If a project has no CLAUDE.md, Claude Code now reads AGENTS.md, a file with project instructions.

AGENTS.md support is not yet available on Bedrock, Vertex, or Foundry.

Claim check:

  • Claude Code 2.1.277 adds AGENTS.md support. (confirmed by the publication itself: evidence; «v2.1.277 ca02e7d What’s changed Added AGENTS.md support: in a project with no CLAUDE.md, Claude Code reads AGENTS.md instead; change it under “Project instructions” in /config (not yet on Bedrock, Vertex or Foundry)»)
  • If a project has no CLAUDE.md, Claude Code reads AGENTS.md instead. (confirmed by the publication itself: evidence; «Added AGENTS.md support: in a project with no CLAUDE.md, Claude Code reads AGENTS.md instead; change it under “Project instructions” in /config (not yet on Bedrock, Vertex or Foundry)»)
  • AGENTS.md support is not yet available on Bedrock, Vertex, or Foundry. (confirmed by the publication itself: evidence; «Added AGENTS.md support: in a project with no CLAUDE.md, Claude Code reads AGENTS.md instead; change it under “Project instructions” in /config (not yet on Bedrock, Vertex or Foundry)»)

Publications:

Primary sources:

score 76.8 out of 100 · kind: release · update 8