each API call spends from it. There is no subscription, no invoice and no minimum.

Credit is non-refundable

Once added, credit is not exchangeable back into money. It does not expire, it is not tied to any single API, and it remains spendable across everything in the catalogue for as long as your account exists — but it cannot be withdrawn.

Add what you expect to use. Because credit is prepaid you can never be billed for more than you have already added, so the balance is also your spending cap.

What you are never charged for

Some failures cost you nothing, and this is applied automatically at the moment it happens — not on request:

• the service did not respond within its timeout;
• the service could not complete the request;
• an error on our side.

You can confirm this yourself: the response carries X-Twotic-Cost, and a call that was not charged reports zero. Your usage log shows the same.

What is charged

Errors caused by the request itself. A malformed parameter, a URL that does not resolve, an input that fails validation — these are real answers, produced by real work, and they are billed at the endpoint's normal rate. The error message always states what was wrong so it can be fixed.

Calls made with a leaked key. Credit spent by a key you shared or committed to a repository is spent. Rotate it immediately and see authentication for keeping keys server-side.

Free monthly allowance

Every API includes a monthly allowance consumed before your balance is touched. Those calls report a cost of zero and carry an X-Twotic-Allowance header. The allowance resets each calendar month and does not roll over.

Duplicate or failed top-ups

If a payment is taken and credit does not appear on your balance, that is a bug and we will fix it. Email billing@twotic.dev with the transaction reference from your billing page.

Questions

billing@twotic.dev — include your account email and the reference from the billing page.