Supporting tools
The products are the grades (RuleScore), the contract Review, and the dispute database. Everything below is the working proof behind them — free, live, and honest about what it can and can't do. We grade the contract; the order flow is someone else's job.
The rigor demos
how we show our work — not products, proof of methodArbitrage Scanner depth-checked
Every curated cross-venue pair, net of BOTH legs' taker fees, and 'actionable' only after a live order-book depth check (≥25 contracts). Most screenshot 'arbs' die in fees; the rest die in depth.
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Market Differences live
The same proposition, two venues, side-by-side mids — with empty/stale books filtered out so the gaps are real.
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Whale Tracker live
Large prints across both venues with TRUE token sides (a SELL of an outcome is a bet against it); parlay tickers filtered.
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Cross-venue data
one normalized view of two venuesExplore /
One search across every live market on both venues, normalized.
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Dashboards Hub
Curated cross-venue dashboards for the marquee events.
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Fed Monitor
Cross-venue FOMC pricing, rate-path and cut-count curves.
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Volume Leaders
24h volume and liquidity rankings across both venues.
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Venue Dominance
Kalshi vs Polymarket share, overall and by category.
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Trader utilities
fee-true math, simulated onlyThe Paper Book
Fee-true paper trading with the venue's exact rounding and a settlement sweep. No real money (CFTC 4.41).
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Greeks Toolkit
Fee-adjusted edge, Kelly sizing, and the binary time-decay curve.
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These tools read public venue APIs for research and demonstration. They are not the product and not investment advice; the ratings, the Review, and the database are. Commercial, price-derived products stay Polymarket-first until a Kalshi data license lands.