vig-calculator

# Vig Calculator Calculate the vig (juice/overround) for any sportsbook market and rank books by efficiency. ## When to Use Use this skill when the user asks about: - Vig, juice, or overround on a market - Hold percentage for a sportsbook - Removing vig to find fair/true odds - Ranking sportsbooks by efficiency or sharpness - Which book has the lowest juice - The AgentBets Vig Index ## Operations ### 1. Calculate Vig for a Two-Way Market Given American odds for both sides: ```python python3 -c " import sys odds = [int(x) for x in sys.argv[1:]] probs = [] for o in odds: if o < 0: probs.append(abs(o) / (abs(o) + 100)) else: probs.append(100 / (o + 100)) total = sum(probs) vig = (total - 1) * 100 hold = (1 - 1/total) * 100 print(f'Implied probs: {[round(p*100,2) for p in probs]}%') print(f'Sum: {round(total*100,2)}%') print(f'Vig (overround): {round(vig,2)}%') print(f'Hold: {round(hold,2)}%') fair = [round(p/total*100,2) for p in probs] print(f'No-vig fair probs: {fair}%') " ODDS_SIDE_A ODDS_SIDE_B ## About Built by [AgentBets](https://agentbets.ai) — full tutorial at [agentbets.ai/guides/openclaw-vig-calculator-skill/](https://agentbets.ai/guides/openclaw-vig-calculator-skill/). Part of the [OpenClaw Skills series](https://agentbets.ai/guides/#openclaw-skills) for the [Agent Betting Stack](https://agentbets.ai/guides/agent-betting-stack/).