Betfair Edge MCP

Betfair sports betting analysis tools for value detection, CLV measurement, and edge quantification. Based on live betting data from 279+ bets across 12 sports.

What it does

| Tool | Description | |------|-------------| | get_sport_efficiency | Market efficiency map — which sports have confirmed positive CLV, which to avoid | | compute_bet_edge | Calculate edge % and Kelly stake size from your probability estimate vs market odds | | analyze_clv | Compute Closing Line Value — the single most important edge metric in sports betting | | get_live_markets | Fetch upcoming Betfair markets for a sport (requires API credentials) | | get_value_summary | Full orientation briefing: edge map, thresholds, danger patterns |

The Edge Framework

CLV (Closing Line Value) is the gold standard metric for sports betting. If you consistently get better prices than the market's closing line, you have real long-run edge — regardless of short-term win/loss variance.

CLV = (entry_price / closing_price) - 1   [for BACK bets]
CLV = (closing_price / entry_price) - 1   [for LAY bets]

Positive CLV = you beat the market = long-run edge

Edge Map (Live Data, March 2026)

| Market | Average CLV | Status | |--------|-------------|--------| | Tennis MATCH_ODDS | +0.6% | ✅ Deploy | | Football BTTS | +0.4% | ✅ Deploy | | Ice Hockey MATCH_ODDS | +0.5% | ✅ Deploy | | Basketball MATCH_ODDS | +0.3% | ✅ Deploy | | Rugby Union MATCH_ODDS | +0.3% | ✅ Deploy | | Football MATCH_ODDS | -14.76% | ❌ Avoid | | Football Over/Under | -14.6% | ❌ Avoid | | Football Correct Score | -2.3% | ❌ Avoid |

Installation

Claude Desktop

{
  "mcpServers": {
    "betfair-edge": {
      "command": "node",
      "args": ["/path/to/betfair-edge-mcp/index.js"],
      "env": {
        "BETFAIR_USERNAME": "your-username",
        "BETFAIR_PASSWORD": "your-password",
        "BETFAIR_APP_KEY":  "your-app-key"
      }
    }
  }
}

Credentials are optional — get_sport_efficiency, compute_bet_edge, analyze_clv, and get_value_summary all work without them. Only get_live_markets requires API access.

Claude Code (CLI)

claude mcp add betfair-edge node /path/to/betfair-edge-mcp/index.js \
  --env BETFAIR_USERNAME=your-username \
  --env BETFAIR_APP_KEY=your-app-key \
  --env BETFAIR_PASSWORD=your-password

Requirements

• Node.js 18+
• Betfair API credentials (for live market access)
  • Free developer account: developer.betfair.com
  • Requires client SSL certificates for live access

Quick start

git clone <repo>
cd betfair-edge-mcp
npm install
node index.js  # Runs on stdio (MCP protocol)

Example prompts

Show me which Betfair sports have positive CLV and which to avoid
I think Man City has 65% chance of winning at 1.85 odds. Is this value?
I backed at 2.10 and closing price was 1.95. What's my CLV?
Get me upcoming tennis markets in the next 4 hours
Give me a full value betting briefing before I log into Betfair

Key thresholds

• Minimum edge: 1.5% above implied market probability
• Per-match exposure: Max 8% of bankroll combined for same event
• Kelly sizing: Half-Kelly (conservative)
• Tennis edge cap: 8% (edge inverts above this — CLV-validated quirk)
• Competition penalties: Bundesliga +3%, Ligue 1 +2%, WTA +1.5%

Statistical note

CLV signals are valid from N≥200 bets per sport (Bailey & López de Prado 2014). Small sample sizes (<50 bets) should be treated as directional only, not statistically significant.

License

MIT