{
  "service": "On-chain Health & Net Worth",
  "description": "Current on-chain state for EVM wallets and markets on Ethereum, Base, Arbitrum, Optimism and Polygon: lending health factors (Aave v3, Spark, Compound v3), wallet net worth across major tokens priced by Chainlink, Chainlink oracle prices with staleness, stablecoin peg and supply, and signature verification (EIP-191, EIP-712, ERC-1271). Read live from public RPC via Multicall3.",
  "endpoints": [
    {
      "path": "/health-factor",
      "price": "$0.01 USDC on Base (x402)",
      "summary": "Lending positions and health factor for an EVM address",
      "example": {
        "address": "0x959f779c1ddc3ca3a7716ddaef2dc6e9480437da",
        "chains": "ethereum,base"
      }
    },
    {
      "path": "/net-worth",
      "price": "$0.01 USDC on Base (x402)",
      "summary": "Wallet net worth across major tokens on 5 EVM chains",
      "example": {
        "address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
        "chains": "ethereum,base"
      }
    },
    {
      "path": "/oracle-price",
      "price": "$0.002 USDC on Base (x402)",
      "summary": "Chainlink oracle price with round, update time and staleness",
      "example": {
        "pairs": "ETH/USD,BTC/USD",
        "chain": "ethereum"
      }
    },
    {
      "path": "/stablecoin-peg",
      "price": "$0.003 USDC on Base (x402)",
      "summary": "Stablecoin oracle price, deviation from $1 and on-chain supply per chain",
      "example": {
        "symbols": "USDC,USDT",
        "chains": "ethereum,base"
      }
    },
    {
      "path": "/verify-signature",
      "price": "$0.002 USDC on Base (x402)",
      "summary": "Verify an EIP-191, EIP-712 or ERC-1271 signature",
      "example": {
        "address": "0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826",
        "signature": "0x4355c47d63924e8a72e509b65029052eb6c299d53a04e167c5775fd466751c9d07299936d304c153f6443dfa05f40ff007d72911b6f72307f996231605b915621c",
        "hash": "0xbe609aee343fb3c4b28e1df9e632fca64fcfaede20f02e86244efddf30957bd2"
      }
    }
  ],
  "openapi": "https://onchain-health.mick8511.workers.dev/openapi.json",
  "free_sample": "https://onchain-health.mick8511.workers.dev/sample",
  "health_all": "https://onchain-health.mick8511.workers.dev/health/all",
  "llms_txt": "https://onchain-health.mick8511.workers.dev/llms.txt",
  "x402_discovery": "https://onchain-health.mick8511.workers.dev/.well-known/x402",
  "catalog": "https://nojunkcrypto.com/services",
  "facilitator": "cdp",
  "sources": "Public blockchain state (Ethereum, Base, Arbitrum, Optimism, Polygon) via publicnode.com RPC and Multicall3; Chainlink Data Feeds; Aave v3, Spark and Compound v3 contracts. Not affiliated with or endorsed by any of them.",
  "disclaimer": "Current on-chain state read via public RPC at the latest block; values change every block. Prices are Chainlink oracle answers (BTC-pegged tokens use BTC/USD). Only listed protocols and tokens are covered. Factual data only; not financial advice."
}