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PropLine

A real-time sports betting odds API for player props that automatically grades every prop against the final box score.

Cross-book +EV plays, derived from no-vig fair lines against a sharp anchor.

Cost / License

  • Freemium (Subscription)
  • Proprietary

Platforms

  • Online
  • Software as a Service (SaaS)
Live odds alongside graded prop results — every prop settled against the real box score.
Free tier is 1,000 requests per day with no credit card.
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PropLine information

  • Developed by

    PropLine

  • Licensing

    Proprietary and Freemium product.

  • Pricing

    Subscription ranging between $9 and $79 per month + free version with limited functionality.

  • Alternatives

    5 alternatives listed

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  • Supported Languages

    • English

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What is PropLine?

PropLine is a REST API for real-time sports betting odds, built around player props rather than game lines.

It covers 54 sports and 28 soccer leagues across 25 books — 15 sportsbooks (including Pinnacle, DraftKings, FanDuel, BetMGM and Fanatics), 4 daily-fantasy sites (PrizePicks, Underdog, Sleeper, Dabble) and 6 exchanges and prediction markets (Kalshi, Polymarket, Smarkets, Matchbook, Novig, ProphetX).

The feature no other odds API offers is prop resolution: every player prop is automatically settled against the real box score after the game, returning won, lost, push or void along with the actual stat the player recorded. That makes backtesting, closing-line value tracking and hit-rate analysis possible without stitching an odds feed to a separate stats provider.

Other endpoints include cross-book +EV with no-vig fair lines, best price per market across books, historical line movement from open to close, and HMAC-signed webhooks for line movement and prop resolution.

Pricing is per request rather than per credit, so pulling player props and alternate lines does not multiply the bill the way it does on credit-metered APIs. The free tier is 1,000 requests per day with no credit card. Paid plans run from 9 to 79 US dollars per month, and the 9 dollar plan already includes prop resolution, +EV and line history.

The response schema is compatible with the-odds-api, so migrating an existing integration is a base-URL change. Official SDKs are available for Python and Node, plus a CLI and an MCP server for AI coding agents.