ClearBox is a stablecoin settlement hub. It lets a verified consumer pay a merchant with digital assets and have that value clear into fiat or stablecoin finality in real time — even at legacy point-of-sale terminals that don’t speak blockchain. Under the hood, ClearBox orchestrates four capabilities behind a single integration: open-banking connectivity, institutional-grade identity verification, embedded non-custodial wallets, and a mirror-ledger settlement engine that authorizes a transaction in roughly 0.2 seconds while the underlying chain settles in the background.Documentation Index
Fetch the complete documentation index at: https://docs.clear-box.io/llms.txt
Use this file to discover all available pages before exploring further.
Quickstart
Onboard a user, create a wallet, and run your first settled transaction.
Platform Overview
See how the building blocks fit together end to end.
Authentication
Get API keys and authenticate your requests.
API Reference
Full endpoint reference for the ClearBox API.
What you can build
ClearBox is designed for operators of closed-loop, “walled garden” environments — venues, festivals, campuses, resorts, and the networks that serve them — as well as the developers integrating payments into those environments.Tap-to-pay at the venue
Issue a wallet-backed card to a guest and let them tap to pay at any terminal.
Stablecoin checkout
Accept any supported digital asset and settle into the merchant’s currency.
Compliant onboarding
Verify identity and link a funding source in a single onboarding flow.
How ClearBox is structured
ClearBox is modular. You can adopt the pieces you need and combine them into an end-to-end flow:| Capability | What it does | Powered by |
|---|---|---|
| Onboarding | Links a user’s bank and captures profile data | Quiltt (open banking) |
| Identity (ClearCheck) | Verifies who the user is — KYC, AML, KYB | Persona, surfaced through Crossmint Auth |
| Wallets | Provisions an invisible, non-custodial smart-contract wallet | Crossmint |
| Cards | Issues virtual Visa/Mastercard cards from the wallet balance | Crossmint card extensions |
| Settlement (ClearSwap / ClearDEX) | Authorizes, routes, and settles the transaction | ClearBox mirror ledger |
Each integration partner is documented in its own guide so your developers can follow the exact request/response shape for that step. Where an endpoint is specific to your ClearBox program, it’s marked clearly so you can drop in your program’s values.