intellectronica/ruler: Sync the Same Rules Across All Coding Agents From One Source of Truth — 2.6K Stars

GitHub·medium signal

Ruler is a TypeScript CLI that maintains a single rule definition and syncs it to the native formats of Aider, Claude Code, Codex, and other coding agents (CLAUDE.md, .cursorrules, .aiderignore, etc.) automatically. As teams run multiple agents simultaneously, maintaining separate per-tool configs has become a real maintenance burden — ruler collapses this to one canonical file. At 2,560 stars, it's gaining traction as practical infrastructure for multi-agent developer workflows.