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Previa aggregates market data from multiple prediction market platforms into a single interface. Each platform has different data availability and connection options.

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Kalshi

Kalshi is a US-regulated prediction market exchange (CFTC-regulated). Markets cover politics, economics, weather, tech, and more. What Previa pulls from Kalshi:
  • Live market listings and metadata
  • Real-time YES/NO prices
  • 24-hour volume and liquidity
  • Historical OHLCV price data (candlesticks)
  • Market resolution status
Portfolio tracking: Connect your Kalshi account using your API key and secret to track open positions and P&L. Available on Pro and Premium plans.

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Polymarket

Polymarket is a decentralized prediction market built on Polygon. It’s one of the largest prediction markets by volume. What Previa pulls from Polymarket:
  • Live market listings and metadata
  • Real-time YES/NO prices via the CLOB API
  • Volume and liquidity data
  • Historical price data
Portfolio tracking: Connect your Polymarket wallet address to track positions. Available on Pro and Premium plans.
Polymarket portfolio tracking is being improved. Currently, the connection validates your wallet address and fetches positions from the public CLOB API. Full on-chain USDC position reads are on the roadmap.

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Coming soon

Additional platforms are planned for future releases:
PlatformTypeStatus
MetaculusCommunity forecastingPlanned
ManifoldPlay-money prediction marketPlanned
PredictItPolitical prediction marketPlanned
Data from new platforms will appear in the same unified market scanner — no configuration needed on your end.