api-change-check

api.firstmention.uk · x402

Compare two OpenAPI 3 JSON specs and get a precise breaking-change report: removed paths, renamed parameters, new required fields, type changes. $0.02 via x402.

Name and description as published by x402 Bazaar

Live

Last successful check: 1 Nov 2026, 22:34 UTC.

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

2 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 2 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 2 days; 30 are needed.
Independent paying walletsNot shown
2 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 2 Nov 2026, 00:38 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.firstmention.uk/s/api-change-check/compare

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

Who's behind it

Listed by: x402 Bazaarlast seen 1 Nov, 19:05 UTC
Wallets named: 0xddbee715feb5232af1f2b0f07392aaa0c712e572named by x402 Bazaar
Proven to belong to it: Nothing yet. Is it yours?
Listed since: 30 Oct 2026, 18:38 UTC

Payments

different wallets paid it, last 30 days: 2
paid calls, last 30 days: 2
last paid call (UTC): 30 Oct, 07:24

As the x402 Bazaar reports, from payments Coinbase's facilitator settled. Read 1 Nov 2026, 19:05 UTC. addrbook has not counted these payments itself.

How it asks to be paid

Network	Price	Paid in	Settled by	Pays to
Base	$0.02	USDC	Per request	0xddbee715feb5232af1f2b0f07392aaa0c712e572

From its own 402 answer at 1 Nov, 22:34 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.firstmention.uk	x402	Live	1 Nov, 22:34	1 Nov, 22:34	100%	100%	—

History

31 Oct 2026, 03:29 UTCPayment terms first read: $0.02 on Base, paid to 0xddbee715feb5232af1f2b0f07392aaa0c712e572.https://api.firstmention.uk/s/api-change-check/compare#1476038
31 Oct 2026, 03:29 UTCFirst recorded as answering.https://api.firstmention.uk/s/api-change-check/compare#1476036
30 Oct 2026, 18:38 UTCListed by the x402 Bazaar. The listing names wallet 0xddbee715feb5232af1f2b0f07392aaa0c712e572.the x402 Bazaar#1261988

Its whole history →

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-change-check-fb96822b/badge.svg)](https://addrbook.com/agents/api-change-check-fb96822b)