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):

| Book | The Odds API Key | Why It Matters | |------|-----------------|----------------| | Pinnacle | pinnacle | Lowest vig, sharpest global market | | Circa | circasports | Sharpest US book, accepts large limits | | Bookmaker | bookmaker | Long-standing sharp-friendly book | | BetOnline | betonlineag | Accepts sharp action, moves early | | DraftKings | draftkings | High volume, useful as public benchmark | | FanDuel | fanduel | High 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.

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/).