Predictefy
Predictefy pulls live prices and order books from Polymarket, Kalshi, and other venues into one dashboard.
Predictefy: Multi Venue Prediction Market Terminal and Arbitrage Tool
What is Predictefy?
Predictefy is a non-custodial prediction market terminal that lets Polymarket, Kalshi, and other traders compare prices, spot arbitrage, and place orders from one dashboard.
Ready to try Predictefy?
Open the official site and get started in a few clicks.
Predictefy Overview
Predictefy is a data and trading terminal built for people who trade on prediction markets. It does not run its own markets or contracts. Instead, it pulls live prices, liquidity, order books, and volume from platforms like Polymarket, Kalshi, Hyperliquid, Limitless, and others, then lines them up in one screen. You get one place to check odds, compare markets, and place trades instead of ten browser tabs.
This tool is for traders who already split their capital across more than one platform. If you only ever use Polymarket and never check prices anywhere else, Predictefy will not change much for you. But if you want the best price on an election, sports, or crypto market and hate manually comparing spreads, this is built for that exact job. Market makers use it to spot cross-venue gaps. Developers use it to build bots and trading agents on top of the same feed through the API, SDK, and MCP server.
The core of Predictefy is market matching. It finds the same event listed across different platforms and shows side-by-side prices, implied probability, and available size. A live arbitrage feed flags price gaps between matched markets and shows if the spread is big enough to cover fees. When you find a trade you like, you place the order right inside Predictefy, and the system routes it to whichever venue has the better price and depth. For Kalshi trades, you connect your own API key, and the signing happens in your browser, so the platform never holds your credentials. A portfolio view then tracks your open positions and balances across every connected venue in one dashboard.
What sets Predictefy apart is the mix of live routing and historical depth. Most terminals give you a live feed or historical data, not both. Predictefy has multi-year OHLCV data going back to 2020 for research and backtesting, alongside the live arbitrage tools for active trading. It charges no platform fees of its own, so you only pay what the destination venue charges. Add in the developer tooling for building agents and bots, and it works as much as market infrastructure as it does a trading app.
Predictefy Key features
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Cross Venue Market Comparison
Predictefy matches the same event across different platforms and shows prices, probabilities, and liquidity side by side. Traders no longer need to check odds format by format on each site.
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Real Time Arbitrage Detection
A live feed tracks price gaps between matched markets and shows the spread size and liquidity on each side. Traders can quickly check if a gap covers fees and slippage before acting.
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Unified Trading and Routing
Users place orders directly inside Predictefy, and the system routes each order to the venue with the better price and liquidity. Kalshi orders use a locally signed API key and RSA key, so Predictefy never holds private keys.
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Market Analytics Dashboards
Dashboards show 24 hour volume, trending contracts, and top movers across venues. Users can filter by category or volume to find opportunities faster than browsing each platform alone.
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Historical OHLCV Data
Predictefy stores multi year open, high, low, close, and volume data for research and back testing. Traders can test a strategy before they risk real capital.
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Unified Portfolio View
Balances, open orders, and positions from every connected venue appear on one screen. This helps traders avoid missing an open position when their capital sits across multiple platforms.
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Developer SDK and MCP Server
Developers install the SDK through npm and use the MCP server to let AI agents query markets, spot arbitrage, and place orders under set limits. Full API access is currently open through private beta.
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Customizable Trade Layout
Traders can rearrange trade panels, order books, and data columns to match their own workflow. Each user sets up the interface the way they actually trade.
Predictefy Fees
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Platform trading fee Predictefy charges zero platform fees on trades executed across its supported venues.
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Destination venue fees Users still pay each venue's own fees, such as Polymarket's category dependent taker fees or Kalshi's contract based schedule.
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Gas costs Gas can be sponsored on several connected venues, so end users pay zero gas on those routes.
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Subscription cost No subscription fee is currently required for the core trading interface, though advanced API access may involve waitlist or enterprise arrangements.
How to use Predictefy
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Create your account
Go to predictefy.com and sign up, or log in with a wallet through the Privy login system.
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Browse markets and arbitrage
Open the markets or arbitrage section to see live contracts and matched events across platforms.
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Connect your Kalshi keys
If you want to trade on Kalshi, go to Settings and enter your Kalshi API key and RSA private key. All signing happens locally in your browser.
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Compare prices across venues
Pick a market and check the side by side prices, probabilities, and liquidity from each connected platform.
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Place your trade
Use the unified trade panel to send your order. Predictefy routes it to the venue with the better price and liquidity.
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Track your portfolio
Check the portfolio dashboard to see your open positions, balances, and exposure across all connected venues in one place.
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Request developer access
If you want the API or SDK, join the waitlist or book a call through the team calendar link on the site.
Predictefy Screenshots
Predictefy Review
Our verdict
Predictefy earns its place for one clear reason: it fixes the pain of trading prediction markets across many platforms at once. Instead of juggling tabs between Polymarket, Kalshi, Hyperliquid, and others, you get one screen with matched prices, live arbitrage gaps, and order routing that stays non custodial since your keys never leave your browser. The zero platform fee policy and the SDK/MCP tools for developers add real weight, and the historical OHLCV data going back to 2020 makes it useful for research too. It falls short in a few places: the team is small, full API access sits behind a waitlist, and there is no mobile app yet, so bugs and slow support are fair trade-offs for an early product. If you already split capital across two or more venues, or you build trading bots and need clean normalized feeds, Predictefy saves real time and effort. If you only trade on one platform and never compare prices, you will not get much from it.
Is Predictefy safe & legit?
Predictefy is built by a small, bootstrapped team led by co-founder Tafcir Majumder, who has past work at Token Metrics, Genzio, and Betu. It has earned some trust in the space through a grant from Superteam Malaysia and data mentions in Business Insider and Messari Solana reports. The tool is non-custodial, meaning your private keys and API credentials never leave your device, and no major red flags exist beyond the usual caution of using a newer platform, so start with small amounts and double check the site URL before you log in.
X account intel @Predictefy
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Based in Southeast Asia
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Joined X October 2025 1 year ago
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Username changes 1 rename last on Oct 31, 2025
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Signup source Web
Public profile signals from X. Use as one input alongside other due-diligence.
Security scan checked Nov 1, 2026
- Google Web Risk Not flagged
- MetaMask Not flagged
- Phantom Not flagged
- ScamSniffer Not flagged
- EtherAddressLookup Not flagged
- Keplr Wallet Not flagged
Domain predictefy.com checked against Google's lists of unsafe sites and public crypto wallet blacklists.
Predictefy FAQ
What is Predictefy?
Does Predictefy hold my funds or private keys?
How does the arbitrage detection work?
Are there fees to use Predictefy?
Can developers build on top of Predictefy's data?
Predictefy Updates
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Predictefy’s platform and API users are not affected by this issue.
While Predictefy integrates Polymarket markets, our infrastructure operates independently of Polymarket’s frontend.- 4 replies
- 2 reposts
- 19 likes
- 2K views
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Polymarket.com: The exchange is currently in cancel-only mode and relayer actions paused while we investigate an incident.
We're aware of an outage and are looking into it.
https://status.polymarket.com/cmvtuswgi00221bkzps7w21pt- 21 replies
- 15 reposts
- 149 likes
- 80.4K views
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Excited to be powering @poly_baskets with Predictefy's prediction market API.
From real-time market data to the infrastructure behind their indexes, we're helping builders bring new prediction market products to life.
One API, every prediction market.1 more in this thread
The Most Complete Prediction Market API: https://predictefy.com/en/prediction-market-api- 3 replies
- 5 reposts
- 31 likes
- 1.1K views
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Predictefy does not use PHP anywhere in our tech stack, and our platform is not affected. Our users are safe.
- 5 replies
- 3 reposts
- 27 likes
- 1.4K views
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TOKEN2049 Singapore is a Wrap! 🇸🇬
Great meeting builders, traders, customers, and partners, and people we’ve been speaking to online for the past year.
Some familiar faces, and a lot of new ones.
You can still find us at the side events.
- 8 replies
- 4 reposts
- 38 likes
- 1.5K views
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You wouldn't pay full price on an item at one store when it's cheaper somewhere else.
The same should apply in prediction markets.
Line shop.- 3 replies
- 4 reposts
- 36 likes
- 1.4K views
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WE WON'T MAKE IT
- 8 replies
- 1 reposts
- 46 likes
- 4K views
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Polymarket has 50% more crypto open interest, while Kalshi is generating 11.3x more notional volume.
We broke down the data across open interest, notional volume, and short-duration executed flow.
A deep dive into Kalshi vs Polymarket across crypto prediction markets. 🧵
2 more in this thread
7/ The Kalshi OI breakdown explains part of the apparent disconnect.
Across the Sept. 1–20 EOD sample:
• Long-dated OI averaged $22.20M
• Hourly OI averaged $0.95M
• Pre-TGE OI averaged just $0.03M
• Total crypto OI averaged $23.18M
Long-dated markets therefore represented roughly 96% of average Kalshi crypto OI.
Meanwhile, the shortest-duration markets closed with zero EOD OI on every measured day.
So a large amount of Kalshi’s short-duration volume is generated, settled and disappears from OI.
8/ That creates a clear structural divergence:
Polymarket has the larger total crypto OI: $38.57M vs $25.63M.
But Kalshi dominates short-duration turnover: $2.76B vs $227.94M over Sept. 1–21.
In other words:
Kalshi’s crypto market-share advantage is being driven heavily by short-duration turnover that does not remain in open interest after settlement.
Polymarket, by contrast, carries more outstanding crypto exposure while generating materially less short-duration flow.
Aggregate OI and volume establish that divergence.
They do not, by themselves, determine whether the excess turnover is organic, incentive-driven, or wash activity.- 7 replies
- 5 reposts
- 56 likes
- 2K views
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Polymarket US has flipped Polymarket notional volume for the first time.
September Notional Volume:
1. Polymarket US - $2,994,169,131
2. Polymarket - $2,270,776,406
It comes as Polymarket ramps up efforts to scale its US business, with NFL season driving a new wave of sports-market activity.
Polymarket has also climbed to the top of the sports app download charts.
Source: https://predictefy.com/en/analytics
- 3 replies
- 3 reposts
- 35 likes
- 1.3K views
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best odds only possible on @predofficial.
- 3 replies
- 4 reposts
- 31 likes
- 2.9K views
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$100 on Chelsea to beat Arsenal.
Payouts on prediction markets vs sportsbooks:
1. @SX_Bet - $533
2. @predofficial - $526
3. @bet_105 - $517
4. @Novig - $513
5. @ProphetX - $512
6. @Polymarket - $505
7. @FanDuel - $500
8. @Kalshi - $496
9. @predictdotfun - $490
10. @Duelbits - $490
11. @DraftKings - $490
12. @Stake - $490
13. @trylimitless - $477
14. @Bet365 - $475
15. @Betfair - $471
Prediction markets currently offer some of the strongest Chelsea moneyline payouts, with SX Bet leading at $533.
Among sportsbooks, Duel Bits offers the highest payout at $500.- 14 replies
- 4 reposts
- 81 likes
- 12.5K views
Predictefy Reviews & Comments
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Open the official site and get started in a few clicks.
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