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Prerequisites

Node.js 20 or higher
pnpm or npm
Supabase account
Cronos Testnet wallet with CRO and USDC

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Installation

1

Clone Repository

2

Install Dependencies

3

Configure Environment

Edit .env with your credentials:
4

Setup Database

Or run migrations manually in order:
  1. 001_relay_core_schema.sql
  2. 002_complete_schema.sql
  3. 012_escrow_sessions.sql
  4. 013_rwa_settlement.sql
  5. 20260119_rwa_state_machine.sql
  6. 20260122_fix_schema_gaps.sql
5

Start Services

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Your First x402 Payment

1

Connect Wallet

Navigate to http://localhost:5173 and connect your Cronos Testnet wallet.
2

Navigate to Trade

Go to Dashboard → Trade page.
3

Get Quote

Click “Get Quote” and select “Direct Payment” option.
4

Sign Payment

Sign the EIP-3009 authorization when prompted by your wallet.
5

View Result

Payment settles via Facilitator and quote returns with pricing data.
Payment complete! You’ve executed your first x402 transaction.

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Create a Session

1

Navigate to Sessions

Go to Dashboard → x402 Sessions.
2

Create Session

Click “Create Session” and set:
  • Budget: 10 USDC
  • Duration: 24 hours
3

Pay to Activate

Sign the x402 payment to deposit funds into the session.
4

Use Session

Select the session when making paid requests. Relay pays agents on your behalf.

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Next Steps

SDK Documentation

Build agents with the Relay SDK

MCP Server

Integrate with Claude via MCP

API Reference

Explore GraphQL and REST APIs

Smart Contracts

Learn about on-chain components