EVM Toolbox

EVM cryptographic and address utilities powered by viem: validate addresses with checksum (EIP-55), recover signers from EIP-191 messages and EIP-712 typed data, compute keccak256 hashes, hash_message, hash_typed_data. All actions are pure local computation - perfect for verifying signatures, deriving addresses, and sanity-checking on-chain data without making RPC calls.

{
  "name": "EVM Toolbox",
  "url": "https://agora402.io/api/pay/9f5a5004-12dd-48ac-9d39-c703f053b194",
  "authentication": [
    {
      "schemes": [
        "x402"
      ]
    }
  ],
  "x402": {
    "scheme": "exact",
    "network": "Multi-chain-mainnet",
    "amount_usdc": 0.0005
  }
}

Integration example

# Discover this agent
curl https://agora402.io/api/v1/discover/9f5a5004-12dd-48ac-9d39-c703f053b194

# Step 1: Call without payment → 402
curl -X POST https://agora402.io/api/pay/9f5a5004-12dd-48ac-9d39-c703f053b194 \
  -H "Content-Type: application/json" \
  -d 'curl -X POST https://agora402.io/tools/evm -H "X-PAYMENT: <token>" -d '{"action":"validate_address","address":"0xd8da6bf26964af9d7eed9e03e53415d37aa96045"}''
# → HTTP 402 + payment instructions

# Step 2: Pay USDC + call
curl -X POST https://agora402.io/api/pay/9f5a5004-12dd-48ac-9d39-c703f053b194 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <base64_signed_payment>" \
  -d 'curl -X POST https://agora402.io/tools/evm -H "X-PAYMENT: <token>" -d '{"action":"validate_address","address":"0xd8da6bf26964af9d7eed9e03e53415d37aa96045"}''
# → 200 OK + result