> Markdown version of [/tools/predexon](https://launchpoly.com/tools/predexon) — served by LaunchPoly, the directory of Polymarket, Kalshi and other prediction market tools. # Predexon Unified Data & Trading Works with[Polymarket](/tools?market=polymarket)[Kalshi](/tools?market=kalshi)[Opinion](/tools?market=opinion) [Data & APIs](/category/data), [Developer Tools](/category/api), [Aggregators](/category/aggregator) · freemium · API, Web [Visit website](https://predexon.com) Vote18 votes. Upvote Predexon Share ## About Predexon Predexon is a data and API infrastructure provider built for developers and traders working across prediction markets. It offers tick-level orderbook history captured from its own nodes and indexed from the chain, with trade and price history going back to 2020 and an always-on recorder logging every orderbook event. Data can be aggregated to any resolution from raw ticks up to hourly, covering Polymarket, Kalshi, and Opinion, with additional reference data from Limitless, Predict.fun, and Binance. Users can quote a slice of data for free before paying, then download it as compressed Parquet files via signed URLs, with free re-downloads within 24 hours. On the real-time side, Predexon runs a mempool-aware WebSocket that pushes Polymarket trades, prices, and orderbook updates up to five seconds before they confirm on Polymarket's own real-time data service, spread across seven channels with a single message schema and flat pricing. Beyond raw data, Predexon provides wallet analytics, PnL tracking, smart-money signals, and leaderboards computed directly from on-chain activity rather than scraped interfaces. A REST API covers markets, trades, orderbooks, wallets, and leaderboards through one key across venues, with Python, TypeScript, and cURL examples for getting started. The company states it has served over a billion API calls to more than a thousand developers, and lists several prediction market terminals, trackers, and analytics products built on its infrastructure. Pricing is freemium, with free credits and pay-per-use data access, and a unified trading API for Polymarket and Kalshi is described as rolling out. Predexon is a freemium data & APIs tool built for Polymarket, Kalshi and Opinion traders — Unified Data & Trading. It is listed in the LaunchPoly directory, where it was added on January 16, 2026 and currently has 18 community votes this round. Predexon is infrastructure for serious prediction market builders and traders. We provide clean, granular historical data, accurate cross-venue market matching, and low-latency real-time trade streams directly from chain. On top of the data layer, we’re rolling out a unified trading API that lets users trade across Polymarket and Kalshi through a single interface, without having to manage wallets or execution infrastructure themselves. ## Questions about Predexon ### What is Predexon? Predexon is a freemium data & APIs tool for Polymarket, Kalshi and Opinion. Unified Data & Trading ### Is Predexon free to use? Predexon is freemium: there is a free tier, with paid plans for advanced features. ### What category does Predexon belong to? Predexon is listed under Data & APIs, Developer Tools, Aggregators on LaunchPoly's prediction market tools directory. ### How is Predexon ranked on LaunchPoly? Predexon is ranked by community votes from real traders. Votes reset every other Sunday, and it currently has 18 votes this round. ## At a glance Category Data & APIs, Developer Tools, Aggregators Pricing freemium Works with Polymarket, Kalshi, Opinion Platforms API, Web Votes this round 18 Listed January 16, 2026 Updated October 27, 2026 ### Links [X](https://x.com/predexon)[Docs](https://docs.predexon.com) Report Support this tool ## Boost Predexon Give this listing a sponsored homepage card. Anyone can buy a Boost, including guests. - **3 days**$15 - **7 days**$29 - **14 days**$49 - Review available dates before paying - Clearly labelled as sponsored - Community votes and ranking stay unchanged Boost this listing One-time card payment. You are buying promotion, not ownership of the listing. [Choose another listing →](/boosts) Support this tool ## Boost Predexon Give this listing a sponsored homepage card. Anyone can buy a Boost, including guests. - **3 days**$15 - **7 days**$29 - **14 days**$49 - Review available dates before paying - Clearly labelled as sponsored - Community votes and ranking stay unchanged Boost this listing One-time card payment. You are buying promotion, not ownership of the listing. [Choose another listing →](/boosts) ## More like this [All Data & APIs](/category/data) [ ### DOZOR.BET Surebet scanner for esports and prediction markets: arbitrage betting across dozens of bookmakers… 47 votes this round ](/tools/dozorbet)[ ### Spectral Edge Physics-trained AI for BTC prediction markets. 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