Endpoint · computePOSTai-data-marketplace-1042299154756.us-central1.run.app /api/v1/x402_endpoint_preflight
Verify and lint a third-party x402 endpoint without paying it.
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Verify and lint a third-party x402 endpoint without paying it. Probe the live HTTP 402 challenge, validate x402 v2 and Base payment requirements, and check exact Coinbase Bazaar and 402index listing evidence before a buyer authorizes payment.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://ai-data-marketplace-1042299154756.us-central1.run.app/api/v1/x402_endpoint_preflight
Seen
first 34 days ago · last 20 days ago
42 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.3
UN
RATED
RATED
0.777 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held down by latency p95 · gap to 1.000 is 0.223: 0.100 uncertain ? + 0.123 short ? · 0.023 to B
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| latency p95costs the most it answered as fast as its class |
0.20 | 0.38 | 0.345 | 0.069 | −0.123 | −0.008 | |
| liveness it answered at all |
0.60 | 1.00 | 0.846 | 0.508 | 0 | −0.092 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.777 | gap to 1.000 = 0.223 · 0.123 short · 0.100 uncertain | 0.777 | −0.123 | −0.100 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.200 × 0.345 latency p95
+ 0.600 × 0.846 liveness
+ 0.200 × 1.000 price stability
= 0.777 → UNRATED: 40 of 30 paid calls weights 2026.09.3 · 40 samples · seed cap_01M1A59WCJW086TSVTRFB7D4HG|2026-08-21T06:48:09.268Z|2026.09.3
Verify it yourself
npx teppi-check https://ai-data-marketplace-1042299154756.us-central1.run.app/api/v1/x402_endpoint_preflightcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A59WCJW086TSVTRFB7D4HG