Sharp Line Detector#

Monitor line movements at sharp sportsbooks. Detect steam moves, reverse line movement, and smart money signals.

When to Use#

Use this skill when the user asks about:

• Line movement on a game or sport
• Steam moves or sharp action
• Reverse line movement (RLM) signals
• Whether smart money has moved a line
• Pinnacle, Circa, or Bookmaker line changes
• Significant odds shifts since open

Sharp Book Keys#

The skill prioritizes lines from these market-making books (in order of sharpness):

BookThe Odds API KeyWhy It MattersPinnaclepinnacleLowest vig, sharpest global marketCircacircasportsSharpest US book, accepts large limitsBookmakerbookmakerLong-standing sharp-friendly bookBetOnlinebetonlineagAccepts sharp action, moves earlyDraftKingsdraftkingsHigh volume, useful as public benchmarkFanDuelfanduelHigh volume, useful as public benchmark

If Pinnacle odds are not available in the API response, fall back to Circa, then Bookmaker.

Configuration#

Environment variables for tuning thresholds (all optional):

• SHARP_SPREAD_THRESHOLD — Minimum spread movement in points to flag (default: 1.5)
• SHARP_ML_THRESHOLD — Minimum moneyline implied probability shift to flag (default: 0.05 = 5%)
• SHARP_SNAPSHOT_DIR — Directory for snapshot files (default: /tmp/openclaw-sharp-snapshots)

Operations#

1. Snapshot Current Lines#

Capture a timestamped snapshot of current odds from all books for a sport. Stores as JSON for later comparison.

bash

SPORT_KEY="${SPORT_KEY:-basketball_nba}"
SNAP_DIR="${SHARP_SNAPSHOT_DIR:-/tmp/openclaw-sharp-snapshots}"
mkdir -p "$SNAP_DIR"
TIMESTAMP=$(date +%Y%m%d_%H%M%S)

curl -s "https://api.the-odds-api.com/v4/sports/$SPORT_KEY/odds?apiKey=$ODDS_API_KEY&regions=us,eu&markets=h2h,spreads&oddsFormat=american&bookmakers=pinnacle,circasports,bookmaker,betonlineag,draftkings,fanduel" \
  | jq --arg ts "$TIMESTAMP" '{
    timestamp: $ts,
    sport: "'$SPORT_KEY'",
    games: [.[] | {
      id: .id,
      game: "\(.away_team) @ \(.home_team)",
      away: .away_team,
      home: .home_team,
      start: .commence_time,
      books: [.bookmakers[] | {
        key: .key,
        name: .title,
        h2h: [(.markets[] | select(.key=="h2h")).outcomes[] | {team: .name, odds: .price}],
        spread: [(.markets[] | select(.key=="spreads")).outcomes[] | {team: .name, point: .point, odds: .price}]
      }]
    }]
  }' > "$SNAP_DIR/${SPORT_KEY}_${TIMESTAMP}.json"

echo "Snapshot saved: ${SPORT_KEY}_${TIMESTAMP}.json ($(jq '.games | length' "$SNAP_DIR/${SPORT_KEY}_${TIMESTAMP}.json") games)"

## About

Built by [AgentBets](https://agentbets.ai) — full tutorial at [agentbets.ai/guides/openclaw-sharp-line-detector-skill/](https://agentbets.ai/guides/openclaw-sharp-line-detector-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/).