Predexon
Predexon gives developers one API to read data and execute trades across Polymarket, Kalshi, and four other prediction market venues.
Predexon API: Unified Data and Trading for Prediction Markets
What is Predexon?
Predexon is a unified API and data infrastructure layer for prediction markets, giving developers, quant traders, and AI agent builders a single integration to access real-time and historical data, smart wallet analytics, and order execution across Polymarket, Kalshi, and other major venues.
Predexon Overview
Predexon is an API and infrastructure layer for prediction markets. It pulls together real-time and historical data from Polymarket, Kalshi, Dflow, Limitless, Opinion, and Predict.Fun into a single integration, so developers stop writing venue-specific code and start shipping.
The problem it solves is fragmentation. Prediction market data sits across multiple chains, schemas, and platforms. Builders who want a trading terminal, copy trading bot, or portfolio dashboard normally need custom indexers and node operations for each venue. Predexon replaces all of that with one connection. Quantitative teams use it for cross-venue arbitrage detection and smart money signals. AI agent developers use the prompt-based integration and trading SDK to let agents place bets and handle payouts with no manual wallet steps.
On the data side, the unified API covers 38+ endpoints: order book snapshots, volume charts, open interest, candlestick data at one-minute, one-hour, and one-day intervals, historical trades, and wallet activity across all supported platforms. Responses are normalized and enriched with metadata, so applications consume data consistently regardless of which venue it came from.
WebSocket streaming delivers confirmed and pending trades, order book updates, and market lifecycle events with sub-100ms latency. Pending trades appear three to five seconds before on-chain confirmation, which outperforms direct platform connections on Polymarket flows. Builders get enriched events with full market and token details without polling or running their own nodes.
Smart wallet analytics tracks profitable addresses through leaderboards, profiling, similarity detection, and cohort analysis. Accuracy sits above 99%, which makes it reliable for copy trading logic or strategy research. Cross-venue market matching uses LLM-powered similarity scoring combined with thousands of manually labeled examples to link equivalent events across platforms, also at 99%+ accuracy. That means arbitrage research and unified portfolio views across Polymarket and Kalshi require no manual reconciliation.
The trading API and SDK handle wallet provisioning, gas funding, token approvals, signing, and routing. Creating an account, enabling venues, and placing a limit or market order takes three lines of code. Positions move through normalized lifecycles from active to resolved to redeemable, with payouts handled automatically.
Historical data goes back to 2020 and covers full order books, trades, and snapshots in OLAP-ready format on every plan. That supports backtesting and long-term modeling without extra storage or indexing costs. Core data endpoints are free and unlimited, with paid tiers adding higher rate limits and dedicated routing. Over 100 customers use Predexon in production, including quantitative teams and live prediction market applications.
Predexon Key features
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Unified Data API
Thirty-eight-plus endpoints cover markets, order books, volume charts, candlestick data, historical trades, and wallet activity across all supported venues. Responses are normalized and enriched with metadata, so applications read data consistently without separate queries per platform.
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Real-Time WebSocket Streaming
Live channels deliver confirmed trades, order book updates, and pending trades detected three to five seconds before on-chain confirmation, all under 100ms latency. Builders receive enriched events with full market and token details without polling or running their own nodes.
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Smart Wallet Analytics
Leaderboards, profiling, similarity detection, and cohort analysis track profitable addresses with 99%+ accuracy. Teams use this to identify smart money positions, realized profit and loss thresholds, and volume leaders for copy trading or strategy research.
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Cross-Venue Market Matching
An LLM-powered similarity model combined with thousands of manually labeled examples links equivalent events across platforms like Polymarket and Kalshi at 99%+ accuracy. Pre-computed matched pairs support arbitrage research and unified portfolio views without manual reconciliation.
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Trading API and SDK
Wallet provisioning, gas funding, token approvals, signing, and routing are all abstracted away, so users place limit or market orders in three lines of code. Private keys stay protected inside Turnkey hardware-backed enclaves, and Predexon never accesses them.
Predexon Videos
Predexon Screenshots
Predexon User Reviews
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Updated visuals of Polywallets.xyz and upgraded Predexon api plan because it was hitting rate limit
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Powered by @predexon - https://thetradefox.com/leaderboard
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You also can get Predexon API on MCP with usdc pay as you go, https://github.com/BlockRunAI/blockrun-mcp/
View on X ↗
Is Predexon safe & legit?
Predexon was built by Larry Pang and Jason Lee, both UC Berkeley graduates, and the project is backed by AllianceDAO. It has over a hundred customers including quantitative teams and live prediction market tools, and builders on X report reliable performance in production. No scam reports, security incidents, or red flags appear in available sources.
X account intel @predexon
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Joined X October 2025 8 months ago
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Username changes Never renamed
Public profile signals from X. Use as one input alongside other due-diligence.
Wallet blacklist scan checked Jun 17, 2026
- MetaMask Not flagged
- Phantom Not flagged
- ScamSniffer Not flagged
- EtherAddressLookup Not flagged
- Keplr Wallet Not flagged
Domain predexon.com checked against public crypto wallet blacklists.
Predexon Updates
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On Polymarket, the price is a blend of everyone trading the market, and it counts a wallet that's been profitable for years exactly the same as one that opened an account today. The number on the screen doesn't tell you who is behind it.
Predexon scores every Polymarket wallet on realized/unrealized P&L, fees, ROI, win rate, trade count, and more. so you can pull the skilled money back out of that blend. For any market you set the bar for what counts as skilled, say 15% ROI across 100 or more trades, then look at how those wallets are actually positioned: how many are net long versus short, the average price they got in at, and the volume behind it.
That changes what the price tells you. A market sitting at 38 cents looks like a plain 38% chance on its own. But if the wallets with real track records have been buying around 35 and are net long, you are not looking at a neutral 38 anymore. You are looking at a level that informed money already accumulated under. Same price, different trade.
You can also run it in reverse and rank markets by where skilled wallets are quietly building positions, so you find them before that flow shows up in the price.- 4 reposts
- 7 likes
- 257 views
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The fastest way to make a prediction-market backtest look better than it is: fill everything at mid.
Mid is not a tradable price. It's the halfway point between the best bid and the best ask. If your strategy wants to buy 20k, it doesn't fill at mid, it walks the asks that were actually there. Sometimes the first few levels cover it. Sometimes the trade gets expensive fast.
Predexon stores that book for Polymarket. Every time it changes, we snapshot every bid and ask, going back to January 2026. A backtest can replay the book as it was, walk the depth, and answer the only question that matters: what average fill would I have gotten for the size I trade? You get the whole slippage curve, not one number.
The endpoint is free and doesn't count against quota. And the live websocket book has the same shape as the snapshots, so the function that made the call in your backtest is the one running in production.- 2 reposts
- 8 likes
- 236 views
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We've known the Preddy team for a while and have been consistently impressed by their execution.
Excited to support part of the infrastructure behind the scenes and watch them continue to grow. ⚡️- 4 replies
- 1 reposts
- 13 likes
- 2.1K views
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Predexon Smart Order Router is now in beta.
1 Unified Wallet
1 USDC Balance
6 Exchanges
Trade across:
@Polymarket
@Kalshi
@trylimitless
@predictdotfun
@opinionlabsxyz
@HyperliquidX
Best-price execution.
Cross-venue order splitting.
Unified liquidity and orderbooks.
One API and execution layer for the entire prediction market ecosystem.
Prediction markets are fragmenting across chains, venues, and liquidity pools.
We’re building the infrastructure layer that makes all of it feel like a single exchange.
1 more in this thread
https://docs.predexon.com/trading-api/guides/order-router- 9 replies
- 8 reposts
- 36 likes
- 3.1K views
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love seeing people build on top of Predexon like this
- 4 replies
- 3 reposts
- 10 likes
- 1.1K views
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@HyperliquidX HIP-4 is now live on Predexon!
Trade across Polymarket, Predict, Opinion, Limitless, and Hyperliquid through one unified low-latency API
Same request shape. Same response shape. Wallets managed for you.
Every venue feels like one1 more in this thread
https://docs.predexon.com/trading-api/accounts/place-order- 1 replies
- 3 reposts
- 18 likes
- 850 views
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Limitless 🤝 Predexon
We’re excited to announce that @trylimitless is now fully integrated into Predexon.
Our Trading API now supports seamless execution on Limitless.
And with our market matching, equivalent markets across venues are automatically unified
What this unlocks:
• One API to trade across Limitless + other major venues
• Instant access to deeper, cross-venue liquidity
• No more rebuilding integrations or handling fragmentation
More coming soon 👀
1 more in this thread
https://docs.predexon.com/trading-api/introduction- 1 replies
- 5 reposts
- 24 likes
- 4.7K views
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Excited to partner with @PolyTechTrade to power a faster Polymarket trading experience.
PolyTech is building one of the most powerful Telegram-native trading terminals - instant execution, real-time portfolios, and seamless copy trading.
Predexon powers the infrastructure underneath.
Fast product × fast infra.
- 15 replies
- 4 reposts
- 56 likes
- 6.9K views
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