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Changelog

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v2.0.0 - API Revamp

Released: January 6, 2026

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Breaking Changes

  • New API URL: The API has moved to https://api-v2.polyrouter.io
  • Please update your integrations to use the new base URL

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What’s New

We’ve completely revamped the API infrastructure for better reliability and performance. This release includes improved data aggregation across all supported platforms and various bug fixes.

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v0.4.0 - Increased Markets Limit

Released: December 9, 2025

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Improvements

  • Higher Request Limits: Increased the maximum number of markets that can be fetched in a single request from 100 to 250
  • Parallel Fetching for Limitless: Implemented parallel fetching of up to 10 pages (25/page) for improved throughput

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Updated Endpoints

  • GET /markets: Max limit increased from 25 to 250

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Breaking Changes

  • None - All changes are backward compatible
  • Requests with higher limits will now return more data

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v0.3.0 - Profiles, Trades & Platform Improvements

Released: November 5, 2025

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New Features

  • Profile Endpoints: Access user profile information and trading metrics
    • GET /profile/info: Retrieve user profile data from Kalshi and Polymarket
    • GET /profile/trades: Get user trade history with pagination support
  • Historical Trades Endpoint: Added GET /trades to fetch historical trade data for Kalshi and Polymarket markets
  • Changelog Page: Added a changelog page to track all API updates

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Improvements

  • Pagination Fixed: Standardized pagination across all endpoints with consistent cursor-based navigation
  • Kalshi Market Filtering: Automatically filter out MVE markets from Kalshi results
  • Volume & Liquidity Data: Restored volume and liquidity information for Kalshi markets
  • Request Limits: Updated maximum limit to 25 items per request for markets, series, and events endpoints for better performance

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Updated Endpoints

  • GET /markets: Max limit set to 25, improved Kalshi data quality
  • GET /events: Max limit set to 25, consistent pagination
  • GET /series: Max limit set to 25, consistent pagination
  • GET /trades: New endpoint for historical trade data (Kalshi & Polymarket)

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Breaking Changes

  • Maximum limit reduced from 100 to 25 for /markets, /events, and /series endpoints
  • Requests exceeding limit=25 will be capped at 25. This is a momentary change to make performance consistent.

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v0.2.0 - Multi-League Sports Support

Released: October 28, 2025

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New Features

  • Multi-League Games Support: Extended sports endpoints to support NBA, NHL, and MLB in addition to NFL
  • Enhanced Game ID Format: New format {AwayTeam}v{HomeTeam}{YYYYMMDD}@{LEAGUE} (e.g., PHIvWAS20251028@NBA)
  • Kalshi Spreads & Totals: Added support for moneyline, spread, and total markets on Kalshi platform
  • Cross-League Game Discovery: List games across all 4 major US professional sports leagues

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Updated Endpoints

  • GET /league-info: NBA, NHL, and MLB now show operational status with games support
  • GET /list-games: Added support for ?league=nba|nhl|mlb parameters
  • GET /games/{game_id}: Now accepts game IDs with league suffix and supports all 4 leagues

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Breaking Changes

  • None - All changes are backward compatible
  • Old game IDs without league suffix continue to work

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v0.1.0 - Beta Launch

Released: October 21, 2025

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Initial Release

  • Core API: Basic prediction market data aggregation across multiple platforms
  • Sports Betting: NFL games support with moneyline markets
  • Platform Support: Polymarket, Kalshi, ProphetX, Novig, and SX.bet integration
  • Real-time Data: Live market prices and trading data
  • Authentication: API key-based access control

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Available Endpoints

  • GET /platforms: Platform information and health status
  • GET /league-info: NFL league and team information
  • GET /list-games: Available NFL games directory
  • GET /games/{game_id}: NFL game markets and odds
  • GET /list-awards: Available sports awards
  • GET /awards/{award_id}: Award odds and markets
  • GET /list-futures: Available futures markets
  • GET /futures/{future_id}: Futures odds and markets
  • GET /events: Real-time events across platforms
  • GET /markets: Real-time markets across platforms
  • GET /series: Real-time series across platforms
  • GET /price-history: Historical price data