Endpoint · researchPOSTapiacre.com /v1/developer/x402-preflight
Probe a public endpoint without paying, grade its x402 v2 challenge, check exact-host x402-list presence and traction, and optionally rank licensed market matches with…
Read more
Probe a public endpoint without paying, grade its x402 v2 challenge, check exact-host x402-list presence and traction, and optionally rank licensed market matches with buyer-concentration caveats.Overview
Grade?
UNRATED
0 of 30 paid calls toward a letter
Price
$0.05 per call
Paid calls
none yet
delivery unknown until someone pays
More info
Seller?
Seen
first 35 days ago · last 3 days ago
64 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC, Solana
Listed on?
Base, Solana
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.814 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held down by latency p95 · gap to 1.000 is 0.186: 0.077 uncertain ? + 0.109 short ? · 0.086 to A
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| latency p95costs the most it answered as fast as its class |
0.20 | 0.50 | 0.460 | 0.092 | −0.100 | −0.008 | |
| liveness it answered at all |
0.60 | 0.98 | 0.870 | 0.522 | −0.009 | −0.069 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.814 | gap to 1.000 = 0.186 · 0.109 short · 0.077 uncertain | 0.814 | −0.109 | −0.077 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.200 × 0.460 latency p95
+ 0.600 × 0.870 liveness
+ 0.200 × 1.000 price stability
= 0.814 → UNRATED: 58 of 30 paid calls weights 2026.09.6 · 58 samples · seed cap_01M1A59QDT0KH4XX5PG9MB1N28|2026-09-02T07:58:55.710Z|2026.09.6
Verify it yourself
npx teppi-check https://apiacre.com/v1/developer/x402-preflightcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A59QDT0KH4XX5PG9MB1N28