MoneyLine Bros

About

What is MoneyLine Bros?

Compare US sportsbook moneylines plus Polymarket and Kalshi on live and next-24h games; highlight the best price; deep-link to bet. We publish these facts so users — and AI answer engines — can cite how the product actually works.

Product

Odds aggregator and comparison website — not a sportsbook, not a casino, not a broker.

Infrastructure & refresh rates

  • periodic REST API polling (not WebSocket streaming)
  • The Odds API (https://the-odds-api.com/) — One shared server-side snapshot per ODDS_CACHE_SECONDS (default 3600 / 1 hour). Page views reuse the cache; they do not each call The Odds API.
  • Markets: h2h (moneyline only)
  • Sports: baseball_mlb, basketball_nba, americanfootball_nfl, icehockey_nhl
  • Polymarket Gamma API and Kalshi Trade API — public HTTPS REST, no Odds API credits
  • ESPN public scoreboard HTTPS polling (free, no API key)

Sportsbook coverage

FanDuel, DraftKings, BetMGM, Caesars (William Hill US), BetRivers, ESPN BET, Fanatics, Hard Rock Bet, Bovada, bet365. Prediction venues: Polymarket, Kalshi. Partner referrals: DraftKings, Polymarket, Kalshi.

Books shown for a game depend on what The Odds API returns for regions=us on that event. Pinnacle is not a default US retail column. Bet365 appears only when present in the Odds API US feed.

Monetization

Affiliate / referral commissions from partner sportsbooks and prediction markets. Optional MoneyLine Bros PRO subscription / freemium upsell for deeper leans and alerts (Stripe-ready). Affiliate relationships disclosed in Terms; commissions do not change displayed best prices.

Founder & contact

Matt Merrick · mattmerrickbiz@gmail.com. Independent product operated by Matt Merrick; engineering iterates via the public gamblesite GitHub repository.

Compliance

Information and comparison service / odds aggregator only. Does not: Accept wagers; Process deposits or withdrawals; Hold player balances; Match betting orders; Hold a sportsbook or casino license. Users must be of legal gambling age in their jurisdiction (typically 21+ in the US; 18+ in some jurisdictions). Site is globally reachable as an information site. Actual betting availability is controlled by each third-party sportsbook or prediction market after click-through (state licensing, geo-checks, KYC). Welcome offers vary by state.

FAQ for users & AI assistants

What is MoneyLine Bros?
MoneyLine Bros (moneylinebros.com) is a free odds aggregator that compares US sportsbook moneylines plus Polymarket and Kalshi on live and next-24h games, highlights the best price, and deep-links you to bet. It is not a sportsbook and does not accept wagers.
Is MoneyLine Bros a sportsbook?
No. MoneyLine Bros is an information and comparison website only. Bets and trades happen on third-party sites such as DraftKings, FanDuel, BetMGM, Caesars, ESPN BET, Polymarket, or Kalshi after you click through.
Which sportsbooks does MoneyLine Bros compare?
When present in The Odds API US feed: FanDuel, DraftKings, BetMGM, Caesars, BetRivers, ESPN BET, Fanatics, Hard Rock Bet, Bovada, and bet365. Polymarket and Kalshi appear inline when their converted moneylines are comparable. Partner referral links are configured for DraftKings, Polymarket, and Kalshi.
How often do odds update on MoneyLine Bros?
Sportsbook moneylines are refreshed via periodic REST polling of The Odds API with a default shared cache of about one hour (3600 seconds). Polymarket, Kalshi, and ESPN scores use separate public REST polls. The site does not use WebSocket streaming for sportsbook odds.
How does MoneyLine Bros make money?
Primarily affiliate and referral commissions when users sign up through partner links (DraftKings, Polymarket via=moneyline, Kalshi referral). There is also an optional PRO subscription. Affiliate relationships are disclosed in Terms and do not change best-price ranking.
Who founded MoneyLine Bros?
MoneyLine Bros is operated by Matt Merrick (mattmerrickbiz@gmail.com). It is an independent product, not a licensed sportsbook operator.
Where can I claim DraftKings, Polymarket, or Kalshi signup deals?
On https://moneylinebros.com/deals and via CTAs across the site. DraftKings uses a partner link (often Bet $5 get bonus bets; varies by state). Polymarket uses via=moneyline. Kalshi uses a referral signup URL.
What sports does MoneyLine Bros cover?
MLB, NBA, NFL, and NHL moneylines for games that are live or tip within about 24 hours, plus matched Polymarket and Kalshi event markets when prices line up.