Network engineer with zero coding builds free subnet scanner ARPradar using Claude Code
Lone_Wolf_555 · reddit · 2026-11-09
A network engineer who can't write Swift or Rust used Claude Code to build ARPradar, a free subnet scanner (SwiftUI on Mac, Tauri + Rust engine on Windows) that ARP-scans networks, names devices via DHCP/UPnP/SNMP/web titles, guesses device types, keeps per-organization scan history, and draws UniFi network maps exportable to PNG/PDF/SVG.
Notable Claude Code behaviors: it ran tests, waited for GitHub Actions builds, and tested UI in a browser with demo data before asking for human review; it showed mockups before building UI; and when Windows builds kept failing, it diagnosed GitHub download-server timeouts and stopped burning CI minutes on futile retries. Limits: it can't see the author's real LAN and API keys are entered manually. The author's role was knowing what a good scan looks like and judging when output was wrong.
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