same-outcome-spread?includeIndicative=true&limit=3&minEdge=0&sources=polymarket%2Ckalshi%2Cgemini

Prediction market arbitrage and same-outcome spread API for Polymarket, Kalshi, and Gemini.

Prediction market arbitrage and same-outcome spread API for Polymarket, Kalshi, and Gemini. Finds YES or NO price gaps across venues.

UNRATEDListed

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.001 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0x81832eed…912fd3d5

URL

https://api.seerium.xyz/v1/prediction/arb/same-outcome-spread?includeIndicative=true&limit=3&minEdge=0&sources=polymarket%2Ckalshi%2Cgemini

Seen

first 9 days ago · last 11 hr ago

15 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

0.663 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 0.337: 0.284 uncertain ? + 0.053 short ? · 0.137 to B

How the composite of 0.663 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
livenesscosts the most it answered at all	0.60	1.00	0.527		0.316	0	−0.284
latency p95 it answered as fast as its class	0.20	0.73	0.733		0.147	−0.053	0
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.663	gap to 1.000 = 0.337 · 0.053 short · 0.284 uncertain	0.663	−0.053	−0.284

Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check

The multiplication, written out

  0.600 × 0.527   liveness       
+ 0.200 × 0.733   latency p95    
+ 0.200 × 1.000   price stability
= 0.663           → UNRATED: 13 of 30 paid calls      weights 2026.09.6 · 13 samples · seed cap_01M3BHG44AQ2QBQA39VSHD8B8J|2026-09-02T16:22:16.685Z|2026.09.6

Verify it yourself

npx teppi-check https://api.seerium.xyz/v1/prediction/arb/same-outcome-spread?includeIndicative=true&limit=3&minEdge=0&sources=polymarket%2Ckalshi%2Cgemini

curl -s https://api.teppi.xyz/v1/trust/cap_01M3BHG44AQ2QBQA39VSHD8B8J