x402tap.com
Find prediction-market questions priced differently on Polymarket vs. Kalshi — a cross-platform divergence signal built from data no single-platform competitor has
Go to this service →Our latest check (2026-10-11)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 133 ms
- Price
- $0.050 per call
- Paying buyers, last 30 days
- 5 (directory's own records)
- Paid calls, last 30 days
- 5
- Category
- Forecasts, signals and predictions
- Address
- https://x402tap.com/api/prediction-arb
Accuracy
Accuracy scores are published once a seller has enough paid checks against an independent record (at least 7 scored answers over at least 7 days). Until then no score is shown, and a missing score is never a pass.
For agents
This page as JSON: /sellers/20efa0a0920a.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).