Sports Odds API for Betting Apps

To build a sports betting app you want one API that returns live odds, scores, and bet settlement together, rather than three providers stitched into a single feed. SportsGameOdds was built for exactly that. You get real-time lines across 85+ sportsbooks, final scores, per-bet grading, and click-to-bet deeplinks in a single /events response. That one feed powers odds comparison, picks, and bet tracking, so you ship features instead of plumbing integrations.

Why build your sports betting app on SportsGameOdds

• One feed for the whole app lifecycle. Each event's odds carry per-book prices under byBookmaker, and each odd carries a score result and started/ended flags. The same call that powers your odds screen also grades the bet after the final whistle.
• 85+ bookmakers in every response. Pinnacle, Circa, DraftKings, FanDuel, BetMGM, Bet365, and Caesars, plus prediction markets (Kalshi, Polymarket) and DFS (PrizePicks, Underdog), each with fairOdds (no-vig consensus) and bookOdds calculated for you.
• Click-to-bet deeplinks built in. Every supported book includes a deeplink straight to its bet slip, so "Bet now" in your app hands users off to the sportsbook in one tap.
• Five official SDKs plus an MCP server. JavaScript/TypeScript, Python, Ruby, Go, and Java, plus an MCP server for AI-assisted development in Claude Code, Cursor, and VS Code.
• A free Amateur tier to prototype. 2,500 objects/month with no credit card, so you can wire up your MVP before you ever pay.
• Per-event-object pricing that scales predictably. One event is one object no matter how many books or markets you pull, so adding a comparison view or a new prop type doesn't multiply your bill.

What you can build

The same feed maps to the four features almost every betting app ships. Here is how each one leans on concrete fields rather than a separate vendor.

Odds comparison & line shopping

Your users want to see who has the best number. Each oddID (format statID-statEntityID-periodID-betTypeID-sideID) carries a byBookmaker object keyed by bookmaker, where every book reports its own odds, spread, or overUnder and an available flag. Render those side by side to surface the best price, and use fairOdds as a no-vig benchmark to flag value. There is no second "best line" endpoint to call; it is already in the payload.

Picks & recommendations

A picks or model-driven app needs a clean probability signal, not just the price a book is showing. fairOdds gives you the vig-removed consensus to derive implied probability, while bookOdds keeps the juice-inclusive market number for display. Compare a book's price against the fair line to rank edges, then attach the oddID so the pick deep-links to the exact market a user can act on.

Bet tracking & auto-grading

This is the feature most providers force you to bolt a second API onto. When an event finishes, each odd exposes started/ended and a score result value. Compare score to the bet's line (e.g. closeOverUnder for a total) to grade Over, Under, or Push automatically. Store the eventID and oddID when a user logs a bet, then re-fetch finalized events and settle every open ticket from the same feed. You run no reconciliation job against a separate results vendor.

In-app deep-linking to sportsbooks

Turn engagement into clicks. Supported books under byBookmaker include a deeplink (Event.odds.<oddID>.byBookmaker.<bookmakerID>.deeplink) that opens that market on the sportsbook, and every event also exposes book-level links in links.bookmakers. Alt lines carry their own deeplink when it differs from the main line, so "Bet $5 on the over" routes the user to exactly that market.

Example request

Fetch a single event with its odds and result in one call:

curl "https://api.sportsgameodds.com/v2/events?leagueID=NFL&oddsAvailable=true" \
  -H "x-api-key: YOUR_API_KEY"

A trimmed event from the response shows odds, per-book prices, a deeplink, and the score you grade against, all in one object:

{
  "eventID": "abc123",
  "teams": {
    "home": { "names": { "long": "Kansas City Chiefs" } },
    "away": { "names": { "long": "Buffalo Bills" } }
  },
  "odds": {
    "points-all-game-ou-over": {
      "oddID": "points-all-game-ou-over",
      "fairOdds": "-108",
      "bookOdds": "-110",
      "started": true,
      "ended": true,
      "score": 51,
      "byBookmaker": {
        "draftkings": {
          "odds": "-110",
          "overUnder": "48.5",
          "available": true,
          "deeplink": "https://sportsbook.draftkings.com/..."
        },
        "fanduel": { "odds": "-108", "overUnder": "48.5", "available": true }
      }
    }
  }
}

Here the total closed at 48.5 and score came back 51, so the Over settles as a win. Comparison, deeplink, and grading all come from a single payload. See the docs and the live odds tracker example for the full polling loop in JavaScript.

SportsGameOdds vs stitching multiple providers

Frequently asked questions

What API should I use to build a sports betting app?

Does the API include scores and bet settlement?

Which sportsbooks are covered?

Is there a free tier to build with?

What languages and SDKs are supported?

Can I get real-time updates for a live betting app?

Related use cases

• Odds Comparison & Line Shopping API: surface the best price across every book
• Odds API for Arbitrage Betting: detect arbitrage opportunities across books
• DFS Data API: PrizePicks and Underdog lines alongside sportsbook odds
• Live & In-Play Odds API: add live, in-game betting to your app
• NFL odds & data: coverage, markets, and code examples for the NFL
• Pricing: object-based plans from a free Amateur tier up

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