Billing primitives,
built for the way crypto settles.
Non-custodial stablecoin billing primitives — checkouts, invoices, subscriptions, wallets, webhooks, idempotency — plus the on-chain pieces a regulated merchant actually needs: chains, tokens, wallet authorizations, sanctions screening, and a regulator-readable audit pack.
{
"mode": "subscription",
"customerEmail": "alice@example.com",
"priceId": "price_pro_monthly",
"successUrl": "https://yourapp.com/success",
"chain": "base",
"token": "USDC"
}Three steps. No payouts. No reserves.
Because we never hold your funds, there's nothing to settle later. Everything is final when the block confirms.
Customer pays your wallet directly
Any self-custody wallet, any supported chain. Customer signs and broadcasts — OpenSettle is never in the signing path and never holds the funds.
We confirm on-chain
Once the block confirms, OpenSettle updates the invoice or subscription state, fires the signed webhook, and emails the receipt.
Fees billed off-chain, separately
Platform fees accrue off-chain at confirm time and are billed to you monthly. No router contract, no atomic split, no reserves — your money never leaves your wallet.
Everything you'd build yourself, already built.
Hosted or embedded. One-time, recurring, or multi-currency. Your branding, your domain.
Email-renewal one-click pay-link on every wallet, every chain. ERC-20 allowance autopay live on Base, Polygon, Arbitrum; smart-wallet autopay on the roadmap.
Profiles that aggregate every subscription, invoice, and payment to a single entity.
Generated automatically or ad-hoc. Hosted receipts with on-chain tx hashes and explorer links.
Connect any number of settlement addresses per chain. Ours to orchestrate, yours to own.
Signed, idempotent, with exponential retry and full delivery logs.
Test and live, scoped roles, rotate in one click.
MRR, GMV, active subscriptions, success rate — the real metrics B2B SaaS actually uses.
One API. Every stablecoin that matters.
Hosted checkout runs on four EVM networks today. Solana and Tron are API-ready — wallet verification and on-chain settlement ship; hosted checkout for both is next.
- Wallet verify & settlement via API; hosted checkout next
- One-time & subscriptions
- Email-renewal pay-link
- One-time & subscriptions
- Email-renewal pay-link
- One-time & subscriptions
- Email-renewal pay-link
- Wallet verify & settlement via API; hosted checkout next
- One-time & subscriptions
- Email-renewal pay-link