DeFi Relay RPC - Pay-per-request EVM RPC Access

This service provides access to EVM RPC nodes using the x402 payment protocol.

PRICING:
  Standard requests: 100 raw USDC per request
  Heavy requests:    1000 raw USDC per request

AVAILABLE NETWORKS:
  - /rpc/light/base
  - /rpc/heavy/base
  - /rpc/light/mainnet
  - /rpc/heavy/mainnet

ENDPOINTS:
  GET  /                        - This help page
  GET  /health                  - Health check
  GET  /networks                - List available networks (JSON)
  GET  /agent.json              - EIP-8004 agent metadata
  GET  /.well-known/x402        - x402 discovery document
  POST /rpc/light/{network}     - Light JSON-RPC endpoint (non-heavy methods only)
  POST /rpc/heavy/{network}     - Heavy JSON-RPC endpoint (ALL methods supported)

HEAVY METHODS (require /rpc/heavy/{network}):
  - eth_getLogs
  - eth_getFilterLogs
  - eth_newFilter
  - eth_newBlockFilter
  - eth_newPendingTransactionFilter
  - debug_traceTransaction
  - debug_traceCall
  - debug_traceBlockByNumber
  - debug_traceBlockByHash
  - trace_block
  - trace_transaction
  - trace_call
  - trace_rawTransaction
  - trace_replayTransaction
  - trace_replayBlockTransactions

USAGE:
  1. Choose your endpoint:
     - /rpc/light/{network} for standard methods (lower cost)
     - /rpc/heavy/{network} for heavy methods OR if you want a single endpoint for all methods
  2. Send a POST request to your chosen endpoint
  3. If no payment header is provided, you'll receive a 402 response
     with payment requirements in the "payment-required" header
  4. Create a payment using the x402 protocol and include it in
     the "X-PAYMENT" header
  5. The service will verify payment and forward your request to the RPC node

EXAMPLE REQUESTS:
  # Light request (standard cost)
  POST /rpc/light/mainnet
  Content-Type: application/json
  X-PAYMENT: <base64-encoded-payment>

  {
    "jsonrpc": "2.0",
    "method": "eth_blockNumber",
    "params": [],
    "id": 1
  }

  # Heavy request (higher cost)
  POST /rpc/heavy/mainnet
  Content-Type: application/json
  X-PAYMENT: <base64-encoded-payment>

  {
    "jsonrpc": "2.0",
    "method": "eth_getLogs",
    "params": [{"fromBlock": "0x0", "toBlock": "latest"}],
    "id": 1
  }

For more info on x402: https://www.x402.org