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7/5/2026
How I built a real-time whale tracker for Polymarket using Node.js and a CLI

How I built a real-time whale tracker for Polymarket using Node.js and a CLI

Short summary

Developer built WhaleTrack, a real-time Node.js application that monitors high-value trader movements on Polymarket's $3.89B World Cup prediction market using Bullpen CLI for live data feeds. The tracking tool is live at whaletrack.app and demonstrates practical market-intelligence tooling for decentralized prediction platforms. The author is considering open-sourcing key components if there's community interest.

  • •WhaleTrack monitors large wallet movements (whales) on Polymarket's prediction market
  • •Built with Node.js backend and Bullpen CLI for real-time market data integration
  • •Live product at whaletrack.app; author considering open-sourcing components

Generated with AI, which can make mistakes.

#product-launch#market-trend#open-source
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