TREE NEWS update: Anthropic’s Claude Code began reading AGENTS.md files with the release of version 2.1.277, letting the tool fall back to the cross-vendor standard when a project folder has no CLAUDE.md. The change follows a GitHub issue requesting AGENTS.md support that has drawn more than 5,200 upvotes and 300 comments since August 2025, making it the repository’s most-requested feature.
Claude Code 2.1.277 Adds Native AGENTS.md Support
AI take
The significance is less about Claude Code and more about AGENTS.md consolidating as a de facto cross-vendor convention: a tool from the company that popularized CLAUDE.md now defers to the shared standard rather than its own file. That lowers switching friction for teams running multiple coding agents, and it shifts leverage toward whoever maintains the AGENTS.md spec. The open question is whether the fallback stays a fallback or becomes the default, and whether other vendors follow with native support or keep proprietary equivalents.
Generated by AI for reference only.
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