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Unified Prediction Market API (2026): One Schema for 15+ Venues
What a unified prediction market API is, what normalization covers, and how one schema and one key read Polymarket, Kalshi and 15+ venues.
API
Sports Prediction Market API (2026): Kalshi, Polymarket, Novig and More
Oct 18, 2026
API
Prediction Market WebSocket vs REST API (2026): When to Use Each
Oct 18, 2026
API
Prediction Market Order Book API (2026): Depth Across Every Venue
Oct 18, 2026
API
Prediction Market Historical Data API (2026): OHLCV for Every Venue
Oct 18, 2026
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Index196 entries
01Prediction Market MCP Server (2026): Connect AI Agents to Every VenueHow to connect Claude, Cursor and other AI clients to 15+ prediction market venues with one MCP server: setup, tools, paper trading and trading.APIOct 18, 2026→02Prediction Market Odds API (2026): Live Probabilities From Every VenueHow to get live prediction market odds from Polymarket and Kalshi, convert prices to American and decimal odds, and read 15+ venues at once.APIOct 18, 2026→03Prediction Market Data in Google Sheets and Excel (2026)How to pull live Polymarket and Kalshi prices into Google Sheets with Apps Script and into Excel with Power Query, with tested code and steps.APIOct 18, 2026→04How to Build a Prediction Market Dashboard With an API (2026)Build a live prediction market dashboard in about 40 lines of Node.js from Polymarket and Kalshi data, then scale it to 15+ venues with one API.APIOct 18, 2026→05Predictefy vs Tatum (2026): Polymarket and Kalshi APIs ComparedPredictefy vs Tatum for Polymarket and Kalshi data: venues, free plans, pricing, cross-venue features and trading, compared from official sources.ComparisonOct 18, 2026→06Prediction Market API Pricing (2026): What Every Provider ChargesWhat prediction market APIs cost in 2026: free venue APIs, Predictefy plans and credits, and published prices from other data providers.APIOct 18, 2026→07Predictefy vs FinFeedAPI (2026): Which Prediction Market API FitsPredictefy vs FinFeedAPI for prediction market data: venue coverage, credit pricing, interfaces, auth, cross-venue tools and trading compared.ComparisonOct 18, 2026→08Polymarket Liquidity Rewards (2026): How Maker Rebates WorkHow Polymarket liquidity rewards and maker rebates work: the scoring rule, epochs, rebate rates by category, and how to find rewarded markets.APIOct 18, 2026→09Polymarket Arbitrage Bot in Python (2026)Build a Polymarket arbitrage bot in Python: find YES/NO and negative-risk sets under $1 after fees, size them from depth, and place FOK orders.APIOct 15, 2026→10ProphetX API (2026): Access, Keys and What It CoversHow to get ProphetX API access in 2026: the Trading, Parlay and Market Data APIs, access and secret keys, the sandbox, endpoints and limits.APIOct 15, 2026→11Polymarket Subgraph (2026): GraphQL Endpoints and What Replaced ThemPolymarket's hosted subgraphs now return a deprecation error. What they indexed, why they stopped and which Data API routes replace them.APIOct 15, 2026→12Polymarket Top Holders API (2026): See Who Holds Each MarketPull any Polymarket market's top holders from the Data API, tell net from gross balances, and measure how concentrated each outcome really is.APIOct 15, 2026→13Polymarket RTDS to PolyBolt (2026): What Changed and How to MigratePolymarket moved reference prices from RTDS to PolyBolt. Here is the topic mapping, new auth, snapshots, limits, close codes, timeline and a checklist.APIOct 15, 2026→14Polymarket Heartbeat (2026): Keep WebSockets and Orders AliveHow Polymarket heartbeats work: the order heartbeat that cancels resting orders after 10 seconds, plus the PING and pong rules for every WebSocket.APIOct 15, 2026→15Polymarket Dune Analytics (2026): Dashboards, Queries and DataDune keeps curated Polymarket tables on Polygon. Here is which ones are free to query, plus SQL for daily volume, top markets and a wallet.APIOct 15, 2026→16Polymarket Comments API (2026): Read Market Comments in CodeRead Polymarket comments, replies and commenter positions with Gamma's comments API, and learn why polling has replaced the live stream.APIOct 15, 2026→17py-clob-client v2 (2026): Migrating to the Unified Polymarket SDKHow to move from py-clob-client-v2 to polymarket-client: install commands, auth changes, a method mapping table and the pitfalls to avoid.APIOct 12, 2026→18Polymarket Whale Tracker (2026): How to Track Big Wallets With the APITrack Polymarket whales with the public Data API: filter trades by dollar size, profile the wallets behind them and follow what they do next.APIOct 12, 2026→19Polymarket Perps (2026): How Perpetual Futures Work and the APIHow Polymarket Perps works in 2026: 88 markets up to 50x, hourly funding, fees, margin, invite codes, liquidity rewards and the REST and WebSocket API.APIOct 12, 2026→20Kalshi 15 Minute Bitcoin Bot (2026): How to Build One With the APIBuild a Kalshi 15 minute Bitcoin bot: find the live KXBTC15M window, read its CF Benchmarks rules, fund shard 2, and place and cancel orders.APIOct 12, 2026→21Prediction Market TradingView Charts (2026): Polymarket and KalshiTradingView does not list Polymarket or Kalshi markets. How to feed their candles and live trades into an Advanced Charts datafeed.APIOct 7, 2026→22Polymarket Sports API (2026): Live Scores, Markets and StreamsPolymarket sports data in 2026: Gamma sports, market type and team endpoints, game events, and live scores from the public Sports WebSocket.APIOct 7, 2026→23Polymarket Builders Program (2026): Builder Codes, Tiers and RewardsHow the Polymarket Builders Program works: bytes32 builder codes, fee caps of 1% taker and 0.5% maker, tier limits, rewards and the public leaderboard API.APIOct 7, 2026→24Novig API (2026): Access, Keys and DocumentationHow the Novig API works in 2026: management and trading keys, NOVIG-V3 request signing, public endpoints, rate limits and the WebSocket.APIOct 7, 2026→25Polymarket POLY Token (2026): Everything You Need to KnowPolymarket's CEO said at Token2049 it is exploring an on-chain asset. What is confirmed about POLY: launch date, airdrop, pUSD and fake tokens.BasicsOct 7, 2026→26Polymarket Search API (2026): Find Markets and Events by KeywordSearch Polymarket events, markets and trader profiles by keyword with Gamma's public-search endpoint, including its tag and status filters.APIOct 5, 2026→27Polymarket Order Types (2026): GTC, GTD, FOK and FAK ExplainedPolymarket's four order types explained: GTC, GTD, FOK and FAK, plus post-only, GTD expiry rules, SDK and API fields, and the errors that reject orders.APIOct 5, 2026→28Polymarket and Kalshi Rust SDKs (2026): Clients and ExamplesPolymarket's official Rust crate and the community crates for Kalshi in 2026: versions, feature flags, the CLOB host to set and a first example.APIOct 5, 2026→29Polymarket Deposit Wallet (2026): How It Works and the APIWhat a Polymarket Deposit Wallet is, how it differs from proxy and Safe wallets, how to find its address, and how gasless WALLET batches work.APIOct 5, 2026→30Polymarket Combos (2026): How Parlays and the RFQ API WorkHow Polymarket Combos work: multi-leg YES and NO positions priced by RFQ, the requester and market maker APIs, builders, collateral return and settlement.APIOct 5, 2026→31Kalshi Whale Tracker (2026): How to Spot Big Trades With the APIKalshi trades carry no user IDs, so a whale tracker follows size. How to pull big trades, block trades and order book walls from Kalshi's API.APIOct 5, 2026→32Kalshi Subaccounts API (2026): Create, Fund and Trade ThemHow Kalshi subaccounts work: the Advanced tier rule, the 63 limit, the create and transfer endpoints, restricted API keys and the subaccount field.APIOct 5, 2026→33Kalshi Sports API (2026): Markets, Odds and Live DataHow Kalshi organizes sports into series, events and markets, how to pull a league's games and odds, and how to get live scores from the API.APIOct 5, 2026→34Polymarket Tick Size (2026): Minimum Ticks, Changes and the APIPolymarket tick sizes run from 0.1 to 0.0001 and can change mid-market. How to read the active tick, catch changes and avoid rejected orders.APIOct 2, 2026→35Polymarket Price to Beat API (2026): How to Get the Start PricePolymarket publishes the price to beat for crypto Up or Down markets in the Gamma API, but minutes late. How to read it, and how to track it live.APIOct 2, 2026→36Kalshi Incentive Program (2026): Liquidity Rewards and the APIKalshi pays resting liquidity from pools of $1 to $1,000 per market per day. How the scoring works and how to pull every program from the API.APIOct 2, 2026→37Kalshi Demo API (2026): Keys, URL and EndpointsThe Kalshi demo API mirrors production with mock funds and separate keys. The demo URLs, how to get a demo key, and what changes when you go live.APIOct 2, 2026→38Polymarket US API (2026): Keys, Endpoints and Rate LimitsThe Polymarket US API pairs a no-key public gateway for market data with a signed API for trading, limited to 25 requests a second.APIOct 2, 2026→39Polymarket Redeem API (2026): How to Redeem Winning PositionsRedeem Polymarket winnings with one SDK call or a gasless relayer transaction, plus the checks that fix most failed redemptions.APIOct 2, 2026→40Polymarket Contract Addresses (2026): CTF, Exchange and pUSDEvery Polymarket contract address on Polygon, from the CTF Exchange and Neg Risk exchange to pUSD and the collateral adapters, and when to use each.APIOct 2, 2026→41Kalshi MCP Server (2026): Connect Claude to Kalshi MarketsKalshi's own MCP server searches its docs. To give Claude live Kalshi markets, order books and trading, connect Predictefy's MCP server in one line.APIOct 2, 2026→42Predictefy vs Polysights: The Best Polysights Alternative (2026)Predictefy is the best Polysights alternative: 15+ venues, an API, SDKs and MCP server available today, and smart money across nine venues.ComparisonSep 28, 2026→43Predictefy vs Polymarket Analytics: Best Alternative (2026)Predictefy is the best Polymarket Analytics alternative: trader data across nine venues and market data across 15+, with commercial use from $149.ComparisonSep 28, 2026→44Predictefy vs Betmoar: The Best Betmoar Alternative (2026)Predictefy is the best Betmoar alternative: 15+ venues in one terminal and API, with cross-venue arbitrage and smart money, where Betmoar covers Polymarket.ComparisonSep 28, 2026→45Predictefy vs Hashdive: The Best Hashdive Alternative (2026)Predictefy is the best Hashdive alternative: smart money across nine venues and an API on every plan, now that Hashdive is Unusual Predictions.ComparisonSep 28, 2026→46Predictefy vs ArbBets: The Best ArbBets Alternative (2026)Predictefy is the best ArbBets alternative: arbitrage across 15+ venues with its API from $48.88 a month, where the ArbBets API starts at $299.ComparisonSep 28, 2026→47We Gave Claude Opus 5.5 and GPT-6 Sol $100 Each to Trade Polymarket Bitcoin. Here's Who WonIn our Polymarket test, GPT-6 Sol grew $100 to $168.54 on 5-minute Bitcoin markets, while Claude Opus 5.5 won 71% of its trades and still lost $2.21.ComparisonSep 27, 2026→48Polymarket Relayer API (2026): Gasless Transactions ExplainedPolymarket's relayer submits signed wallet transactions with no gas, using builder or relayer keys. Predictefy returns unsigned steps you sign.APISep 27, 2026→49Kalshi Weather Bot (2026): How to Build One With the APIKalshi weather bots price KXHIGHNY brackets from forecasts, and the markets settle on The Weather Company data. Test yours on Predictefy paper trading.APISep 27, 2026→50Kalshi RFQ API (2026): Request for Quote and Block TradesKalshi's RFQ API gets private maker quotes on a market and size, then accept and confirm. Predictefy prices the same outcome across 15+ venues.APISep 27, 2026→51Polymarket Paper Trading (2026): How to Practice for FreePolymarket's docs offer no demo account. Predictefy paper trading fills simulated orders against Polymarket's live order books, free on every plan.APISep 26, 2026→52Polymarket Leaderboard API (2026): How to Pull Top TradersPolymarket ranks traders through GET /v2/leaderboard by PnL or volume. Predictefy adds leaderboards across four venues and a smart-money feed.APISep 26, 2026→53Polymarket CLOB API (2026): Keys, Endpoints and Rate LimitsPolymarket's CLOB API serves order books publicly and takes orders with L1 and L2 signed keys. Predictefy reads it with 15+ venues on one key.APISep 26, 2026→54Kalshi SDK (2026): Which One to Install and WhyKalshi's official SDKs are kalshi_python_sync, kalshi_python_async and kalshi-typescript. Predictefy's SDK adds 15+ venues through one client.APISep 26, 2026→55Kalshi Paper Trading (2026): Demo Account vs Real Order BooksKalshi's demo uses mock funds on a separate exchange. Predictefy paper trading fills against Kalshi's real order books, free on every plan.APISep 26, 2026→56Predictefy vs PolyRouter: Best Alternative (2026)Predictefy is the best PolyRouter alternative for production: live across 16 venues with published pricing, where PolyRouter is a 7 venue open beta.ComparisonSep 24, 2026→57Predictefy vs PredictFolio: Best Alternative (2026)Predictefy is the best PredictFolio alternative: trader analytics across 9 venues, market data across 16, and a full API where PredictFolio is a website.ComparisonSep 24, 2026→58Predictefy vs Predictions Terminal (2026)Predictefy is the best Predictions Terminal alternative: 16 venues and live trading, where Predictions Terminal covers 2 venues with paper trading only.ComparisonSep 24, 2026→59Predictefy vs Predicts.guru: Best Alternative (2026)Predictefy is the best Predicts.guru alternative: wallet analytics across 9 venues through an API, where Predicts.guru is a Polymarket-only website.ComparisonSep 24, 2026→60Predictefy vs Stand: The Best Stand Alternative (2026)Predictefy is the best Stand alternative: 16 venues in one terminal against Stand's 2, with arbitrage scanning, a smart-money feed and a full API.ComparisonSep 24, 2026→61Predictefy vs Dome API: The Best Dome Alternative (2026)Predictefy is the best Dome API alternative. Dome's APIs reached end of life after Polymarket acquired it, and Predictefy covers both its venues plus 14 more.ComparisonSep 24, 2026→62Predictefy vs Kairos: The Best Kairos Alternative (2026)Predictefy is the best Kairos alternative, with 16 venues against Kairos' 4, published pricing from a free plan, and execution not capped at 5 orders a second.ComparisonSep 24, 2026→63Predictefy vs PMXT: The Best PMXT Alternative (2026)Predictefy is the best PMXT alternative for building a product: commercial use from $149, where PMXT plans are personal use only, and 16 venues against 10+.ComparisonSep 24, 2026→64Predictefy vs PolyBackTest: Best Alternative (2026)Predictefy is the best PolyBackTest alternative: 16 venues and every market type, with backtesting, paper trading and live orders in one integration.ComparisonSep 24, 2026→65Predictefy vs Bitquery Polymarket API (2026)Predictefy is the best Bitquery Polymarket API alternative: live order books, trading and 16 venues, where Bitquery serves read-only on-chain Polymarket data.ComparisonSep 24, 2026→66How to Increase Your Polymarket Rate Limit (2026)Raising a Polymarket rate limit depends on the limiter: trading tiers rise with volume, Builder tiers by approval. Predictefy publishes limits up to 3,000 a minute.APISep 20, 2026→67How to Increase Your Kalshi Rate Limit (2026)Raise your Kalshi rate limit free with one call that upgrades Basic to Advanced permanently. Predictefy publishes its own limits up to 3,000 requests a minute.APISep 20, 2026→68Polymarket Proxy Wallet: Find It and Use It via APIOn Polymarket the signing address and the funded wallet usually differ, which breaks most API integrations. Predictefy keeps signing in your own process.APISep 19, 2026→69How to Find a Polymarket Market ID and Condition IDA Polymarket market carries five identifiers that are not interchangeable, from the Gamma id to CLOB token ids. Predictefy gives each outcome one normalized id.APISep 19, 2026→70Polymarket Gamma API: Discovery Across 16 VenuesThe Gamma API is Polymarket's native catalog of events, markets and CLOB token ids. Predictefy normalizes market discovery across 16 venues with one method.APISep 19, 2026→71Polymarket API Keys Explained: Reads, Trading and AuthYou need no Polymarket API key for public reads; trading needs a wallet signature and CLOB credentials. One Predictefy key reads Polymarket and 15 more venues.APISep 19, 2026→72Polymarket API Rate Limits: Gamma, CLOB, and DataPolymarket publishes every endpoint's rate limit, from 1,500 per 10 seconds on CLOB books to 300 on Gamma markets. Predictefy publishes limits up to 3,000 a minute.APISep 19, 2026→73Polymarket Data API: Trades, Positions and Wallet ActivityPolymarket's Data API v2 serves public wallet trades, positions and activity with cursor pagination. Predictefy adds a normalized trade tape and wallet intelligence.APISep 19, 2026→74Kalshi Order Book API: Depth in TypeScript and PythonKalshi's order book returns YES and NO bid ladders with no explicit asks. Predictefy converts them into a normalized book with bids and asks in TypeScript or Python.APISep 19, 2026→75Kalshi FIX API: Access, Specs, and Who QualifiesKalshi's FIX gateway runs six session types on two hosts, reusing your REST API key pair. Predictefy adds one normalized API across Kalshi and 15 more venues.APISep 19, 2026→76Prediction Market Arbitrage SDK: TypeScript QuickstartInstall the Predictefy SDK and call client.router.fetchArbitrage to price arbitrage across 16 venues in TypeScript, with typed errors and normalized responses.APISep 17, 2026→77How to Use a Prediction Market Arbitrage API Across Multiple VenuesUse an arbitrage API across venues by separating discovery, matching and live-ask assessment. Predictefy runs every step for 16 venues behind one API.APISep 17, 2026→78Best Institutional Prediction Market API (2026)Predictefy is the best institutional prediction market API of 2026, with normalized data, matching, assessed arbitrage and guarded execution across 16 venues.APISep 17, 2026→79How to Build an AI Prediction Market Arbitrage Agent With an API and SDKBuild an AI arbitrage agent by keeping the money logic deterministic and the model's role narrow. Predictefy's API and SDK supply matched markets and assessed books.APISep 17, 2026→80Prediction Market Trading Terminal (2026)Predictefy leads the prediction market trading terminal category, with discovery, live prices, depth and cross-venue comparison across 16 venues in one place.ToolsSep 16, 2026→81Polymarket Order Book API (2026): How to Get Live DepthPolymarket's order book API returns live depth per CLOB token id, with no auth needed to read. Predictefy returns normalized books for Polymarket and 15 more venues.APISep 16, 2026→82Polymarket Kalshi Arbitrage Scanner (2026)A Polymarket Kalshi arbitrage scanner matches equivalent contracts and prices YES against NO after depth and fees. Predictefy is the scanner that does all of it.StrategySep 16, 2026→83Kalshi API vs Polymarket API: Which Should You Build On?Build on Kalshi or Polymarket directly for a single-venue product. For anything comparing both, Predictefy is the better foundation, normalizing 16 venues.APISep 16, 2026→84Prediction Market Arbitrage Finder (2026)Predictefy is the best prediction market arbitrage finder, checking gaps across 16 venues against live asks, both venues' fees and matching resolution rules.StrategySep 15, 2026→85Polymarket API Arbitrage: Building the ScannerA Polymarket arbitrage scanner pulls the catalog, matches events across venues, compares live asks and gates on fees and rules. Predictefy runs all four stages.APISep 15, 2026→86Kalshi Trading Terminal (2026): What Traders Actually UsePredictefy is the leading Kalshi trading terminal, reading Kalshi as one of 16 venues with real depth and cross-venue context in one view.ToolsSep 15, 2026→87Best Polymarket Terminal (2026)Predictefy is the best Polymarket terminal, reading Polymarket beside 15 more venues on one schema, with depth, movers and wallet activity in one screen.ToolsSep 15, 2026→88Limitless and Polymarket Arbitrage (2026)Limitless and Polymarket price many of the same events differently but settle on different chains, Base and Polygon. Predictefy matches and checks those gaps.StrategySep 14, 2026→89Limitless Exchange API (2026): Endpoints, Keys, LimitsThe Limitless API is open for reads and needs a scoped token plus an HMAC signature to trade. Predictefy serves Limitless and 15 more venues through one API.APISep 14, 2026→90Is Prediction Market Arbitrage Worth ItPrediction market arbitrage pays off far less often than screens suggest, since gaps must survive spreads and fees. Predictefy shows which ones actually do.ArbitrageSep 14, 2026→91How to Get Alerts for Prediction Market ArbitrageTrigger arbitrage alerts on live order books over a WebSocket, not midpoints on a timer, because gaps close in seconds. Predictefy streams books across 16 venues.ArbitrageSep 14, 2026→92Polymarket MCP Server: Connect Claude to Live Markets (2026)A Polymarket MCP server lets Claude fetch live markets itself. Predictefy's installs in one line and covers Polymarket plus 15 more venues through the same tools.APISep 11, 2026→93Polymarket Historical Data: Where to Download It (2026)Polymarket serves no deep historical order book archive, so traders use a provider. Predictefy serves Polymarket candles from 1 second to 1 day, with provenance.DataSep 11, 2026→94Polymarket WebSocket API: Limits, Ping and PythonPolymarket's public CLOB WebSocket streams after a two-field subscribe, with a PING every 10 seconds. Predictefy streams 16 venues over one connection.APISep 10, 2026→95Kalshi WebSocket API: Rate Limits, Orderbook and ExamplesThe Kalshi WebSocket API authenticates in the handshake and streams a snapshot, then deltas. Predictefy streams Kalshi and 15 more venues over one connection.APISep 10, 2026→96What is The Best Oddpool Alternative?Predictefy is the best Oddpool alternative, covering 16 venues behind one normalized schema with a free plan of 25,000 credits a month and live streaming.APISep 9, 2026→97Best Prediction Market Data API (2026)Predictefy is the best prediction market data API of 2026, normalizing 16 venues behind one schema with a free plan of 25,000 credits a month and live streaming.APISep 9, 2026→98How to Scan All Prediction Markets for Arbitrage at OnceScan every prediction market for arbitrage at once by reading 16 venues through one schema, then checking gaps against live books. Predictefy does both.ArbitrageSep 5, 2026→99How Much Money Can You Make from Prediction Market ArbitrageSerious prediction market arbitrage clears a low single-digit percentage per qualified pair, capped by depth. Predictefy qualifies every pair against live books.ArbitrageSep 5, 2026→100How Do I Make My First Prediction Market API CallYour first prediction market API call is one authenticated GET. With Predictefy it takes a free key and returns normalized markets from any of 16 venues.APISep 5, 2026→101Can you change the price of a limit order on Kalshi?Yes: Kalshi changes a resting limit price by cancel and replace, sending the order to the back of the queue. Predictefy shows the live book so you price it first.BasicsSep 5, 2026→102How to Track Probability Shifts Across Prediction MarketsTrack probability shifts from live bids and asks on every venue, not midpoints, and ignore moves with no book behind them. Predictefy streams books across 16 venues.Prediction MarketsSep 4, 2026→103How to Use an LLM to Analyze Prediction MarketsUse an LLM for reasoning, never for prices: give it live order books through a tool layer. Predictefy's MCP server hands any model live data from 16 venues.Prediction MarketsSep 4, 2026→104How to Track 5 Minute Bitcoin Markets on Kalshi and PolymarketPolymarket runs 5 minute Bitcoin markets while Kalshi's shortest is 15 minutes, and shorter is not more tradable. Predictefy streams both venues live.Prediction MarketsSep 3, 2026→105How to Track 15 Minute Bitcoin Markets on Kalshi and PolymarketKalshi's KXBTC15M and Polymarket's BTC Up or Down 15m track 15 minute Bitcoin moves, which calls for streaming, not polling. Predictefy streams both.Prediction MarketsSep 3, 2026→106Is There One API for All Prediction MarketsNo official one exists, but Predictefy is the closest thing: one key, one schema and one base URL that read 16 prediction market venues.Prediction MarketsSep 3, 2026→107How to Tell If a Prediction Market Is MispricedA prediction market is mispriced when the tradable price differs from the true odds, not when a midpoint looks off. Predictefy checks bids, depth and fees for you.Prediction MarketsSep 3, 2026→108Prediction Market Arbitrage: 5 Live Opportunities Identified on 2nd SeptemberPredictefy flagged five arbitrage candidates on Polymarket and Kalshi on 2 September 2026, gaps of 3.0 to 7.5 cents, led by J.D. Vance for the 2028 nomination.Prediction MarketsSep 2, 2026→109Prediction Market Arbitrage: 5 Live Opportunities Identified on 1st SeptemberPredictefy flagged five arbitrage candidates on Polymarket and Kalshi on 1 September 2026, gaps of 1.0 to 7.0 cents, led by Real Madrid to win La Liga.Prediction MarketsSep 2, 2026→110Prediction Market Arbitrage: 5 Live Opportunities Identified on 31st AugustPredictefy flagged five arbitrage candidates on Polymarket and Kalshi on 31 August 2026, gaps of 2.0 to 4.0 cents, led by Real Madrid to win the Champions League.Prediction MarketsAug 31, 2026→111Prediction Market Arbitrage: 5 Live Opportunities Identified on 30th AugustPredictefy flagged five arbitrage candidates on Polymarket and Kalshi on 30 August 2026, gaps of 2.0 to 5.6 cents, led by J.D. Vance for the 2028 nomination.Prediction MarketsAug 30, 2026→112Prediction Market Arbitrage: 5 Different Live Opportunities Identified on 29th AugustPredictefy flagged five arbitrage candidates on Polymarket and Kalshi on 29 August 2026, gaps of 2.2 to 3.0 cents, led by Barcelona to win La Liga.Prediction MarketsAug 28, 2026→113Prediction Market Arbitrage: 5 Live Opportunities Identified on 28th AugustPredictefy flagged five arbitrage candidates on Polymarket and Kalshi on 28 August 2026, gaps of 3.9 to 6.0 cents; four held up against Kalshi's live book.Prediction MarketsAug 28, 2026→114Prediction Market Arbitrage: 5 Live Opportunities Identified on 27th AugustPredictefy flagged five arbitrage candidates on Polymarket and Kalshi on 27 August 2026, gaps of 2.5 to 4.0 cents, led by Real Madrid to win La Liga.Prediction MarketsAug 27, 2026→115How to Build a Prediction Market Screener With an APIBuild a prediction market screener by pulling every market in one router call, then filtering on price, time and liquidity. Predictefy searches all 16 venues.Prediction MarketsAug 27, 2026→116Prediction Market Arbitrage: 5 Live Opportunities Identified on 26th AugustPredictefy flagged five arbitrage candidates on Polymarket and Kalshi on 26 August 2026, gaps of 2.7 to 4.6 cents, led by Marine Le Pen winning in France.Prediction MarketsAug 25, 2026→117Robinhood Prediction Markets API: What Exists in 2026Robinhood publishes no trading API for event contracts, which trade only in its app. Predictefy offers one API across 16 prediction market venues instead.Prediction MarketsAug 25, 2026→118How to Build Prediction Market Copy Trading With an APIBuild prediction market copy trading by watching the public trade tape and mirroring fills through an execution API. Predictefy provides both across its venues.Prediction MarketsAug 25, 2026→119SX Bet API (2026): Endpoints and AuthenticationThe SX Bet API is free and open for market data, with one header and an EIP-712 signature to trade. Predictefy serves SX Bet and 15 more venues in one API.Prediction MarketsAug 25, 2026→120Prediction Market MCP Servers and AI Agent Tools (2026)Predictefy's MCP server covers Polymarket, Kalshi and 14 more venues in one install, where Polymarket and Kalshi ship no official MCP server of their own.APIAug 24, 2026→121How to Build Prediction Market Price Alerts With an APIBuild prediction market price alerts by polling order books or subscribing over WebSocket, then firing on a threshold. One Predictefy key alerts across 16 venues.APIAug 24, 2026→122How to Build a Prediction Market Telegram Bot With an APIA prediction market Telegram bot is two calls: stream order books from Predictefy and post to Telegram on a threshold. One key watches all 16 venues.APIAug 24, 2026→123Prediction Market Arbitrage: 5 Live Opportunities Identified on 25th AugustPredictefy flagged five arbitrage candidates on Polymarket and Kalshi on 25 August 2026, gaps of 4.9 to 8.0 cents, led by Mohammed bin Salman meeting Trump.NewsAug 24, 2026→124How to Stream Live Prediction Market Prices With a WebSocket APIStream live prediction market prices over one Predictefy WebSocket: subscribe, get a snapshot, then an update on every tick across 16 venues on the free plan.APIAug 23, 2026→125Prediction Market Arbitrage: 5 Live Opportunities Identified on 24th AugustPredictefy flagged five arbitrage candidates across Polymarket and Kalshi on 24 August 2026, with gross gaps of 3.5 to 6.5 cents, led by Kim Jong Un meeting Trump.Prediction MarketsAug 23, 2026→126Prediction Market Arbitrage: 5 Live Opportunities Identified on 23rd AugustPredictefy flagged five arbitrage candidates across Polymarket and Kalshi on 23 August 2026, with gross gaps of 2.5 to 5.0 cents, led by Pope Leo XIV meeting Trump.ArbitrageAug 23, 2026→127Are Prediction Markets Legal in Singapore? (2026)No. Singapore bars gambling with unlicensed providers, has blocked Polymarket since January 2025, and penalizes individuals as well as operators. Here is the law.Prediction MarketsAug 22, 2026→128Are Prediction Markets Legal in the Netherlands? (2026)Most real-money prediction markets cannot legally be offered in the Netherlands in 2026, and the Kansspelautoriteit upheld enforcement against Polymarket in June.Prediction MarketsAug 21, 2026→129Prediction Market Arbitrage: 5 Live Opportunities Identified on 22nd AugustPredictefy flagged five arbitrage candidates across Polymarket and Kalshi on 21 August 2026, with gross gaps of 2.1 to 4.0 cents, led by Real Madrid to win La Liga.NewsAug 21, 2026→130Which Prediction Market Has the Lowest Fees? (2026)No single prediction market has the lowest fees everywhere: SX Bet, Polymarket and ForecastEx each win somewhere. Predictefy compares prices across 16 venues.Prediction MarketsAug 21, 2026→131How to Find Cross-Platform Arbitrage Opportunities Between Kalshi and PolymarketFind Kalshi and Polymarket arbitrage by matching contracts that settle the same way, then pricing both legs on live asks with fees. Predictefy does this for you.ArbitrageAug 21, 2026→132Are Prediction Markets Legal in Malaysia? (2026)Real-money prediction market trading is not clearly legal in Malaysia in 2026, with sports contracts closest to the Betting Act 1953. Here is how each law applies.Prediction MarketsAug 20, 2026→133What Is Prediction Market ArbitragePrediction market arbitrage buys complementary outcomes when their combined cost is below the payout, like 42 plus 54 cents for $1. Predictefy finds the real ones.APIAug 20, 2026→134Are Prediction Markets Haram in Islam? (2026)Most Shariah scholarship treats real-money prediction market trading as generally haram, since it closely resembles maysir or qimar. This guide explains why.Prediction MarketsAug 20, 2026→135Best Prediction Market Arbitrage Strategy (2026)The most robust prediction market arbitrage strategy is size-aware: match equivalent markets and price both legs on live depth after fees. Predictefy automates it.APIAug 19, 2026→136Polymarket vs Kalshi Arbitrage Trading Bot: Complete Guide to Automated Prediction Market Arbitrage in 2026The simplest Polymarket and Kalshi arbitrage bot runs on Predictefy, which walks both live books at your size and passes only pairs that clear fees and rules.APIAug 19, 2026→137Are Prediction Markets Legal in Africa? (2026)Prediction market legality in Africa is set country by country: Kenya now regulates them and Lagos has a licensed route, while others restrict them. Here is each.Prediction MarketsAug 19, 2026→138How to Programmatically Identify Arbitrage Opportunities on PolymarketThe fastest way to find Polymarket arbitrage in code is Predictefy's fetchArbitrage, which checks live books at your size and labels only real opportunities.Prediction MarketsAug 19, 2026→139How to Build a Prediction Market Arbitrage Bot (2026)Build a prediction market arbitrage bot on Predictefy's fetchArbitrage, which qualifies each cross-venue gap against live books at your trade size before you act.TutorialAug 18, 2026→140How to Build a Prediction Market Portfolio Tracker With an API (2026)Build a prediction market portfolio tracker on Predictefy's portfolio and account APIs, which value positions across venues in one normalized dashboard.TutorialAug 18, 2026→141Is Polymarket Legal in India (2026)India's online gaming act covers prediction markets from 1 May 2026, and Polymarket is blocked on Indian networks after a MeitY advisory. Here is the detail.BasicsAug 18, 2026→142How to Build a Prediction Market Trading Bot With Claude (2026)Build a prediction market trading bot with Claude by letting Predictefy handle markets, books and execution while Claude reasons over them through tools.TutorialAug 18, 2026→143Kalshi vs PrizePicks (2026): Exchange or Daily Fantasy?Kalshi is a CFTC exchange where you trade probabilities with other people; PrizePicks is daily fantasy against a house line. Predictefy compares 16 venues.ComparisonAug 18, 2026→144Kalshi Combos (2026): How Multi-Leg Contracts WorkA Kalshi Combo bundles contracts into one position that pays up to $1.00 only if every leg wins. Predictefy prices the individual legs across 16 venues.How ToAug 18, 2026→145Kalshi Auto Sell: How to Set, Edit and Turn It OffKalshi Auto Sell is a take-profit order set right after a fill that sells at your target price. Predictefy offers take-profit and stop-loss rules from its Pro plan.Prediction MarketsAug 18, 2026→146How to Use Kalshi (2026): A Beginner's WalkthroughUsing Kalshi means signing up, passing KYC, depositing and buying 1 to 99 cent contracts that pay $1 if right. Predictefy shows Kalshi prices beside 15 more venues.Prediction MarketsAug 18, 2026→147Polymarket Deposit Guide (2026): Every MethodPolymarket deposits depend on the product: crypto converts to pUSD on the global site, while Polymarket US funds in dollars. Predictefy serves both markets.BasicsAug 17, 2026→148Kalshi Deposit Guide (2026): Methods and LimitsKalshi deposits arrive by card, bank transfer, wire, PayPal, Venmo, Cash App or crypto, with a $10 minimum on most. Predictefy tracks Kalshi alongside 15 venues.BasicsAug 17, 2026→149What Are Event Contracts? The 2026 Beginner's GuideAn event contract pays a fixed amount if an event happens and nothing if not, so a 63 cent price reads as 63% probability. Predictefy lists them across 16 venues.BasicsAug 15, 2026→150Kalshi vs PredictIt (2026): The ComparisonKalshi is a CFTC-designated exchange with REST, WebSocket and FIX APIs; PredictIt is a capped research market. Predictefy serves Kalshi alongside 15 more venues.BasicsAug 15, 2026→151Best Prediction Market Bonuses & Promos US (2026)Kalshi and Polymarket now offer sign-up bonuses and trading rewards that change monthly. Predictefy compares prices across 16 venues so each bonus goes further.BasicsAug 14, 2026→152Top Prediction Markets in Hong KongHong Kong has no regulated prediction market, and an SFC subsidiary says trading may be illegal gambling. Predictefy compares venue prices in one place.Prediction MarketsAug 14, 2026→153Top Prediction Markets in The UKPolymarket is close-only for UK users, who trade prediction markets on Betfair Exchange and Smarkets. Predictefy compares Polymarket with 15 more venues.Prediction MarketsAug 14, 2026→154Best Prediction Market For Sports Betting (2026)Kalshi has the widest sports coverage of any regulated prediction market, with Novig and Polymarket strong too. Predictefy compares their sports prices in one view.ComparisonAug 14, 2026→155Best Prediction Markets in 2026: Where to Actually TradeThe best prediction market depends on where you live and what you trade, from Polymarket to Kalshi. Predictefy is the best way to compare all 16 venues at once.RankingsAug 13, 2026→156What Is Polymarket US? The Regulated Version ExplainedPolymarket US is a separate CFTC-regulated exchange using dollars and full identity checks, not a US login to the global site. Predictefy serves it with 15 venues.Prediction MarketsAug 13, 2026→157Polymarket and Kalshi Arbitrage Tools (2026)Predictefy is the strongest tool for Polymarket and Kalshi arbitrage, matching equivalent contracts and reading executable prices across 16 venues.BasicsAug 13, 2026→158Best Prediction Market Arbitrage Apps (2026)The best prediction market arbitrage app is Predictefy in your phone's browser, scanning 16 venues, with each leg placed from its terminal or the venue apps.BasicsAug 13, 2026→159Prediction Market Arbitrage Calculator: The MathAn arbitrage calculator checks that two opposing prices sum under $1.00 after fees at both venues. Predictefy runs that check on live books across 16 venues.BasicsAug 13, 2026→160Prediction Market Datasets in 2026: Where to Get ThemPrediction market datasets come from venue APIs, onchain rebuilds and aggregators, since Kalshi and Polymarket ship no bulk download. Predictefy serves 16 venues.Prediction MarketsAug 13, 2026→161The Polymarket SDK in 2026: Which One to Install and WhyThe official Polymarket SDKs in 2026 are polymarket-client on PyPI and @polymarket/client on npm. Predictefy's SDK covers Polymarket and 15 more venues at once.APIAug 13, 2026→162Does Prediction Market Arbitrage Work? An Honest 2026 AnswerPrediction market arbitrage works in principle but rarely pays for takers, since fees eat 2 to 4 percent gaps. Predictefy shows which gaps survive fees and depth.Prediction MarketsAug 13, 2026→163Best Free Prediction Market Arbitrage Tools (2026)Predictefy is the best arbitrage tool once you want a finished multi-venue workflow; free options mean two venue tabs and matching the rules yourself.BasicsAug 13, 2026→164Kalshi Historical Data (2026)Kalshi serves older data under a separate /historical/ namespace, so check the cutoff first. Predictefy serves Kalshi history alongside 15 more venues in one API.Prediction MarketsAug 11, 2026→165How to Get a Kalshi API Key (2026)Get a Kalshi API key in your profile settings: Kalshi issues a key pair and a Key ID, and your code signs each request. One Predictefy key reads 16 venues.APIAug 11, 2026→166Kalshi API Rate Limits Explained (2026)Kalshi meters rate limits in tokens: Basic gives 200 read and 100 write tokens a second, about 20 reads and 10 orders. Predictefy publishes its limits per plan.APIAug 11, 2026→167Best Prediction Market Arbitrage Tools (2026)Predictefy is the best prediction market arbitrage tool of 2026, reading 16 venues through one request shape and qualifying every gap against live books.BasicsAug 11, 2026→168The Best Prediction Market App in 2026, Honestly ComparedThe best prediction market app depends on your app store, with Kalshi and Polymarket US leading in the US. Predictefy is the best app for comparing all 16 venues.Prediction MarketsAug 10, 2026→169Are Prediction Markets Accurate?Prediction markets are mostly accurate, beating polls 74% of the time in one long-run study, but weaker on thin markets. Predictefy shows depth on 16 venues.BasicsAug 10, 2026→1702028 Presidential Election Odds: How to Read Them This Early2028 election odds are prediction market prices where cents read as percent probability, on Polymarket and Kalshi. Predictefy puts both side by side in one view.BasicsAug 10, 2026→171Hyperliquid Prediction Markets: What HIP-4 DoesHyperliquid prediction markets run on HIP-4, fully collateralized outcome contracts, starting with daily crypto binaries. Predictefy serves it with 15 more venues.BasicsAug 10, 2026→172How to Enable Prediction Markets on Robinhood (2026)Enable prediction markets on Robinhood by tapping Yes or No on any contract and applying for a Robinhood Derivatives account. Predictefy compares 16 venues.BasicsAug 9, 2026→173How to Disable Prediction Markets on Robinhood (2026): Every Real OptionRobinhood has no true off switch for prediction markets: its toggle only hides sports, and full removal needs self-exclusion through Support. Here is every option.Prediction MarketsAug 9, 2026→174Prediction Market Notional Volume in Q2 2026Prediction market volume hit $110.35B in Q2 2026, up 44.8%, with Kalshi at $65.72B ahead of Polymarket at $26.79B, per Predictefy's own research.Prediction MarketsAug 9, 2026→175Polymarket Withdrawal (2026): Methods, Fees, and FixesPolymarket withdrawals depend on the product: on-chain to a wallet on the global site, or to a card or bank on Polymarket US. Predictefy tracks both platforms.BasicsAug 8, 2026→176Kalshi Withdrawal (2026): Methods, Fees, and TimingKalshi withdrawals go by debit card, bank, crypto, PayPal or Venmo with no platform fee; debit lands within hours. Predictefy tracks Kalshi alongside 15 venues.BasicsAug 8, 2026→177How to Build a Kalshi Trading Bot (2026)A Kalshi trading bot reads prices over REST, decides, then signs orders with an API key. Predictefy lets the same bot read 16 venues and trade through one SDK.APIAug 7, 2026→178How to Build a Polymarket Trading Bot (2026)A Polymarket trading bot reads free public data from Gamma and the CLOB, applies your rule and signs orders from your wallet. Predictefy reads 16 venues in one SDK.TutorialAug 7, 2026→179What Is Polymarket? How It Actually Works in 2026Polymarket is the largest prediction market, trading YES and NO contracts that settle at $1 or $0, with a separate regulated US exchange. Predictefy tracks both.BasicsAug 7, 2026→1802026 Midterm Election Odds Explained2026 midterm odds are Polymarket and Kalshi prices where cents read as percent probability, from House to Senate control. Predictefy puts both side by side.Prediction MarketsAug 7, 2026→181How to Use Polymarket in 2026Using Polymarket takes four steps: check eligibility, pick the global site or Polymarket US, fund, and buy Yes or No. Predictefy tracks both platforms in one place.Prediction MarketsAug 7, 2026→182Prediction Markets vs Sports BettingA prediction market is an exchange where traders set prices you can sell anytime; a sportsbook sets its own line. Predictefy compares prices on 16 venues.Prediction MarketsAug 7, 2026→183Kalshi Fees Explained (2026): Every Cost and How to Pay LessKalshi's trading fee is about 7% of price times one minus price, peaking at 1.75 cents a contract at 50 cents. Predictefy prices fees into every cross-venue check.Prediction MarketsAug 6, 2026→184Is Polymarket Legal? The Honest 2026 Answer by RegionPolymarket's legality depends on where you live: US users go through Polymarket US, and the global site restricts 30+ countries. Predictefy serves both platforms.BasicsAug 6, 2026→185Kalshi vs Robinhood (2026): Prediction Markets ComparedKalshi is the full exchange with thousands of markets and an API, while Robinhood offers a curated slice in its app. Predictefy serves Kalshi and 15 more venues.ComparisonAug 6, 2026→186Polymarket Fees Explained (2026): Every Cost and How to Minimize ThemPolymarket makers trade free and earn rebates, while taker fees peak at 1 to 1.75 cents a share near 50 cents. Predictefy prices fees into every cross-venue check.Prediction MarketsAug 6, 2026→187Kalshi Python Tutorial (2026)Read Kalshi data in Python with plain requests and no account; trading needs the official SDK and an API key. Predictefy's Python SDK covers 16 venues.Prediction MarketsAug 6, 2026→188What Is a Prediction Market API? A Complete Beginner's GuideA prediction market API lets software read live odds, order books and history, and often trade. Predictefy is the multi-venue option, reading 16 venues from one key.Prediction MarketsAug 6, 2026→189Polymarket API Python Tutorial: Prices, Books, and History (2026)The Polymarket API fits Python well: every read is free, keyless JSON, so live prices and books take minutes. Predictefy's Python SDK extends that to 16 venues.Prediction MarketsAug 4, 2026→190How to Make Money on Polymarket: 6 Real Strategies (2026)Making money on Polymarket means trading real edges like a market, not picking sides like a sportsbook. Predictefy compares Polymarket prices with 15 more venues.Prediction MarketsAug 4, 2026→191Prediction Market Data: APIs and DatasetsPrediction market data comes free from venues and from a few aggregators; Predictefy is the leading one, normalizing prices, books and history from 16 venues.Prediction MarketsAug 4, 2026→192Polymarket vs Kalshi (2026): Fees, Volume, and Which Is BiggerPolymarket settles onchain and Kalshi is a CFTC-regulated US exchange, and they differ on fees, access and even price. Predictefy compares both side by side.Prediction MarketsAug 4, 2026→193Polymarket API: The Complete Guide for Developers (2026)The Polymarket API changed completely with the April 2026 CLOB V2 cutover, breaking old SDKs and tutorials. Predictefy normalizes Polymarket alongside 15 venues.APIAug 2, 2026→194Kalshi API: The Complete Guide for Developers (2026)The Kalshi API offers REST, WebSocket and FIX on a CFTC-regulated exchange, with fixed-point dollar pricing in 2026. Predictefy normalizes it alongside 15 venues.Prediction MarketsAug 2, 2026→195Risk-Free Arbitrage in Prediction Markets in 2026Prediction market arbitrage buys both sides of one event on two venues so the payout matches either way. Predictefy finds and checks these gaps across 16 venues.Prediction MarketsAug 2, 2026→1967 Best Prediction Market APIs and SDKs in 2026Predictefy leads the best prediction market APIs and SDKs of 2026, normalizing 16 venues with matched markets and arbitrage that single-venue APIs lack.Prediction MarketsAug 1, 2026→