Multi-Chain Crypto Payment Gateway

This repository contains a minimal scaffold for a multi-service crypto payment gateway.

Services

• ingestion – Generates invoices and QR codes, listens for chain payments.
• swap-engine – Calls DEX aggregators (1inch, LI.FI, OpenOcean, ParaSwap) for quotes/swaps.
• wallet-manager – Manages MPC key shares for custodial wallets.
• settlement – Handles USDC balances and withdrawals to exchanges.
• compliance – Merchant onboarding with KYC checks.
• monitoring – Emits webhooks for payment and swap events.

Getting Started

1. Install dependencies in each service directory.
2. Copy .env.example to .env and fill in required variables.
3. Run docker-compose up --build to start all services and databases.

TODO

• Implement API documentation.
• Complete compliance rules and Travel Rule logic.
• Add environment variables for RPC URLs, API keys, and database credentials.
• Flesh out blockchain listeners and swap execution logic.
• Configure CI pipeline and tests.