Claude Code 2.1.277 adds AGENTS.md support, finally

josh_wills · x · 2026-09-19

Claude Code now supports AGENTS.md starting in version 2.1.277: when no CLAUDE.md exists in a folder, Claude will check for and use AGENTS.md, with the behavior toggleable in /config — making one agent instruction file portable across coding tools. The internet's reaction: "fucking finally."

Related event: Claude Code v2.1.277 Adds Native Support for the AGENTS.md Standard(18 posts)→

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