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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.