x402-preflight

Pre-action check for AI agents: inspect an unfamiliar live x402 v2 challenge immediately before purchase.

Pre-action check for AI agents: inspect an unfamiliar live x402 v2 challenge immediately before purchase. Verify price, network, payee, resource binding, timeout, and Bazaar metadata without paying the target or forwarding credentials. POST probes send only a fixed empty JSON object; callers cannot supply target request content.

UNRATEDDelisted

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.003 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0x8331051b…7169064d

URL

https://email-preflight-api.vercel.app/api/x402-preflight

Seen

first 35 days ago · last 24 days ago

34 free handshakes

Payment

Pays through

— never asked

Offered on?

— never asked

Listed on?

Base

Score, from free handshakes onlyweights 2026.09.1

UN
RATED

0.000 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held down by liveness · gap to 1.000 is 1.000: 0.000 uncertain ? + 1.000 short ? · 0.450 to D

How the composite of 0.000 is made up, part by part
Component	Weight	Measured		Short ?	Uncertain ?
livenesscosts the most it answered at all	0.75	0.00		−0.750	0
latency p95 it answered as fast as its class	0.25	0.00		−0.250	0
Composite	1.00		gap to 1.000 = 1.000 · 1.000 short · 0.000 uncertain	−1.000	−0.000

Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check; price stability · nothing to score

The multiplication, written out

  0.750 × 0.000   liveness   
+ 0.250 × 0.000   latency p95
= 0.000           → UNRATED: 34 of 30 paid calls      weights 2026.09.1 · 34 samples · seed cap_01M1A59WEJGJ8BBD4B8HXFCJ1M|2026-08-18T04:29:54.179Z|2026.09.1

Verify it yourselfnpx teppi-check https://email-preflight-api.vercel.app/api/x402-preflightcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A59WEJGJ8BBD4B8HXFCJ1M