Endpoint · market dataGETapi.usenami.io /v1/perp/arbitrage/price
Cross-venue mark-price spread scan for crypto perpetuals — where the same perp trades at different marks across venues.
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Cross-venue mark-price spread scan for crypto perpetuals — where the same perp trades at different marks across venues. Quoted spread is not net edge: it excludes fees, slippage and funding differences.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://api.usenami.io/v1/perp/arbitrage/price
Seen
first 34 days ago · last 11 hr ago
64 free handshakes
Payment
Pays through
x402
Offered on?
Base USDC
Listed on?
Base
Score, from free handshakes onlyweights 2026.09.6
UN
RATED
RATED
0.721 liveness verified, no letter
To a letter · 30 paid calls
0 of 30
Held back by sample size, not by the seller · gap to 1.000 is 0.279: 0.242 uncertain ? + 0.037 short ? · 0.079 to B
| Component | Weight | Measured | Lower bound ? | Adds | Short ? | Uncertain ? | |
|---|---|---|---|---|---|---|---|
| latency p95costs the most it answered as fast as its class |
0.20 | 0.89 | 0.000 | 0.000 | −0.023 | −0.177 | |
| liveness it answered at all |
0.60 | 0.98 | 0.868 | 0.521 | −0.014 | −0.065 | |
| price stability the price stayed where it was listed |
0.20 | 1.00 | 1.000 | 0.200 | 0 | 0 | |
| Composite | 1.00 | 0.721 | gap to 1.000 = 0.279 · 0.037 short · 0.242 uncertain | 0.721 | −0.037 | −0.242 |
Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check
The multiplication, written out
0.200 × 0.000 latency p95
+ 0.600 × 0.868 liveness
+ 0.200 × 1.000 price stability
= 0.721 → UNRATED: 57 of 30 paid calls weights 2026.09.6 · 57 samples · seed cap_01M1A5A1VKH83E9HCXT9658A9F|2026-09-03T02:50:21.895Z|2026.09.6
Verify it yourself
npx teppi-check https://api.usenami.io/v1/perp/arbitrage/pricecurl -s https://api.teppi.xyz/v1/trust/cap_01M1A5A1VKH83E9HCXT9658A9F