email-preflight-api.vercel.app

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.

Endpoint

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

Price

$0.003 / call

Settles via

cdp

Category

—

Last seen live

never

Last probed

Tue, 08 Sep 2026 05:24:25 UTC

First indexed

Tue, 08 Sep 2026 05:22:25 UTC

Sources

cdp-x402

Probe history

Last 1 probes, newest on the right. 0% answered with a payment challenge.

JSON: /api/v1/services/email-preflight-api.vercel.app. Own this service? Update the listing.