DevX Base Tx Preflight

preflight.madebydevx.com · x402

Preflight any Base transaction before you sign it: simulates the call against latest state (success or decoded revert reason), estimates gas with a safe limit, and prices the full fee (L2 execution + L1 data upper bound) in ETH and USD, plus the ETH balance needed. 0.50 USDC via x402 on Base.

Name and description as published by x402 Bazaar

Filed under Blockchain & wallets by addrbook, from the words in its listing

Live

Last successful check: 12 Nov 2026, 18:29 UTC.

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

1 wallet 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 1 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 5 days; 30 are needed.
Independent paying walletsNot shown
1 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 12 Nov 2026, 00:22 UTC by method 2026.11.4, from its recorded evidence. A check that does not apply is left out of the count.

Connect

https://preflight.madebydevx.com/v1/preflight

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 12 Nov, 10:22 UTC
Wallets named: 0xb3cddccee6b150c8effd55b961afc0ecefe7f247named by x402 Bazaar
Proven to belong to it: Nothing yet. Is it yours?
Listed since: 6 Nov 2026, 20:22 UTC

Payments

different wallets paid it, last 30 days: 1
paid calls, last 30 days: 1
last paid call (UTC): 6 Nov, 05:09

As the x402 Bazaar reports, from payments Coinbase's facilitator settled. Read 12 Nov 2026, 10:22 UTC. addrbook has not counted these payments itself.

How it asks to be paid

Network	Price	Paid in	Settled by	Pays to
Base	$0.50	USDC	Per request	0xb3cddccee6b150c8effd55b961afc0ecefe7f247

From its own 402 answer at 12 Nov, 18:29 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
preflight.madebydevx.com	x402	Live	12 Nov, 18:29	12 Nov, 18:29	100%	100%	—

History

8 Nov 2026, 03:06 UTCPayment terms first read: $0.5 on Base, paid to 0xb3cddccee6b150c8effd55b961afc0ecefe7f247.https://preflight.madebydevx.com/v1/preflight#4140441
8 Nov 2026, 03:06 UTCFirst recorded as answering.https://preflight.madebydevx.com/v1/preflight#4140440
6 Nov 2026, 20:22 UTCListed by the x402 Bazaar. The listing names wallet 0xb3cddccee6b150c8effd55b961afc0ecefe7f247.the x402 Bazaar#3763754

Its whole history →

Also listed as

Other entries that share an endpoint with this one.

preflight.madebydevx.com

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/devx-base-tx-preflight-2147997b/badge.svg)](https://addrbook.com/agents/devx-base-tx-preflight-2147997b)