The Intelligence Layer for Prediction Market Trading

Automated Value Betting & Arbitrage

Prediction Market Arbitrage Bot

The automated arbitrage bot for Kalshi, Polymarket, Polymarket US, Predict.fun, SX Bet, Sportmarket, Stake.com, BC.Game, Bet105, Pinnacle, and any sportsbook. Find and execute sure bets, pre-match value bets, and live in-play value bets in ~20ms, before the books catch up.

7-day free trial for new members. Windows, macOS & Linux.

claw-arbs: arena
Claw ArbsSSEEdgesLogPortfolioRiskSettingsAgents8 agentsPnL: $0.00KKalshi0.662.4%PPolymarket0.34365Bet3651.91CBCloudbet2.09BFBetfair1.81SMNBMLOTTLHHBTPAActivityWS connected: 4 venues onlineScan #147: 12 pairs monitoredPrice shift: K 0.64 / P 0.36EDGE: Arsenal v Chelsea 2.4%Cross-Venue EdgesArsenal v Chelsea2.4% edge K vs PLeg A: Kalshi YES @ 0.64Leg B: Poly NO @ 0.36

12 venues pre-installed

Kalshi, Polymarket, Polymarket US, Predict.fun, SX Bet, Sportmarket, Stake.com, BC.Game, Cloudbet, Bet105, Pinnacle (PS3838), and BetInAsia, arbitrage-ready out of the box

Add any sportsbook

Community-shared configs catch odds changes in ~20ms on any bookmaker via DOM observation

Automated execution

Detects arbitrage opportunities and value bets, then places orders automatically

Your trading playground

A sandbox for sports traders

Connect any sportsbook. Define any strategy. Automate any bet type: arbitrage, value, hedging, whatever you can think of. Create independent Strategy Agents, each with its own sport, edge thresholds, execution logic, and risk limits. Connect bookmakers through API or point-and-click calibration. Share and trade calibrations with other members on the Community Hub and go live on new sportsbooks in minutes.

any sportany bookmakerany bet typeany strategyyour rules
claw-arbs: configurationEach agent has 30+ independent overrides
SA
Agent: Soccer ALL
Identity
Enabled
Strategy typecross_all
Color#34d399
Edge Thresholds
Min edge1.5%
Max edge8.0%
Max bet / event50.00$
Filters
Sports
soccer
Markets
moneyline1x2btts
Leagues
EPLLa LigaUCLBundesliga
Event modeall
Execution
Order typefak
Depth-aware sizing
Goal cooldown
Cooldown duration45s
First leg venuekalshi
REST verify
365
Venue: Bet365
Enabled
ConnectionHeadless browser
Feed latency~20ms
Calibration
Configcommunity/bet365-ml
Auto-reconnect
Bet Types
Active
moneylinehandicaptotal1x2
Per-Venue Limits
Min bet10.00$
Max bet250.00$
Arbitrage & Value betting features

Built for serious arb and value bettors

12 venues pre-installed

Kalshi, Polymarket, Polymarket US, Predict.fun, SX Bet, Sportmarket, Stake.com, BC.Game, Cloudbet, Bet105, Pinnacle (PS3838), and BetInAsia all ready out of the box. WebSocket feeds on Kalshi and Polymarket (~25ms), Predict.fun and SX Bet via API (P2P prediction markets with no account limits), Stake.com via API integration (crypto sportsbook with USDT, BTC, ETH funding), Cloudbet and PS3838 via REST, BC.Game, Bet105, BetInAsia, and Sportmarket via tuned headless browser with ~20ms DOM observation.

Calibrate any sportsbook

For any book without an API, the bot sits directly on the page with a headless browser. A MutationObserver catches odds changes in ~20ms. That's faster than any third-party API that has to scrape the same page, process it, and relay it to you (500-2000ms).

Community-shared calibrations

Members share and grab proven scraper configs for different books and bet types: moneyline, over/under, BTTS, handicap. Each calibrated independently. Skip the setup, go live on a new venue in minutes.

14-step safety pipeline

Kill switch, naked leg tracking, cooldowns, exposure limits, dedup, per-match rate limiting. Every trade passes through before execution.

Live in-play value betting & arbitrage

Edges are biggest during live events when odds shift fast. Across all connected venues, the bot fires one-sided value bets the moment a live price drifts above its true probability, and locks arbs the moment a spread opens between venues. Sub-second reaction time on price movements that last seconds.

Strategy Agents

Independent agents per sport, market type, or venue. Each agent owns its own edge thresholds, execution logic, risk limits, reference venues, and paper or live mode. Run dozens in parallel and tune them independently. Your NBA value-bet agent at Stake.com has nothing to do with your Kalshi-vs-Polymarket cross-venue arb agent on US politics.

Encrypted local credentials

All API keys and bookmaker credentials are stored locally on your machine, encrypted at rest. Nothing is transmitted to any external server. You keep full control of your accounts.

Account Switching

New

Manage credentials across all your sportsbook accounts in one place, with Fernet-encrypted storage and per-session browser isolation. Switch profiles cleanly with a hot-restart that opens a fresh browser context, normalizes the navigator object, and matches locale and timezone to the venue. Your accounts stay separate.

Value Betting with Auto-Sniper Re-fire

New

One-sided edge bets that re-fire when the edge improves. Pre-match and in-play.

Value betting finds odds at soft bookmakers that are higher than the true probability implied by sharp reference lines. Unlike arbitrage, you only bet one side: the side where the edge is positive. Higher expected return over time, no hedge leg needed. Enable No-Vig Odds to strip the bookmaker margin from sharp lines for a cleaner true-probability reference.

Live and in-play value betting: in-play markets are where soft books lag hardest. The moment a live price drifts above its true probability after a goal, red card, or momentum swing, the agent fires before the book catches up, in about 20 to 25 milliseconds. This is value betting on live games done at machine speed, not by hand.

Auto-Sniper re-fire: after a value bet fires, the agent keeps tracking that match. If the edge improves beyond your re-fire threshold, it automatically places another bet on the same outcome. Set your minimum edge improvement, max re-fires per match, and bet size. The bot compounds into positions that keep getting better.

Strategy Agent: value_bet
Strategy Type
cross_allcross_bookvalue_bet
Reference Venues
kalshipolymarketpredict_funsx_betcloudbetps3838
Target Venue
Auto (best odds)kalshipolymarketpredict_funstakebc_gamecloudbet
No-Vig Odds
Remove bookmaker margin from sharp odds
Auto-Sniper
Auto-Track & Re-fire
Re-fire Edge Improvement5%
Max Re-fires / Match3
Re-fire Bet Size$50
Arsenal ML @ 2.15+3.2% edgefired
Arsenal ML @ 2.15re-fire if +5%tracking

Sniper Mode: limit orders on any bookmaker

New

For value bettors: set your price, the bot waits and fires.

Bookmakers don't offer limit orders. Now you have them. Pick a match, select an outcome, set the minimum odd you want and your stake. The agent monitors every connected venue and fires the moment your price is available. One shot, done, moves on. Stack multiple targets across matches. Stays tucked away until you need it and never clutters your normal workflow.

Sniper Target #1armed
MatchReal Madrid vs Bayern
OutcomeHome Win (1)
Best odd2.15
Target≥ 2.10
Stake$75.00
PSG vs Man CityO2.5 · $50fired
Barça vs InterBTTS · $60armed

Edge Lab: backtest your football betting angles

Experimental

Your theory. Ten seasons of proof. One click.

Describe a betting angle in plain English (tired teams, wind kills goals, new-manager bounce) and backtest it in about a second against 66,000+ real matches across 18 European leagues and 10 seasons. Every match settles at Pinnacle closing odds, the sharpest price in the market, so a rule that passes here beat the hardest benchmark there is. Up to 66 pre-match data points per match: form, rest, xG, Elo, weather, referee, manager changes, and more. Edge Lab does not predict winners or hand you picks. It tests the rule you define.

Winning angles save to My Angles and arm as filters on your value-bet agents, so the bot fires only on matches your rule approves, and every fire shows the rule behind it. Football only while experimental.

See how Edge Lab works

Backtests are historical evidence, not guarantees.

Edge Labillustration
Your angle
Home win when away rest days is at most 3 and home rest days is at least 5
ResultFAIL
ROI
-14.29%
Total bets
676
Win rate
38.8%
Avg odds
2.866
The classic tired-legs theory, settled at Pinnacle closing odds. It loses.
Intelligence Layer

AI predictions, weather, news, and sharp odds

Beyond detection. The intelligence layer ingests sharp aggregator data, weather model runs, beat reporter feeds, and predictive AI to produce a fair line that updates before book lines react. Every value-bet and arb strategy can opt in to any combination of these signals.

Sharp odds aggregator

New

A multi-book true-odds reference that blends 11 sharp books including Pinnacle, Pin88, BetIsn, and BetDEX into one tighter true-odds line. Drives value-bet edges, halts trades when sharps freeze a market on goals or red cards (5-15 seconds before soft books react), and picks the value leg of every arb so the engine fires the cheaper side first. 28,000+ live events covered across soccer, tennis, basketball, hockey, baseball, NFL, MMA, and more. Pure reference data, no executor.

Weather model ingestion

New

Continuous weather model runs feed stadium-level forecasts (precipitation, wind speed, temperature) into the value-bet engine. Outdoor soccer markets get a weather edge signal 5 to 30 minutes before book lines react to the latest forecast. Pre-line-move conditions are tagged on every relevant match so your strategies fire against the freshest forecast, not the stale one the soft book is still pricing.

News & lineup signals

New

Injury announcements, starting-XI confirmations, manager decisions, and team news parsed in real time. A late lineup change or pre-match injury can move a soccer moneyline or BTTS line 3 to 6 percent in 30 seconds with soft books lagging the sharp response. The agent halts firing on stale lines and queues bets against venues that have not yet repriced. Major European soccer leagues covered.

Per-market predictive AI

New

Trained per-sport, per-market models output a probability estimate for every outcome on every connected market. Combined with the 11-book sharp aggregate and the alternative-data signals, the synthesis produces a fair line that updates faster than any single book. On niche markets where Pinnacle is slow to update, the AI line is the freshest reference available to your value-bet and arb strategies.

Claw Arbs vs third-party odds services

Other arb finders rely on third-party odds APIs that scrape bookmaker pages, process the data, and relay it to you, adding 500-2000ms of delay. Claw Arbs connects directly to venue APIs via WebSocket and sits on bookmaker pages with a headless browser, catching odds changes at the source in ~20ms. By the time a third-party feed updates, your trade is already placed.

~1.2s
other services
~20ms
claw arbs
How it works

How to find arbitrage bets automatically

01

Connect to sharp and soft sportsbooks

Kalshi, Polymarket, Polymarket US, Predict.fun, SX Bet, Sportmarket, Stake.com, BC.Game, Cloudbet, Bet105, Pinnacle (PS3838), and BetInAsia come pre-installed. Compare sharp bookmaker odds (Sportmarket, Pinnacle, BetInAsia) against soft books and prediction markets to find sure bets and value edges.

02

Add any bookmaker with community configs

Want more venues? The community shares calibrations: configs that sit directly on a bookmaker's page and catch odds changes in ~20ms via DOM observation. Works with any sportsbook: Bet365, DraftKings, FanDuel, William Hill, and more.

03

Automated arbitrage and value bet execution

Three engines scan for arbitrage opportunities and value bets across all connected venues. When an edge is found, the bot places both legs of an arb or a single-side value bet, fully automated.

Get Claw Arbs

Claw Arbs is a membership. New members start with a 7-day free trial; alpha members unlock the founding rate with the key from their app. Your download link arrives at checkout and in your welcome email.

See membership plans

Windows, macOS & Linux. 7-day free trial, cancel anytime.

✓

Certified by Microsoft and Apple

Claw Arbs is officially certified by both Microsoft and Apple, confirming the app is safe, virus-free, and published by us.

⚠

About antivirus warnings. Because Claw Arbs is an automated trading bot, a few antivirus programs may flag it as a false positive. This is common for any trading automation tool and does not mean the app is unsafe. Microsoft and Apple have already certified it. If your antivirus blocks it, simply add an exception for the install folder.

⊞

Windows: If SmartScreen still pops up on first launch, click "More info" then "Run anyway". If Defender removes the file, go to Windows Security → Protection history and restore it.

macOS: If Gatekeeper still asks for confirmation on first launch, open System Settings → Privacy & Security, scroll to the bottom, and click "Open Anyway". You only need to do this once.

🐧

Linux: Run chmod +x ClawArbs then ./ClawArbs from terminal. Requires GTK3 + WebKit2GTK.

🔒

Your venue credentials are encrypted and stored locally on your device. They are never sent to external servers, only to the venue itself for authentication.

Frequently asked questions

Arbitrage & value betting FAQ

Get in touch

Questions, feedback, or partnership inquiries.

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