BetOnline Odds API: Get BetOnline Lines Into Your App

No. We found no BetOnline API documentation, and the book offers no public API, developer portal or API key you can request. Its lines reach developers through a BetOnline odds API run by a third party, which collects BetOnline's prices and lines them up with other books in one format. Read our sportsbook API guide for the way those feeds work.

BetOnline does run an affiliate program. Nothing we read describes an odds feed for affiliates, though, and we could not read an official page for the program at all. We also found no deal that licenses BetOnline's odds to a media company. Its terms cover sign-up, termination, liability and restricted countries, and they describe no data program of any kind.

1. An odds API that carries BetOnline

This is the route we recommend, and for BetOnline it is the only one that works. Getting BetOnline's prices is the aggregator's job, and you receive them with other books in one schema, by REST or by a push feed. You sign up, take a key and ask for BetOnline as the bookmaker, and the same call can return the regulated books beside it. Our getting started guide walks through a first request.

2. A licensed feed

None exists: we found no feed for sale and no contract that licenses BetOnline's odds to media partners or developers. If you need BetOnline prices, route one is where they come from.

3. Scraping

BetOnline is hard to scrape, and we would not try. The site blocked every automated request we sent, plain scripts and browser-like requests alike. A scraper that the site turns away returns nothing, and you pay for its upkeep anyway.

The terms do not settle the question on their own. The archived BetOnline terms from June 2025 say nothing on bots or scrapers, and the site refused to show us the current version. A missing clause is not permission: copying a book's prices into a commercial product may still raise legal issues. Buy the feed.

Since route one is the only working route for BetOnline, the table below lists each odds API in our directory that carries it, with a source and a date per claim.

Some rows rest on our probe and some on provider docs. Verified rows list the leagues and market families where the probe found BetOnline prices, and a docs row means BetOnline appears in that provider's book list and nothing more. The verified rows cover moneylines, spreads and totals for the NFL, NBA, MLB and NHL, and they add college football, the WNBA, UFC, tennis and the main European soccer leagues.

Player props appear in the verified rows, with period markets such as halves and quarters next to them. One review of the book lists player, team and game props, futures and parlays across sports, plus a same-game parlay feature. We could not check that list on BetOnline's own site, so confirm the markets in a provider's free tier or trial before you build on them. Prop data has its own structure in each feed, which our player props API guide explains.

Live odds are part of the product too. The same review lists live betting on all major sports and cash out on select markets, and Michigan's regulator listed live events, horse racing and esports among the products on BetOnline.ag. We take the live column in the table from each provider's docs. Our live sports odds API guide covers in-play delivery.

BetOnline is an offshore book. It takes US customers but holds no US state licence, and its terms name Blue High House S.A., licensed by Panama's Gaming Control Board, as the operator. The brand went by BetOnline.com in 2011 and trades as BetOnline.ag today.

The claim that sets BetOnline apart is early lines. One review says BetOnline posts NFL, NBA and college football lines hours before other US-facing books, and often deals reduced juice of -105 on featured games. BetOnline does not say so on any page we could read, so treat it as a claim to test.

An odds feed lets you test it. Store BetOnline's first price on each game with a timestamp, then record when DraftKings and FanDuel post theirs. If BetOnline opens first, you see the market's starting point before the regulated books show a number, and you can measure how far their openers land from it. Pair it with Bovada and you can check one offshore opener against another.

Opening line alerts. Capture BetOnline's first price on each game and alert a user or a model when it posts. Match the feed to the job: a slow poll can miss an opener's first moves, so check how often your plan refreshes.

Offshore against regulated. Show BetOnline beside the regulated books and track the gap by sport and by market. To get BetOnline and the regulated books from one plan, check the Coverage Map for BetOnline.

Pricing against a sharp book. Use Pinnacle as the yardstick and measure how far BetOnline's prices sit from it. The gap shows you where its margins are thin and where they are wide, which is how you check the reduced-juice claim with numbers.

Line history. Store the opener and the close for each market and you get the full path of a game, from BetOnline's first number to the final price. For how far back each feed's history runs, see our historical odds guide.

Using BetOnline's odds as market data is one thing. Sending US users to bet there is another, and we would not build that. Check two things before you launch.

First, read your provider's terms on display. Look for redistribution rights, because some plans stop at internal use and a public app needs more. Second, know the legal picture. On April 28, 2025, the Michigan Gaming Control Board ordered the Panama-based operators of BetOnline.ag and SportsBetting.ag to stop operating in Michigan, and the Massachusetts Attorney General sent both cease-and-desist letters in June 2025. BetOnline's archived terms list restricted countries and name no US state, and we could not confirm whether it now blocks either state. Show its lines as market data, with no sign-up links. This is not legal advice.