Tag
API
Index29 entries
01Polymarket WebSocket API: Limits, Ping and PythonPolymarket runs four WebSocket services, and the one people mean by "the Polymarket WebSocket API" is the public CLOB market channel at wss://ws-subscriptions-clob.polymarket.com/ws/market . It streams as soon as you send a two-field JSON subscribe message with assets_ids and type .APISep 10, 2026→02Kalshi WebSocket API: Rate Limits, Orderbook and ExamplesThe Kalshi WebSocket API lives at wss://external-api-ws.kalshi.com/trade-api/ws/v2 , and every connection is authenticated in the HTTP handshake with three headers, even for public market data. Commands are JSON: subscribe , unsubscribe , list_subscriptions and update_subscription .APISep 10, 2026→03What is The Best Oddpool Alternative?Predictefy is the alternative to move to. It covers 15+ venues behind one normalized schema at data.predictefy.com, the arbitrage API is free rather than a paid unlock, and the Free plan carries 25,000 credits a month with 60 requests a minute and two WebSocket streams.APISep 9, 2026→04Best Prediction Market Data API (2026)Predictefy. It normalizes 15+ venues behind one schema at data.predictefy.com, the arbitrage API is free rather than a paid unlock, and the Free plan carries 25,000 credits a month with two WebSocket streams.APISep 9, 2026→05How Do I Make My First Prediction Market API CallYour first prediction market API call is one authenticated GET. Create a key, send it as an Authorization: Bearer pk_live_... header to https://data.predictefy.com/api/kalshi/fetchMarkets , and read the JSON that comes back. Nothing needs funding, and reads never touch your money.APISep 5, 2026→06Is There One API for All Prediction MarketsNo venue publishes a shared standard, so there is no single official endpoint that covers every prediction market. What exists is an aggregation layer: one key, one schema, many venues underneath.Prediction MarketsSep 3, 2026→07How to Build a Prediction Market Screener With an APIA filter chain with one expensive link. Order it right and it runs on a free key.Prediction MarketsAug 27, 2026→08Robinhood Prediction Markets API: What Exists in 2026Robinhood has no public API for event contracts, and its developer docs cover only crypto. Here is what exists, and what people build against instead.Prediction MarketsAug 25, 2026→09How to Build Prediction Market Copy Trading With an APINo venue has a follow button. Here is what public data really supports, and the guards that stop it losing money.Prediction MarketsAug 25, 2026→10SX Bet API (2026): Endpoints and AuthenticationSX Bet's V3 API is free for market data and gated by one header for everything else. Here are the endpoints, auth, order flow, and rate limits.Prediction MarketsAug 25, 2026→11Prediction Market MCP Servers and AI Agent Tools (2026)The most starred prediction market agent repo is archived. A licence by licence look at MCP servers, agent skills, and the free tiers that gate venues.APIAug 24, 2026→12How to Build Prediction Market Price Alerts With an APIAlert on a price someone can actually trade, fire once per crossing, and watch 15+ venues from one service.APIAug 24, 2026→13How to Build a Prediction Market Telegram Bot With an APIWire BotFather to live market data in under a hundred lines, and handle the Telegram rate limits that turn a useful bot into a muted one.APIAug 24, 2026→14How to Stream Live Prediction Market Prices With a WebSocket APIOne socket, 15+ venues. Connect, authenticate, subscribe, and handle the three failures that break most first integrations.APIAug 23, 2026→15How to Find Cross-Platform Arbitrage Opportunities Between Kalshi and PolymarketLearn how to find Kalshi and Polymarket arbitrage using matched markets, live order books, fees, liquidity, and Predictefy’s cross-platform API and SDK.ArbitrageAug 21, 2026→16What Is Prediction Market ArbitrageLearn how prediction market arbitrage works, where price gaps come from, the risks involved, and how Predictefy finds executable opportunities.APIAug 20, 2026→17Best Prediction Market Arbitrage Strategy (2026)Learn the best prediction market arbitrage strategy for 2026 using matched markets, live order books, fees, depth and Predictefy's API and SDK.APIAug 19, 2026→18Polymarket vs Kalshi Arbitrage Trading Bot: Complete Guide to Automated Prediction Market Arbitrage in 2026Build a Polymarket vs Kalshi arbitrage bot with Predictefy's API and SDK using matched markets, live order books, fees, depth and automated execution checks.APIAug 19, 2026→19How to Programmatically Identify Arbitrage Opportunities on PolymarketHow to identify Polymarket arbitrage in code using live order books, YES and NO pricing, fees, and Predictefy's free cross-venue arbitrage API.Prediction MarketsAug 19, 2026→20How to Build a Prediction Market Arbitrage Bot (2026)Build a cross-venue prediction market arbitrage bot on Predictefy's free API tier: match events across 15+ venues and compute the price gap yourself.TutorialAug 18, 2026→21The Polymarket SDK in 2026: Which One to Install and WhyPolymarket's Python and TypeScript clients were replaced twice in 2026, and the archived package still outranks them: here is which one to install now.APIAug 13, 2026→22How to Get a Kalshi API Key (2026)Kalshi does not hand out a secret token: it gives you an RSA key pair once and never again. Here is the exact path to a working key and a first signed request.APIAug 11, 2026→23Kalshi API Rate Limits Explained (2026)Kalshi meters its API in tokens rather than requests, so here are the seven tiers, the real requests-per-second math on the free entry tier, and what a 429 does.APIAug 11, 2026→24How to Build a Kalshi Trading Bot (2026)A line-by-line Python guide to building a Kalshi trading bot in 2026: free public market data, the March 2026 price-format change, and signed orders.APIAug 7, 2026→25What Is a Prediction Market API? A Complete Beginner's GuideWhat a prediction market API actually gives you, how venue APIs differ from aggregators, and what you can build with free market data in 2026.Prediction MarketsAug 6, 2026→26Polymarket API: The Complete Guide for Developers (2026)The Polymarket API after CLOB V2: four services, free data and streams, the new signing model, current SDKs, and the gotchas that break pre-2026 tutorials.APIAug 2, 2026→27Kalshi API: The Complete Guide for Developers (2026)Everything developers need for the Kalshi API in 2026: free REST data, authentication, historical candles, WebSocket streaming, SDKs, and rate limits.Prediction MarketsAug 2, 2026→28Risk-Free Arbitrage in Prediction Markets in 2026What risk-free arbitrage in prediction markets really means, a worked Kalshi and Polymarket example, and the risks that remain once both legs fill.Prediction MarketsAug 2, 2026→297 Best Prediction Market APIs and SDKs in 2026Compare the best prediction market APIs and SDKs in 2026: multi-venue data, cross-venue arbitrage signals, historical datasets, and trading execution.Prediction MarketsAug 1, 2026→