Claude Code adds AGENTS.md support in v2.1.277, auto-fallback from CLAUDE.md

cedric_chee · x · 2026-09-19

Claude Code now supports AGENTS.md: starting with version 2.1.277, if a folder has no CLAUDE.md, Claude will look for and use AGENTS.md instead, with a toggle available in /config.

The move brings a top coding agent into line with the cross-tool AGENTS.md convention, pushing project instruction files toward broader standardization.

Related event: Claude Code Adds Native AGENTS.md Support Starting with v2.1.277(28 posts)→

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