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preflight402.com · x402

Call before signing or broadcasting a Bitcoin transaction. Decodes a raw transaction hex or a PSBT and returns inputs, outputs, script types, addresses, vsize, fee rate when derivable, and objective signals such as RBF, dust outputs, non-standard sighash flags and unsigned inputs. Parses only the bytes you send: no network access. Describes the transaction; never advises whether to sign it.
Name and description as published by x402 Bazaar

Live

Last successful check: 26 Oct 2026, 00:02 UTC.

answered, last 24 hours
100%
answered, last 30 days
100%
How addrbook checks →

Connect

https://preflight402.com/v1/btc/tx-inspect

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 UTC
Wallets named
  • 0xb9db3966c7f18283624c97e860a84cef7f9ba607named by x402 Bazaar
Listed since

Payments

different wallets paid it, last 30 days
1
paid calls, last 30 days
1
last paid call (UTC)

As the x402 Bazaar reports, from payments Coinbase's facilitator settled. Read . addrbook has not counted these payments itself.

Its x402 endpoints have not listed a payment option addrbook could read yet.

Checks by endpoint

HostProtocolStateLast checked (UTC)Last answered (UTC)24 hours30 daysTools
preflight402.comx402Live100%100%—

Also listed as

Other entries that share an endpoint with this one.