the402 endpoint detail

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api.x402node.dev chain first-funder

https://api.x402node.dev/chain/first-funder

payable

Trace the first incoming transfer that funded a Base address: funder address, asset, amount, block and time. Pairs with x402 dewash for sybil cluster and burner wallet analysis. wallet funding source, first funder, who funded this wallet, sybil detection, wallet provenance, burner cluster Accepts payment on Base or Solana — either network works.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.01
Network
base
Pay to
0x4466d4A84b7c49a6A094ec6eef4a0712D6dd125e
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
46 ms
Payment options
2 usable of 2
Last checked
2026-08-10T09:18:06.756Z (1d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.x402node.dev%2Fchain%2Ffirst-funder"