Supported platforms

Documentation Index

Fetch the complete documentation index at: https://docs.useprevia.com/llms.txt

Use this file to discover all available pages before exploring further.

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, sports, and more. What Previa pulls from Kalshi:

• Live event and market listings with full metadata
• Real-time YES/NO prices
• 24-hour volume and liquidity
• Historical OHLCV price data (candlesticks)
• Market resolution status and outcome data
• Series and event groupings (markets organized into events)

Data freshness: Kalshi data is polled continuously. Prices and volume figures update whenever the poller fetches new data from the Kalshi Trade API. Portfolio tracking: Connect your Kalshi account using your API key and secret to track open positions and P&L. Available on Pro and Enterprise plans.

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Polymarket

Polymarket is a decentralized prediction market built on Polygon (an Ethereum Layer 2 network). It is one of the largest prediction markets by volume. What Previa pulls from Polymarket:

• Live event and market listings with full metadata
• Real-time YES/NO prices via the Central Limit Order Book (CLOB) API
• 24-hour volume and liquidity from the Gamma and Data APIs
• Historical price data (OHLCV candlesticks)
• On-chain condition IDs for independent verification

Data freshness: Polymarket data is fetched from three separate APIs (Gamma, Data, and CLOB) and merged into a single normalized record per market. On-chain verification: Every Polymarket market has a condition ID — a contract address on the Polygon blockchain. From any market’s detail page, click View on Polygonscan to inspect the contract directly. Portfolio tracking: Connect your Polymarket wallet address to track positions. Available on Pro and Enterprise plans.

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Data normalization

Previa normalizes data from both platforms into a common format:

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Coming soon

Additional platforms are planned for future releases: Data from new platforms will appear in the same unified market scanner — no configuration needed on your end.