Pay only for what you use. No subscriptions. No tiers. No surprises.
Every API call has a clear, predictable cost. Nothing hidden.
Total cost = API price + 5% fee
The API owner sets their price per call (for example, $0.01, $0.10, or $5.00). A 5% fee is added on top. That's it.
Plus a tiny transaction fee of about $0.001 per call to process the payment in the blockchain.
Here are some real-world examples so you can plan your budget.
| API Price | 5% Fee | Transaction | You Pay |
|---|---|---|---|
| $0.01 | $0.0005 | ~$0.001 | $0.0115 |
| $0.10 | $0.005 | ~$0.001 | $0.106 |
| $1.00 | $0.05 | ~$0.001 | $1.051 |
| $5.00 | $0.25 | ~$0.001 | $5.251 |
The 5% fee is charged separately to the consumer. You receive every cent of your stated price.
Choose any per-call price you want. Change it anytime. No approval needed.
We don't take a cut of your price. The fee is added on top and paid by the consumer.
No listing fees, no platform fees, no minimum payments. You only earn, never pay.
Opsalis uses USDC exclusively. No credit cards, no invoices, no bank transfers. Just USDC.
USDC is a digital dollar. 1 USDC = $1.00, always.
USDC is the only payment method on Opsalis. Every price, every balance, every payment is in USDC. This keeps things simple — one currency, no exchange rates, no conversion fees.
You can buy USDC on any major exchange — Coinbase, Binance, Kraken, and many others. You can also earn it from API calls and cash it out to your bank account anytime, in your local currency.
Think of it like a prepaid balance. You load up USDC, use it to pay for API calls, and cash out whatever is left whenever you want. No lock-up, no waiting period.
Traditional API marketplaces charge monthly fees and take a revenue cut. We don't.
| Opsalis | Traditional | |
|---|---|---|
| Monthly fee | None | $29–$499/mo |
| Revenue share | 0% (owner keeps 100%) | 20–30% cut |
| Per-call fee | 5% added to consumer | Included in rev share |
| Sign-up required | No | Yes (email, name, card) |
| Lock-in | None — withdraw anytime | Annual contracts |
| We hold your money? | Never | Yes (30-day payouts) |
Join the beta. No credit card. No commitment.