Endpoint · computePOSTemail-preflight-api.vercel.app /api/x402-preflight
Pre-action check for AI agents: inspect an unfamiliar live x402 v2 challenge immediately before purchase.
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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.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?
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
Handshakescomputed 17 days ago
0.000 from 34 free handshakes over 30 days · UNRATED ?
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| livenesscosts the most it answered at all |
0.75 | 0.00 | 0.000 | 0.000 | −0.750 | 0 | |
| latency p95 it answered as fast as its class |
0.25 | 0.00 | 0.000 | 0.000 | −0.250 | 0 | |
| Composite | 1.00 | 0.000 | gap to 1.000 = 1.000 · 1.000 short · 0.000 uncertain | 0.000 | −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
BURN_INFREE_TIER_ONLY
Verify it yourself
npx teppi-check https://email-preflight-api.vercel.app/api/x402-preflightcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A59WEJGJ8BBD4B8HXFCJ1M