.cursorrules vs CLAUDE.md vs AGENTS.md 2026: Which AI Config File Should You Use?
If your AI coding agent keeps making the same mistakes — using the wrong import style, ignoring your test conventions, or not knowing which files to avoid — the fix is a config file, not a better prompt. In 2026, three formats dominate: .cursorrules for Cursor-only teams, CLAUDE.md for Claude Code users who want the most features, and AGENTS.md for teams using multiple AI tools. Here is how to choose. ...