api.eucompliance.tools

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "hint": "x402 v2 - the payment challenge is in the PAYMENT-REQUIRED response header",
  "status": "payment_required",
  "catalog": "https://api.eucompliance.tools/llms.txt",
  "service": "Agent Chain Data: ERC-20 Token Balance & Allowance",
  "receipts": "every paid response carries a signed, independently verifiable receipt - verify free at https://api.eucompliance.tools/verify",
  "next_tools": {
    "advisory": true,
    "contract": "next-tools/1",
    "auto_execute": false,
    "recommendations": [
      {
        "url": "https://api.eucompliance.tools/x402/preflight",
        "tool": "tx_preflight",
        "price": "$0.02",
        "method": "GET",
        "reason": "Combine balance and allowance evidence with the complete transaction preflight.",
        "condition": "before signing a token transaction",
        "auto_execute": false
      }
    ]
  },
  "description": "Pre-flight check before a swap or transfer: ERC-20 allowance, balance, decimals and symbol in one call, read live from the chain at the latest block. Pass an amount and get a straight would_succeed verdict with the blocking reason and the action needed. Base, Ethereum, Arbitrum, Optimism, Polygon. A missing approval burns the gas of a failed transaction - this call costs a fraction of that."
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x478bCdeA94b9CB5EA14C33e6f0d7E920743d39f2",
    "amount": "2000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Provenance

Seen in the source catalog

2026-08-04 22:08Z

Last indexed by Roundhouse

2026-09-24 21:45Z

Last enriched (probe, favicon, geo)

2026-09-18 08:45Z

x402 version

2

Max timeout

300s

Liveness probe

HTTP 402