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System Requirements

Node.js

Version 20 or higher

Package Manager

pnpm (recommended) or npm

Database

Supabase account

Wallet

Cronos Testnet with CRO and USDC

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Installation Steps

1

Clone Repository

git clone https://github.com/winsznx/relaycore.git
cd relaycore
2

Install Dependencies

Using pnpm (recommended):
pnpm install
Or using npm:
npm install
3

Environment Configuration

Copy the example environment file:
cp .env.example .env
Edit .env with your credentials:
# Supabase
VITE_SUPABASE_URL=https://your-project.supabase.co
VITE_SUPABASE_ANON_KEY=your-anon-key
SUPABASE_SERVICE_ROLE_KEY=your-service-role-key

# WalletConnect
VITE_WALLETCONNECT_PROJECT_ID=your-project-id

# Wallet Keys
WALLET_PRIVATE_KEY=your-private-key
RELAY_PRIVATE_KEY=your-relay-wallet-key

# Contracts
ESCROW_CONTRACT_ADDRESS=0x9D340a67ddD4Fcf5eC590b7B67e1fE8d020F7D61

# Cronos
VITE_CRONOS_RPC_URL=https://evm-t3.cronos.org
CRONOS_RPC_URL=https://evm-t3.cronos.org

# USDC Token
VITE_USDCE_CONTRACT=0x...

# x402
VITE_X402_FACILITATOR_URL=https://facilitator.cronos.org
4

Database Setup

Run migrations in order:
pnpm db:migrate
Or manually execute SQL files:
  1. supabase/migrations/001_relay_core_schema.sql
  2. supabase/migrations/002_complete_schema.sql
  3. supabase/migrations/012_escrow_sessions.sql
  4. supabase/migrations/013_rwa_settlement.sql
  5. supabase/migrations/20260119_rwa_state_machine.sql
  6. supabase/migrations/20260122_fix_schema_gaps.sql
5

Start Services

Open three terminal windows:Terminal 1 - Frontend
pnpm dev
Runs on http://localhost:5173Terminal 2 - GraphQL API
pnpm dev:graphql
Runs on http://localhost:4000Terminal 3 - Indexers
pnpm dev:indexers
Background cron jobs
6

MCP Server (Optional)

cd mcp-server
npm install
npm run build
npm run dev

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Verification

Navigate to http://localhost:5173You should see the Relay Core dashboard. Connect your wallet to verify integration.

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Troubleshooting

If port 5173 or 4000 is already in use:
# Kill process on port 5173
lsof -ti:5173 | xargs kill -9

# Kill process on port 4000
lsof -ti:4000 | xargs kill -9
Verify Supabase credentials in .env:
  • Check VITE_SUPABASE_URL matches your project URL
  • Verify VITE_SUPABASE_ANON_KEY is correct
  • Ensure Row Level Security policies are configured
  • Ensure you’re on Cronos Testnet (Chain ID 338)
  • Verify VITE_WALLETCONNECT_PROJECT_ID is set
  • Check browser console for errors
Clear cache and reinstall:
rm -rf node_modules pnpm-lock.yaml
pnpm install
pnpm build

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Next Steps

Quick Start

Execute your first x402 payment

Environment Variables

Learn about all configuration options