Show HN: I got tired of syncing Claude/Gemini/AGENTS.md and .cursorrules

I ran into a related problem. Before syncing my context files I wanted to know which ones are even worth keeping.

Turns out half my .cursor/rules were vague stuff like "follow best practices" that just wasted tokens. And my CLAUDE.md overlapped with AGENTS.md on half the instructions.

So I built a small tool that measures the token cost per file and lints for conflicts/dead weight: https://github.com/ofershap/ai-context-kit

Run `npx ai-context-kit measure` on any project and you get a per-file token breakdown. Helped me cut my context budget by ~40% without losing anything useful.