Observed arrival · 2026-10-13
402xAgent puts a check before the agent pays
A pre-payment checker for x402 endpoints that probes once without paying, compares the response with its listing, and returns a pay, skip, or recheck verdict.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Developers building x402-paying agents
- Worth noticing
- The free check allows one request per day per network; later checks can be dry-run, with nothing signed or paid.
Field notes
The integration examples wrap payment-enabled fetch or Axios clients, so the check sits in the request path rather than requiring a separate manual lookup. The page says a skipped request never sends its payment header, and that probes are reused for five minutes. Its displayed paid-check object includes network, canonical USDC, amount, payee, and deadline; the homepage also links to public receipts and a list of skips.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue