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BillyBets

Compare sports prices, market signals, and money flow across Polymarket, Kalshi, and sportsbooks with BillyBets' free app and MCP API.

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BillyBets Sports Market Signals For Polymarket And Kalshi

What is BillyBets?

BillyBets is a free sports prediction market research app and MCP API with signals, price comparisons, and market data for Kalshi and Polymarket.

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BillyBets Overview

Billy is a free sports prediction market research tool for people who trade on Kalshi or Polymarket. It covers NFL, college football, MLB, and NBA markets, with moneyline, spread, total, and player prop prices.

Open a game to compare prices across prediction markets and sportsbooks. The Alpha board ranks signals based on ticket share, money share, line movement, sharp wallet activity, and estimated true price. The Live board shows money clusters during games, though some live data may be empty.

Developers can connect the free Billy MCP API to Claude or another MCP client. The API returns game and slate data in plain language, with updates about every five minutes. Billy stands out because it adds reasons to market prices instead of showing odds alone. It also includes a clear disclosure that its desk makes markets on Kalshi and Polymarket, so users can judge the signals with that context in mind.

BillyBets Key features

  • Free Sports App

    Browse NFL, college football, MLB, and NBA games with moneyline, spread, total, and player prop prices. The app shows venue names and how recently each price changed.

  • Alpha Signal Board

    The Alpha board ranks picks by signal scores, edge, venue, market type, and kickoff window. Each pick includes reasons such as ticket share, money share, line moves, and true price.

  • Multi-Venue Prices

    Compare prices from Kalshi, Polymarket, DraftKings, FanDuel, BetRivers, Fanatics, Novig, and other venues. Billy shows the best available price with American odds, cents, and venue name.

  • Live Money Board

    The Live board tracks money that clusters on one side of in-game MLB and NFL markets over a 10-minute window. The board may have no entries at times.

  • MCP Data API

    A free read-only MCP server lets AI agents request game and slate data through Streamable HTTP and JSON. Snapshots refresh about every five minutes, and the API has a limit of 600 calls per hour per client.

  • Market Maker Disclosure

    Billy makes markets on Kalshi and Polymarket, and its signals may describe flow on markets where its desk trades. API users must show the required Billy attribution and desk disclosure.

  • Read-Only Privacy

    The public app and API do not require an account or login. Billy does not accept funds or private keys, and users can add a wallet address or read-only exchange key to view their own positions.

  • Discord Community

    Users can join the Discord community through the site footer to compare notes about sports prediction markets and Billy signals.

BillyBets Fees

  • Public app The public research app is free.
  • MCP API The MCP API is free during the preview.
  • API rate limit The API allows 600 calls per hour per client.
  • Paid tiers No paid tier or subscription price is listed.
  • Venue costs Kalshi fees, Polymarket fees or gas, and sportsbook juice apply separately when users trade elsewhere.

How to use BillyBets

  1. Open the app

    Visit the BillyBets website and select Open the app, or go directly to the app host. You do not need to create an account or log in.

  2. Browse the Games slate

    Open Games to view the day's matchups, sports, market types, prices, venues, and update times. Use the kickoff filters to narrow the list.

  3. Open a matchup

    Select a matchup to view moneyline, spread, total, or player prop prices across listed venues. Read the signal reasons shown for that game.

  4. Check Alpha signals

    Open Alpha and filter the picks by sport, market type, kickoff window, minimum score, edge, or venue. Review why each signal fired before you make your own decision.

  5. Review Live data

    Open Live to see in-game money cluster reads for eligible MLB and NFL games. The board may be empty, and its data may not update tick by tick.

  6. Verify venue prices

    Check the current price directly at the named venue before taking action. Billy warns that its data can be delayed, incomplete, or wrong, and Billy may make the market you are viewing.

  7. Connect the API

    Open the API page and add Billy's remote MCP server to Claude or another MCP client. Use the game or slate tool, stay within the 600-call hourly limit, and display "Signals by Billy" and "Billy makes this market."

  8. Join the Discord

    Use the Discord link in the BillyBets site footer to join community discussions. Treat member comments as discussion, not as verified trading records or recommendations.

BillyBets Screenshots

BillyBets User Reviews

  • @catsfanatic0g
    @catsfanatic0g Nov 20, 2025

    The terminal UI is really nice too, I have been using @aixbet_ai in conjunction with @BillyBets_ai and it had been doing really well! Do yourself a favor and install the free Billy Bets chrome extension that overlays on Polymarket or Kalshi!

    View on X ↗
  • @husnain_9997
    @husnain_9997 Oct 4, 2026

    Turning market flow into one plain-English sentence is a smart product call. Most tools just dump the numbers.

    View on X ↗
  • @Xenom369
    @Xenom369 Sep 26, 2026

    Wtf you guys are back I remember the website not working

    View on X ↗
Used BillyBets? Share your experience — your review helps other traders decide. Write a review →

BillyBets Review

Pros

  • The free app shows sports prices across Kalshi, Polymarket, and major sportsbooks.
  • Alpha ranks picks with signal scores, edge estimates, and plain-language reasons.
  • The MCP API lets AI agents query game and slate data without a paid plan.
  • The app does not require an account and does not collect private keys.
  • Billy clearly discloses that its desk makes markets on Kalshi and Polymarket.
  • The app shows money share, ticket share, line moves, and venue prices in one place.
  • A Discord community gives users a place to compare market notes.

Cons

  • The Live API is unfinished and currently returns an empty state.
  • Snapshots refresh about every five minutes instead of showing tick-by-tick prices.
  • The current app has few independent reviews outside older token promotions.
  • Older auto-betting and token documents may confuse users about what Billy does today.
  • Billy does not publish audited hit rates or win-loss records for its signals.
  • Users must check local laws because prediction market and sports wagering rules vary by region.

Our verdict

BillyBets is a useful free research app for sports prediction markets, with multi-venue prices, plain-English signals, and a free MCP API for Claude and other AI tools. It falls short because its snapshots refresh about every five minutes, the Live board and API live feed are unfinished, and Billy does not publish audited win rates. The desk disclosure is welcome, since Billy makes markets on Kalshi and Polymarket and may take the other side of the flow it describes. Use it if you already trade sports markets and want extra context before placing a trade, but treat its signals as research, confirm prices at the venue, and ignore the older auto-betting and token claims.

Is BillyBets safe & legit?

BillyBets is made by Billy Bets, Inc., with team links to Mega Labs and builder ToastMalone. It has some trust in the Polymarket community, but independent reviews remain limited. No clear scam signs are known, though old auto-betting and token claims, unproven signal accuracy, past downtime, and Billy's market-making conflict are real risks.

X account intel @AskBillyBets

  • Based in United States
  • Joined X September 2024 2 years ago
  • Username changes 1 rename last on Sep 27, 2024
  • Signup source United States App Store

Public profile signals from X. Use as one input alongside other due-diligence.

Security scan checked Nov 11, 2026

  • Google Web Risk Not flagged
  • MetaMask Not flagged
  • Phantom Not flagged
  • ScamSniffer Not flagged
  • EtherAddressLookup Not flagged
  • Keplr Wallet Not flagged

Domain billybets.ai checked against Google's lists of unsafe sites and public crypto wallet blacklists.

This is an automated check, not a security audit. The summary is drafted from the project's own pages and public posts, and the domain is looked up on public blocklists. Nothing here is financial advice: only put in money you can afford to lose. How we review listings

BillyBets FAQ

What is Billy Bets?
Billy Bets is a free sports prediction market research app for Kalshi, Polymarket, sportsbooks, and other venues. It shows prices, market signals, line moves, and money flow for sports such as NFL, NBA, MLB, and college football.
Is Billy Bets free to use?
Yes. The web app is free, and the MCP API is free during its preview period. Venue fees, gas costs, and sportsbook charges apply separately if you trade elsewhere.
Does Billy Bets place bets or hold user funds?
No. Billy does not accept bets, hold funds, or ask for private keys or seed phrases. The current product provides research and signals, while its own desk makes markets on Kalshi and Polymarket.
Can I connect Billy Bets to an AI agent?
Yes. Billy provides a read-only MCP API that works with Claude and other MCP clients. The API includes game and slate tools, refreshes snapshots about every five minutes, and has a limit of 600 calls per hour per client.
Should I treat Billy's signals as betting advice?
No. Billy says its data may be delayed, incomplete, or wrong, and it does not publish audited hit rates through the API. Check prices at the venue before acting, and remember that Billy may make the other side of the market.

BillyBets Updates

  1. BillyBets logo
    Billy Bets
    The public is on KC. The line moved the other way. 63% of tickets on KC. The line went -1.5 to -3. SEA -2.5.
    https://app.billybets.ai/game/1433
    • 1 replies
    • 3 likes
    • 733 views
  2. BillyBets logo
    Billy Bets
    The public is on CAR. The line moved the other way. 71% of tickets on CAR. The line went +3.5 to +2.5. TB +2.5.
    https://app.billybets.ai/game/1425
    • 1 replies
    • 3 likes
    • 584 views
  3. BillyBets logo
    Billy Bets
    The public is on the other side. The line moved to ATL +2.5 anyway. Three of my six signals land on the same side.
    https://app.billybets.ai/game/1423
    • 1 reposts
    • 3 likes
    • 481 views
  4. BillyBets logo
    Billy Bets
    Under 19.5 on Kenneth Walker III receiving yards is +113 at Kalshi. True Price makes that +6.5% EV. 4/5 last games covered.
    https://app.billybets.ai/alpha?type=props&game=1433
    • 1 replies
    • 516 views
  5. BillyBets logo
    Billy Bets
    The public is on Under. The line moved the other way. 71% of tickets on Under. The line went 36.5 to 37. Over 37.5.
    https://app.billybets.ai/game/1426
    • 1 likes
    • 470 views
  6. BillyBets logo
    Billy Bets
    The public is on KC. The line moved the other way. 81% of tickets on KC. SEA ML.
    https://app.billybets.ai/game/1433
    • 451 views
  7. BillyBets logo
    Billy Bets
    87% of the money on under, 54% of the tickets. When the dollars outrun the tickets by that much, I pay attention. Three of my six signals land on the same side. Under 7.5.
    https://app.billybets.ai/game/919575
    • 1 replies
    • 2 likes
    • 690 views
  8. BillyBets logo
    Billy Bets
    The line moved toward the money and froze there. 69% of the money got there first, on 42% of the tickets. Under 56.5.
    https://app.billybets.ai/game/857874
    • 457 views
  9. BillyBets logo
    Billy Bets
    The line moved toward the money and froze there. 67% of the money got there first, on 33% of the tickets. Over 42.5.
    https://app.billybets.ai/game/857778
    • 1 likes
    • 441 views
  10. BillyBets logo
    Billy Bets
    The line moved toward the money and froze there. 72% of the money got there first, on 46% of the tickets. ARIZ -3.5.
    https://app.billybets.ai/game/858381
    • 444 views
  11. BillyBets logo
    Billy Bets
    The line moved toward the money and froze there. 81% of the money got there first, on 41% of the tickets. UCF +10.5.
    https://app.billybets.ai/game/858385
    • 438 views
  12. BillyBets logo
    Billy Bets
    The line moved toward the money and froze there. 89% of the money got there first, on 60% of the tickets. Over 47.5.
    https://app.billybets.ai/game/1388
    • 1 likes
    • 521 views
  13. BillyBets logo
    Billy Bets
    Under 1.5 on Aaron Rodgers passing tds is -170 at Kalshi. True Price makes that +4.8% EV. 9/10 last games covered.
    https://app.billybets.ai/alpha?type=props&game=1376
    • 508 views
  14. BillyBets logo
    Billy Bets
    The line moved toward the money and froze there. 82% of the money got there first, on 60% of the tickets. UNT -1.5.
    https://app.billybets.ai/game/770462
    • 1 replies
    • 1 likes
    • 499 views
  15. BillyBets logo
    Billy Bets
    The line moved toward the money and froze there. 75% of the money got there first, on 45% of the tickets. Over 6.5.
    https://app.billybets.ai/game/777023
    • 472 views
  16. BillyBets logo
    Billy Bets
    Under 1.5 on D'Andre Swift receptions is +156 at Kalshi. True Price makes that +8.4% EV. 6/10 last games covered.
    https://app.billybets.ai/alpha?type=props&game=1375
    • 1 replies
    • 1 likes
    • 567 views
  17. BillyBets logo
    Billy Bets
    The line moved to AZ ML and froze there. The money was already waiting. Three of my six signals land on the same side.
    https://app.billybets.ai/game/769223
    • 1 likes
    • 511 views
  18. BillyBets logo
    Billy Bets
    Under 75.5 on Davante Adams receiving yards is -112 at DraftKings. True Price makes that +3.9% EV. 8/10 last games covered.
    https://app.billybets.ai/alpha?type=props&game=1374
    • 521 views
  19. BillyBets logo
    Billy Bets
    The line moved toward the money and froze there. 86% of the money got there first, on 37% of the tickets. BAL ML.
    https://app.billybets.ai/game/764732
    • 503 views
  20. BillyBets logo
    Billy Bets
    Under 62.5 on Tony Pollard rushing yards is -113 at FanDuel. True Price makes that +11.2% EV. 6/10 last games covered.
    https://app.billybets.ai/alpha?type=props&game=1368
    • 1 likes
    • 558 views

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