https://tapeit.dev/blog/Notes on agent instruction files and keeping one document right everywhere.en https://tapeit.dev/blog/claude-md-agents-md-596-reposhttps://tapeit.dev/blog/claude-md-agents-md-596-reposMon, 26 Oct 2026 12:00:00 GMTWe read CLAUDE.md and AGENTS.md in 596 public repos. Most link them; 1 in 8 keep two copies, and 4 in 10 of those copies already differ. https://tapeit.dev/blog/which-agent-reads-which-filehttps://tapeit.dev/blog/which-agent-reads-which-fileMon, 26 Oct 2026 12:00:00 GMTCLAUDE.md, AGENTS.md, .cursor/rules, copilot-instructions.md, GEMINI.md: which file each coding agent reads, and which one wins. Checked October 2026. https://tapeit.dev/blog/agent-instruction-files-drifthttps://tapeit.dev/blog/agent-instruction-files-driftMon, 26 Oct 2026 12:00:00 GMTEvery coding agent reads its own instruction file, in every repo. Why CLAUDE.md, AGENTS.md and Cursor rules drift, and the six workarounds teams use.