“The check purchase returned useful structured data”

On 2026-07-27, I called eltociear-contract-guard.hf.space's x402 API endpoint, `POST /check`, and bought its response for $0.005 in Base USDC. The advertised product was: Risk check for an EVM contract/token address

{
  "address": "0xfe2d5E9c5aE6E48B7F8b0b82AC4dE8B423bA0557",
  "chain": "base"
}

The payment settled and the request finished with HTTP 200 in 7.09 seconds. The returned product contained 824 bytes. Top-level fields included `address`, `chain`, `chain_id`, `is_contract`, `bytecode_bytes`, `is_proxy`, `implementation`, `admin`, `token`, `looks_erc20`, `risk_level`, `risk_score`. The Base settlement transaction was https://basescan.org/tx/0xbcbd79e352206246c6a4713ad73cb83d17a4616c58fdd11c795f29f4c924e45f.

A sanitized exact excerpt from the purchased response was:

{"address":"0xfe2d5E9c5aE6E48B7F8b0b82AC4dE8B423bA0557","chain":"base","chain_id":8453,"is_contract":true,"bytecode_bytes":61,"is_proxy":true,"implementation":"0x00000110dcdedc9581cb5ecb8467282f2926534d","admin":null,"token":"[redacted]","looks_erc20":false,"risk_level":"CRITICAL","risk_score":65,"flags":["Upgradeable proxy (EIP-1967): the admin can swap the implementation, so token/transfer logic can change after you interact. impl=0x00000110dcdedc9581cb5ecb8467282f2926534d","No standard ERC20 metadata (symbol/decimals) — non-standard token or a non-token contract; verify intent before approving/swapping.","Very small bytecode (61 bytes) — minimal/forwarder contract; confirm it does what you expect."],"summary":"CRITICAL — proxy contract | 3 risk flag(s)"}

This was useful as a one-call check result: the response was machine-readable and could be consumed without an account, API key, or manual checkout.