evm-watchdog-scan.fly.dev

Live 402 challenge

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

{
  "asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
  "error": "payment_required",
  "howTo": "POST https://evm-watchdog-scan.fly.dev/agent/contract with a JSON body like {\"address\":\"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\",\"chain\":\"base\"}. The 402 answer carries x402 v2 terms in the PAYMENT-REQUIRED header; resend the same request with PAYMENT-SIGNATURE.",
  "payTo": "0x0e659996c75dcb352e95e130d79831e3e2fa82a8",
  "manual": "https://evm-watchdog-scan.fly.dev/skill.md",
  "network": "eip155:8453",
  "priceUsdc": 0.05,
  "description": "Use this before approving or depositing into a contract on Base or Robinhood Chain: is it a proxy, who can change its code (single key, Safe with threshold, timelock with delay), who owns it, is the live code verified on Sourcify. Instant, per request.",
  "exampleBody": {
    "chain": "base",
    "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
  }
}

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": "0x0e659996c75dcb352e95e130d79831e3e2fa82a8",
    "scheme": "exact",
    "network": "eip155:8453",
    "mimeType": "application/json",
    "resource": "https://evm-watchdog-scan.fly.dev/agent/contract",
    "description": "",
    "maxAmountRequired": "50000",
    "maxTimeoutSeconds": 120
  }
]

Provenance

Seen in the source catalog

2026-10-01 18:35Z

Last indexed by Roundhouse

2026-10-21 17:46Z

Last enriched (probe, favicon, geo)

2026-10-05 11:15Z

x402 version

1

Max timeout

120s

Liveness probe

HTTP 402