johnleslie_pm
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- AI companies' DNS: 17 Anthropic-verified, 23% have spoofable email (domainintel.vercel.app)
- Show HN: I built a free AI startup validator – it scored a dog walking app 4/10 (tools.predictionoracle.io)
- Show HN: Free Google Places API alternative using OpenStreetMap (no API key) (bizdata-web.vercel.app)
- Are prediction markets well-calibrated? Analysis of 7,661 Polymarket markets (polymarket-calibration.vercel.app)