Live Odds API Guide

The Betting Odds API Built for Developers

Real-time odds from 43 sportsbooks. Built-in +EV detection, arbitrage alerts, and SSE streaming. From $0/month with no credit card required.

By theFounder·SharpAPI

Verdict

SharpAPI is the most complete sports betting data platform for developers in 2026.

✓ Real-time odds from 43 sportsbooks in a single endpoint
✓ Built-in +EV detection — no Pinnacle math required
✓ SSE streaming with sub-89ms P50 latency from $79/mo
✓ Free tier: 12 req/min, no credit card, first call in under 5 minutes
✓ TypeScript + Python SDKs with full IntelliSense

The best betting odds API for developers in 2026 is SharpAPI. It delivers live odds from 43 sportsbooks across every betting market, via a single REST endpoint or SSE stream.

Most competitors only return raw lines. SharpAPI adds built-in +EV detection, arbitrage alerts, and no-vig fair odds — computed against Pinnacle's sharp market. That turns an odds feed into a signal feed.

Free tier: 12 requests per minute, no credit card. Paid plans start at $79/month. A full TypeScript SDK ships with the API. Building an odds comparison app, +EV tool, or arbitrage scanner? This is the most complete option available.

What Is a Betting Odds API?

A betting odds API delivers structured odds data from sportsbooks to your application. You make one HTTP request and get back JSON with odds from every major book. Covers live and upcoming games, updated in real time.

Developers use these feeds to power comparison sites, +EV tools, arbitrage scanners, line movement trackers, and betting dashboards. The API you pick decides three things: latency, sportsbook coverage, and what analytics ship out of the box.

How It Works

1.Your app sends a request to the endpoint

2.The API returns structured JSON with odds from 43 sportsbooks

3.Data includes American/decimal odds, +EV flags, fair odds, and more

4.Use SSE streaming for instant updates or REST for on-demand queries

What Is a Sportsbook API?

A sportsbook API gives your application programmatic access to real-time odds, lines, and betting markets from sportsbooks. You send one HTTP request and receive structured JSON with prices from 43 sportsbooks — no scraping, no per-book integrations, no brittle HTML parsers.

SharpAPI is a sportsbook API built for developers and betting operators: a single REST endpoint or SSE stream aggregates DraftKings, FanDuel, BetMGM, Caesars, Pinnacle, and 38 more books, then layers built-in +EV detection and no-vig fair odds on top of the raw feed.

Sportsbook API vs. Scraping

✓ One endpoint instead of 43 separate scrapers
✓ Structured JSON, normalized across every book
✓ Real-time updates via SSE — no polling overhead
✓ +EV flags and fair odds computed for you
✓ Free tier: 12 req/min, no credit card required

What to Look for in a Live Odds API

Real-Time Latency

Odds move in seconds. An API that updates every 30 seconds is useless for +EV or arbitrage. Look for sub-second delivery via SSE streaming, not just REST polling.

Sportsbook Coverage

More sportsbooks means more comparison data and more edge detection. At minimum, you need DraftKings, FanDuel, BetMGM, Caesars, and a sharp book like Pinnacle.

+EV & Arbitrage

Raw odds alone aren't enough for serious tools. Built-in +EV detection and arbitrage alerts save weeks of engineering and keep you from reinventing the math.

SDK & Documentation

A TypeScript/Python SDK with full IntelliSense saves hours per integration. Clear docs with runnable examples mean you ship faster and debug less.

Transparent Pricing

Enterprise-only pricing with no public page is a red flag. Look for a free tier to test with, clear rate limits per plan, and no long-term contracts.

Streaming Support

SSE streaming pushes odds to your app the instant they change. REST polling wastes requests when odds are static and misses fast-moving lines.

What SharpAPI Offers

Real-Time Data

Live and upcoming events from 43 sportsbooks, updated in real-time. Sub-second delivery via SSE streaming or on-demand via REST. Covers moneylines, spreads, totals, props, and futures.

+EV Detection

Every odds line is compared against Pinnacle's no-vig fair odds. The API returns ev_percent, fair_odds, and is_ev_positive with every response.

Developer Experience

TypeScript SDK with full IntelliSense, comprehensive docs, runnable examples, and a free tier to build with. First API call in under 5 minutes, no sales calls.

Supported Market Types

Market Type	Description	Example
Moneylines	Straight win/loss bets on the game outcome	Lakers ML -110
Spreads	Point spread / handicap betting lines	Lakers -3.5 (-110)
Totals	Over/under on combined game score	Over 215.5 (-110)
Player Props	Individual player stat bets	LeBron O25.5 pts (-115)
Game Props	Team and game-level prop bets	1st Half Over 108.5
Futures	Season-long and tournament winner bets	NBA Champion: Celtics +350

All market types include +EV detection, fair odds, and SSE streaming on paid plans.

Odds Provider Comparison

Feature	SharpAPI	The Odds API	OddsBlaze	Sportradar
Starting Price	$0/mo (free tier)	$0/mo (500 req)	$99/mo	$10,000+/mo
SSE Streaming	Built-in (Hobby+)	Not available	WebSocket (paid)	Push feeds (enterprise)
+EV Detection	Built-in	Not available	Not available	Not available
Arbitrage Alerts	Built-in (Pro+)	Not available	Not available	Not available
TypeScript SDK	Full IntelliSense	Community only	REST only	REST only
Sportsbooks	43	15+	30+	50+
No-Vig Fair Odds	Included	Not available	Not available	Not available
Contract Required	No	No	No	Yes

Start in Under 5 Minutes

REST: Fetch Odds

import { SharpAPI } from '@sharpapi/client';

const sharp = new SharpAPI({
  apiKey: 'sk_live_your_key'
});

// Get NBA odds from all sportsbooks
const odds = await sharp.odds.list({
  league: 'NBA'
});

odds.data.forEach(event => {
  console.log(event.name);
  event.odds.forEach(line => {
    console.log(line.sportsbook);
    console.log(line.odds_american);
    console.log(`EV: ${line.ev_percent}%`);
  });
});

SSE: Stream Live Updates

// Real-time odds via SSE streaming
const url = 'https://api.sharpapi.io'
  + '/api/v1/stream'
  + '?channel=odds&league=NBA'
  + '&api_key=sk_live_your_key';

const es = new EventSource(url);

es.addEventListener('odds:update', (e) => {
  const data = JSON.parse(e.data);
  console.log(data.event);
  console.log(data.sportsbook);
  console.log(data.odds_american);
  // Updates push instantly —
  // no polling needed
});

Full TypeScript SDK with IntelliSense. npm install @sharpapi/client

What Developers Build with Live Odds Data

Odds Comparison Apps

Compare odds across 43 sportsbooks in real-time. Show users the best available line for every game and market. SharpAPI's multi-book data makes this a single API call.

+EV Betting Tools

Build tools that surface positive expected value opportunities. SharpAPI's built-in ev_percent field means you can filter and rank +EV bets without any math on your side.

Arbitrage Scanners

Detect guaranteed-profit arbitrage opportunities across sportsbooks. SharpAPI's Pro+ plans include built-in arbitrage detection so you don't have to implement cross-book comparison logic.

Line Movement Trackers

Track how odds change over time to spot sharp action and market sentiment shifts. SSE streaming captures every line movement the instant it happens, with zero polling overhead.

Frequently Asked Questions

What is a sportsbook API?

A sportsbook API is a programmatic interface that delivers real-time odds, lines, and betting markets from sportsbooks as structured JSON. Instead of scraping sportsbook sites, you call one HTTP endpoint and get odds from 43 sportsbooks — DraftKings, FanDuel, BetMGM, Caesars, Pinnacle, and more — updated in real time over REST or SSE streaming. SharpAPI layers built-in +EV detection and no-vig fair odds on top of the raw feed.

What is a betting odds API?

A betting odds API is a programmatic interface that delivers real-time sportsbook odds data to your application. Instead of scraping sportsbook websites, you make HTTP requests to an API endpoint. You get structured JSON back — odds from multiple sportsbooks, updated in real-time. Developers use these to build comparison tools, +EV calculators, arbitrage scanners, and betting dashboards.

Which live odds API has the best free tier?

SharpAPI offers the best free tier for betting odds: 12 requests per minute, 7 sportsbooks, no credit card required. The Odds API offers a free tier limited to 500 requests/month. OddsBlaze and Sportradar have no free tier at all.

What is the difference between REST polling and SSE streaming for odds?

REST polling means your app sends a request every few seconds to check for updates. This wastes API calls when odds haven't changed and adds latency. SSE streaming keeps a persistent connection open. It pushes updates to your app instantly when odds change. SSE reduces latency from seconds to milliseconds and eliminates wasted requests.

Do I need +EV detection in my live odds feed?

If you're building a tool for sharp or advantage bettors, yes. +EV detection compares sportsbook odds against sharp reference lines (like Pinnacle) to identify mispriced odds. Without built-in +EV, you need to source sharp lines separately and implement the math yourself. SharpAPI is the only major provider with native +EV detection included.

How many sportsbooks does SharpAPI cover?

SharpAPI covers 43 sportsbooks including DraftKings, FanDuel, BetMGM, Caesars, PointsBet, Bet365, Pinnacle, BetRivers, Betway, Hard Rock, and more. Coverage focuses on US-facing sportsbooks plus key sharp books like Pinnacle for EV benchmarking. New sportsbooks are added regularly.