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<title>Polymarket Scanner — Find Prediction Market Mispricings | Python</title>
<meta name="description" content="Polymarket Scanner finds mispricings and arbitrage opportunities on prediction markets. Scans Polymarket for edge, tracks odds movement, and exports alerts. Python CLI tool.">
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{
  "@context":"https://schema.org",
  "@type":"SoftwareApplication",
  "name":"Polymarket Scanner",
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  "operatingSystem":"Windows, macOS, Linux",
  "offers":[
    {"@type":"Offer","price":"0","priceCurrency":"USD","description":"Free open-source edition","url":"https://github.com/vesper-astrena/polymarket-scanner"},
    {"@type":"Offer","price":"29","priceCurrency":"USD","description":"Pro edition with advanced features","url":"https://vesperfinch.gumroad.com/l/kxbax"}
  ],
  "author":{"@type":"Organization","name":"Vesper Finch"},
  "description":"Find mispricings and arbitrage opportunities on Polymarket and other prediction markets."
}
</script>
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<header>
  <div class="container">
    <a href="index.html" class="logo">Vesper<span>Finch</span></a>
    <nav>
      <a href="csv-cleaner.html">CSV Cleaner</a>
      <a href="promptlab.html">PromptLab</a>
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</header>

<section class="hero">
  <div class="container">
    <span class="badge">Markets</span>
    <h1>Find Prediction Market<br>Mispricings Automatically</h1>
    <p class="subtitle">Polymarket Scanner watches the odds so you don't have to. It surfaces arbitrage opportunities, tracks price movement, and alerts you when edge appears.</p>
    <div class="btn-group">
      <a href="https://github.com/vesper-astrena/polymarket-scanner" class="btn btn-outline">Get it Free on GitHub</a>
      <a href="https://vesperfinch.gumroad.com/l/kxbax" class="btn btn-green">Get Pro &mdash; $29</a>
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</section>

<!-- What it does -->
<section>
  <div class="container">
    <div class="section-header">
      <h2>What It Does</h2>
      <p>Prediction markets are information-rich but time-consuming to monitor. Polymarket Scanner automates the tedious parts.</p>
    </div>
    <div class="features">
      <div class="feature">
        <h4>Arbitrage Detection</h4>
        <p>Finds contracts where YES + NO prices sum to less than $1.00, or multi-outcome markets with guaranteed profit opportunities.</p>
      </div>
      <div class="feature">
        <h4>Edge Scoring</h4>
        <p>Compares market prices against aggregated polling data, model predictions, and historical base rates to surface mispriced contracts.</p>
      </div>
      <div class="feature">
        <h4>Odds Movement Tracking</h4>
        <p>Monitors price changes over time. Flags sharp moves that may indicate new information or manipulation.</p>
      </div>
      <div class="feature">
        <h4>Volume Analysis</h4>
        <p>Tracks liquidity depth and trading volume. Helps you size positions appropriately and avoid thin markets.</p>
      </div>
      <div class="feature">
        <h4>Custom Watchlists</h4>
        <p>Define the markets you care about. Get alerts only for opportunities that match your criteria.</p>
      </div>
      <div class="feature">
        <h4>Export &amp; Alerts</h4>
        <p>Output to CSV, JSON, or webhook. Pipe to Slack, Discord, or email for real-time notifications.</p>
      </div>
    </div>
  </div>
</section>

<!-- Example Output -->
<section style="background:var(--surface)">
  <div class="container">
    <div class="section-header">
      <h2>Example Output</h2>
      <p>Run a scan and see opportunities ranked by edge.</p>
    </div>

    <div class="code-block">
      <span class="prompt">$</span> <span class="cmd">polymarket-scanner scan --min-edge 5 --min-volume 10000</span><br><br>
      <span class="out">Scanning 847 active markets on Polymarket...</span><br>
      <span class="out">Filtering: min edge 5.0% &middot; min volume $10,000</span><br><br>

      <span class="out">Found 7 opportunities:</span><br><br>

      <span class="out"> #  Market                              Price   Est.Fair  Edge    Volume</span><br>
      <span class="out"> 1  Fed rate cut by June 2026            $0.34   $0.46    +12.3%  $482K</span><br>
      <span class="out"> 2  SpaceX Starship orbit by Q2          $0.72   $0.63     -9.1%  $215K</span><br>
      <span class="out"> 3  Bitcoin above $150K by Dec            $0.28   $0.35     +7.0%  $1.2M</span><br>
      <span class="out"> 4  UK election before 2027              $0.15   $0.21     +6.2%  $89K</span><br>
      <span class="out"> 5  GPT-5 release by Sep 2026            $0.55   $0.49     -6.0%  $340K</span><br>
      <span class="out"> 6  US recession in 2026 (NBER)          $0.22   $0.27     +5.4%  $670K</span><br>
      <span class="out"> 7  FIFA World Cup 2026 — Brazil          $0.18   $0.23     +5.1%  $3.1M</span><br><br>

      <span class="comment"># Check for pure arbitrage</span><br>
      <span class="prompt">$</span> <span class="cmd">polymarket-scanner arb --min-profit 0.5</span><br>
      <span class="out">Scanning multi-outcome markets for arbitrage...</span><br>
      <span class="out">Found 2 arbitrage opportunities:</span><br><br>
      <span class="out"> Market: "Next UK Prime Minister"</span><br>
      <span class="out"> Sum of YES prices: $0.94 &middot; Guaranteed profit: 6.4%</span><br>
      <span class="out"> Strategy: Buy all outcomes &middot; Risk: $94 &middot; Return: $100</span>
    </div>
  </div>
</section>

<!-- Comparison Table -->
<section>
  <div class="container">
    <div class="section-header">
      <h2>Free vs Pro</h2>
      <p>Free gives you basic scanning. Pro adds real-time monitoring, historical data, and advanced analytics.</p>
    </div>
    <div class="table-wrap">
      <table>
        <thead>
          <tr><th>Feature</th><th>Free</th><th>Pro ($29)</th></tr>
        </thead>
        <tbody>
          <tr><td>Market scanning (on-demand)</td><td class="check">Yes</td><td class="check">Yes</td></tr>
          <tr><td>Arbitrage detection</td><td class="check">Yes</td><td class="check">Yes</td></tr>
          <tr><td>Basic edge scoring</td><td class="check">Yes</td><td class="check">Yes</td></tr>
          <tr><td>CSV/JSON export</td><td class="check">Yes</td><td class="check">Yes</td></tr>
          <tr><td>Top 10 results per scan</td><td class="check">Yes</td><td class="check">Unlimited</td></tr>
          <tr><td>Continuous monitoring (daemon)</td><td class="cross">&mdash;</td><td class="check">Yes</td></tr>
          <tr><td>Webhook / Slack / Discord alerts</td><td class="cross">&mdash;</td><td class="check">Yes</td></tr>
          <tr><td>Historical odds data &amp; charting</td><td class="cross">&mdash;</td><td class="check">Yes</td></tr>
          <tr><td>Custom watchlists</td><td class="cross">&mdash;</td><td class="check">Yes</td></tr>
          <tr><td>Volume &amp; liquidity depth analysis</td><td class="cross">&mdash;</td><td class="check">Yes</td></tr>
          <tr><td>Multi-platform support (Kalshi, Manifold)</td><td class="cross">&mdash;</td><td class="check">Yes</td></tr>
          <tr><td>Portfolio tracking &amp; P&amp;L</td><td class="cross">&mdash;</td><td class="check">Yes</td></tr>
          <tr><td>Priority support</td><td class="cross">&mdash;</td><td class="check">Yes</td></tr>
        </tbody>
      </table>
    </div>
  </div>
</section>

<!-- CTA -->
<section>
  <div class="container">
    <div class="cta-banner">
      <h2>Let the scanner find the edge</h2>
      <p>One-time purchase. No subscription, no API fees from us. Bring your own Polymarket account.</p>
      <div class="btn-group">
        <a href="https://github.com/vesper-astrena/polymarket-scanner" class="btn btn-primary">Free on GitHub</a>
        <a href="https://vesperfinch.gumroad.com/l/kxbax" class="btn btn-outline">Get Pro &mdash; $29</a>
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