Claude Code adds AGENTS.md support in v2.1.277, falling back when no CLAUDE.md exists

BLUECOW009 · x · 2026-09-19

Claude Code v2.1.277 now checks for and uses AGENTS.md when no CLAUDE.md is present in a folder, with a toggle in /config — enabling one shared agent instruction file across coding tools. Tobi Lütke endorsed the move.

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