AIClaude Code adds AGENTS.md support in version 2.1.277
The announcement says Claude Code will use AGENTS.md when a folder has no CLAUDE.md. Users can toggle this behavior in /config.
TLDR
A September 18, 2026 announcement says Claude Code is adding AGENTS.md support starting with version 2.1.277. If a folder has no CLAUDE.md, Claude will check for and use AGENTS.md. The behavior can be toggled in /config.
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Claude Code adds AGENTS.md support in version 2.1.277
The announcement says Claude Code will use AGENTS.md when a folder has no CLAUDE.md. Users can toggle this behavior in /config.