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README.md

Fee Payer

Overview

Example fee payer relay server that enables gasless transactions on Tempo.

The server accepts user-signed Type 0x76 transactions, adds its own fee payer signature, and broadcasts the dual-signed transaction to the network.

Running

  1. Copy the environment file and configure your settings:
cd examples/feepayer
cp env.example .env
  1. Edit .env with your values:
FEE_PAYER_PORT=3000
TEMPO_RPC_URL=https://rpc.testnet.tempo.xyz
TEMPO_USERNAME=your-username
TEMPO_PASSWORD=your-password
TEMPO_FEE_PAYER_PRIVATE_KEY=0x...
ALPHAUSD_ADDRESS=0x20c0000000000000000000000000000000000001
TEMPO_CHAIN_ID=42424
  1. Run the server:
go run cmd/main.go

The server exposes eth_sendRawTransaction and eth_sendRawTransactionSync JSON-RPC methods on the configured port.