Margen-Arb
Spot arbs across books
before the line moves.
Beta · Local install · The Odds API key required
- 01 Fetch
- Live odds feed
- 02 Scan
- 2-way and 3-way arbs
- 03 Size
- Stake calculator
Live odds feed
Pulls lines from major US books via The Odds API. Filter by sport, window, and bookmaker.
Arb detection
Surfaces 2-way and 3-way opportunities when combined implied probability drops below 100%.
Stake sizing
Eager Matrix calculator with fixed stake, target profit, and risk-bias controls.
Problem
Tab-hopping is not a strategy.
Manual scan
- Odds screens open across a dozen tabs
- Implied probability math in a spreadsheet
- Missed windows while lines move
Margen-Arb
- Unified feed with profit and time filters
- 2-way and 3-way detection built in
- Stake preview before you commit
How it works
Fetch, find, size.
One local dashboard for odds, filters, and stake math — no tab-hopping.
- 01
Fetch lines
Select sports and books. Margen-Arb loads current markets with built-in rate limiting and caching.
- 02
Find margin
Scan for arbs across H2H and soccer home/draw/away markets. Sort by profit or kickoff time.
- 03
Size the play
Preview stakes and guaranteed profit before you place anything. Sample-data mode when API limits hit.
Local dashboard — live odds feed, profit filters, and stake sizing in one view
Toolkit
Built for personal research.
- API
The Odds API
MLB, NBA, NFL, NCAAF, EPL, Champions League, and more.
- 2W
Two-way arbs
Head-to-head markets across matched book pairs.
- 3W
Three-way arbs
Home, draw, away coverage for soccer-style markets.
- CALC
Eager Matrix
Stake calculator with rounding and remainder handling.
Educational and personal use only. Not financial advice. Margen-Arb does not place bets. You are responsible for local laws and bookmaker terms of service.