Built a context firewall for AI coding tools over the weekend : here's why and how

Every time you paste a log file into Cursor, or ask Claude Code to debug ContextDuty is a local-first context firewall. It sits between your files Demo link - https://asciinema.org/a/uouCCzZe7UkbomNM (vibecoded on friend's laptop) pip install contextduty It also runs as an MCP server — so Cursor,