Running a marketplace means collecting on behalf of other people and taking a cut. The CryptoPayr Platform API does exactly that in crypto — one key, automatic commission splits and signed webhooks for every seller.
A marketplace is a payments business whether it wants to be or not. The moment you sit between a buyer and a seller, you have to collect money, route the right amount to the right person, take your commission, and prove every cent of it later. The CryptoPayr Platform API is built to do precisely that — in crypto, with a single integration.
Charging for your own products is easy. Charging on behalf of hundreds of independent sellers is where most platforms get stuck:
With a CryptoPayr platform account, you operate with one API key and reference each seller by their account ID. Here is the flow:
usr_… identifier. They keep their own account and balance.The commission is capped at the seller's net, so a misconfigured fee can never make a seller owe you money. On a $100 order with a 5% + $0.50 commission and the standard processing fee, your seller is credited their share and your cut lands in your balance the instant the payment completes — no invoices, no end-of-month reconciliation run.
Taking the money is half the job; proving it is the other half. The Platform API gives you:
order.completed event fires to your endpoint for every on-behalf order, separate from the seller's own webhook — so your ledger and theirs stay independent.If you run a digital goods marketplace, a services platform, a gig or creator marketplace, or any model where you collect for third parties and take a fee, this is the missing piece. Ordinary merchants selling their own products do not need it — a standard account already does that.
Read the Platform overview for worked examples, or jump straight into the API reference to see the create-on-behalf call. When you are ready, open a free account and apply for a platform account from your dashboard — you can be splitting your first order today.
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