Show HN: Stop manually syncing rules between Claude, Cursor, and Codex
nanxiaobei Sunday, January 18, 2026
I built AI Global because I was tired of the "configuration fragmentation" in the current AI tool landscape.
Every new AI assistant has its own way of handling context or rules: Claude Code uses CLAUDE.md, Cursor uses .cursorrules, Windsurf uses .windsurfrules, and so on. As I switched between these tools to find the best workflow, I found myself constantly copy-pasting my custom instructions and project rules across multiple hidden files. It was tedious and error-prone.
AI Global solves this by creating a single "Source of Truth" at ~/.ai-global/global.md. It automatically detects 30+ different AI tools and links them to this central configuration.
Key points:
No Fragmentation: Edit once in global.md, and every AI assistant gets updated instantly. Shared Skills: Beyond just instructions, it allows you to sync shared "skills", "agents", and "rules" directories across all tools. Pure Bash: No heavy dependencies, just a lightweight script that uses symlinks to keep things fast and transparent. Safe: It automatically backs up your original configs and supports a clean unlink if you want to revert. I'd love to hear how you manage your AI instructions or if there are any specific tools you'd like to see supported!