You built something useful. People want to use it. Let them pay per call — and keep 100% of your price.
Until now, selling access to your API meant building your own billing system or giving up a big cut.
Payment processing, usage tracking, invoicing, rate limiting, API keys, dashboards. Months of work that has nothing to do with your actual API.
Traditional API marketplaces take 20–30% of your revenue and require monthly fees. They also hold your money for 30+ days before paying you.
Many developers end up giving their API away because the alternative is too complicated. That's money left on the table.
You focus on your API. We handle payments, encryption, and delivery. Zero code changes to your existing API.
Download and run the Opsalis control center on your server. It sits in front of your API and handles everything.
Tell the control center where your API is and upload your spec file. Works with any protocol — REST, GraphQL, SOAP, gRPC, and more.
Choose how much to charge per call. $0.001, $0.10, $5.00 — whatever your API is worth. Change it anytime.
Consumers pay per call in USDC (a digital dollar). The money goes directly to your wallet. We never hold it.
You set the price. Here's what different APIs might earn.
| API Type | Price/Call | 1K Calls/Day | Monthly |
|---|---|---|---|
| Data lookup | $0.01 | $10 | $300 |
| Text processing | $0.05 | $50 | $1,500 |
| Image analysis | $0.25 | $250 | $7,500 |
| Premium data | $1.00 | $1,000 | $30,000 |
You receive 100% of these amounts. The 5% fee is charged separately to the consumer.
Everything below is handled automatically by the Opsalis control center.
No Stripe, no invoices, no payment disputes. Consumers prepay and the payment program sends you money after each call.
No key management, no dashboards, no rate limiting logic. The control center handles authentication via encryption.
Your API stays exactly as it is. The control center sits in front of it and translates. REST, GraphQL, SOAP, gRPC — all work as-is.
No sign-up forms, no email verification, no KYC. You just need a wallet address to receive payments.
Join the beta. Set your price. Keep every cent.
Read the Full Owner Guide →