Guides

Real docs generated alongside the build — not written separately from what actually shipped.

Real curl commands to a settled payment, ~15-30s end to end.

Payment gateway

Drop-in hosted checkout: accept any stablecoin, settle in one currency.

Every code, HTTP status, and what to do about it.

Webhook verification

Node, Go, Python — all the same HMAC algorithm.

Generated from a live GET /v1/currencies call, not hand-written.

FX timing model

Firm rate at payment time vs. indicative rate for pre-priced invoices.

FX capability report

What StableFX actually covers right now, and why.

The settlement intent lifecycle and the nested FX trade lifecycle.

Amount modes, expiry, single vs multi-use, void — and cross-chain funding status.

A QR per bill, printed by the till — wiring a restaurant POS to a storefront.

Settlement addresses

Where your money lands, where you can withdraw it, and why those are different questions.

Employees, runs, what atomic means here and what it does not, and why nobody can be paid twice.