api.x402node.dev/crypto/selector

api.x402node.dev · x402

Compute the 4-byte function/error selector and full keccak topic from a solidity signature, e.g. transfer(address,uint256). For decoding tx input prefixes and matching event topics. function selector, 4byte, method id, event topic, keccak signature Accepts payment on Base or Solana — either network works.

Name and description as published by x402 Bazaar

Filed under Crypto prices & DeFi by addrbook, from the words in its listing

Live

Last successful check: 9 Nov 2026, 05:18 UTC.

answered, last 24 hours: —
answered, last 30 days: 100%

4 different wallets paid it in the last 30 days, as the x402 Bazaar reports. Payments

How addrbook checks →

Evidence

1 of 4 shown

Answers when askedShown
Answered a check 19 hours ago.
Owner provenNot shown
No one has proven control of its domain or of the wallet it is paid at.
Track recordNot shown
Listed for 15 days; 30 are needed.
Independent paying walletsNot shown
4 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed.
Tool scanDoes not apply
Not an MCP server.

Decided 10 Nov 2026, 00:33 UTC by method 2026.10.2, from its recorded evidence. A check that does not apply is left out of the count.

Connect

https://api.x402node.dev/crypto/selector

x402: an unpaid request gets a 402 with the price and pay-to wallet. The check never pays.

Who's behind it

Listed by: x402 Bazaarlast seen 10 Nov, 05:53 UTC
Wallets named: 0x4466d4a84b7c49a6a094ec6eef4a0712d6dd125enamed by x402 Bazaar
Proven to belong to it: Nothing yet. Is it yours?
Listed since: 25 Oct 2026, 17:57 UTC

Payments

different wallets paid it, last 30 days: 4
paid calls, last 30 days: 4
last paid call (UTC): 3 Nov, 06:03

As the x402 Bazaar reports, from payments Coinbase's facilitator settled. Read 10 Nov 2026, 05:53 UTC. addrbook has not counted these payments itself.

How it asks to be paid

Network	Price	Paid in	Settled by	Pays to
Base	$0.01	USDC	Per request	0x4466d4a84b7c49a6a094ec6eef4a0712d6dd125e
Solana	$0.01	USDC	Per request	9urRvUx69HqAopg1JGV9P9wR7JdKoztzdkuNyJ8Eo1up

From its own 402 answer at 9 Nov, 05:18 UTC. USDC and Circle Gateway are recognised by their contract addresses, not by the names a seller gives them. How payments are read

Checks by endpoint

Host	Protocol	State	Last checked (UTC)	Last answered (UTC)	24 hours	30 days	Tools
api.x402node.dev	x402	Live	9 Nov, 05:18	9 Nov, 05:18	—	100%	—

History

3 Nov 2026, 19:55 UTCThe x402 Bazaar now reports 4 paying wallets over 30 days.the x402 Bazaar#2695728
2 Nov 2026, 19:30 UTCThe x402 Bazaar now reports 3 paying wallets over 30 days.the x402 Bazaar#2252057
31 Oct 2026, 19:04 UTCThe x402 Bazaar now reports 2 paying wallets over 30 days.the x402 Bazaar#1532105
30 Oct 2026, 18:50 UTCThe x402 Bazaar now reports 1 paying wallets over 30 days.the x402 Bazaar#1284083
27 Oct 2026, 11:49 UTCPayment terms first read: 2 options, from $0.01 on Base.https://api.x402node.dev/crypto/selector#462411
27 Oct 2026, 11:49 UTCFirst recorded as answering.https://api.x402node.dev/crypto/selector#462410
26 Oct 2026, 14:38 UTCListed by the x402 Bazaar. The listing names wallet 0x4466d4a84b7c49a6a094ec6eef4a0712d6dd125e. (already true when recording began)the x402 Bazaar#70403

Its whole history →

Also listed as

Other entries that share an endpoint with this one.

api.x402node.dev

Is it yours?

Prove you control one of its domains or wallets and it passes the owner check. You can then reply beside the evidence and get alerts when it changes. Claim this agent

Its evidence badge, for a README or a site. It shows the same count as this page, never a verdict.

[![addrbook evidence](https://api.addrbook.com/v1/agents/api-x402node-dev-crypto-selector-ff6cf55b/badge.svg)](https://addrbook.com/agents/api-x402node-dev-crypto-selector-ff6cf55b)