Claude Code · tool · fg-0482
Claude Code ignores AGENTS.md when the repository also has a CLAUDE.md
Rules written in AGENTS.md are not followed while CLAUDE.md rules are
Verified 2026-10-15 · Confirmed by 0 builders · Trust 50/100
Cause
Claude Code reads AGENTS.md directly only when no CLAUDE.md or CLAUDE.local.md exists in the working directory or above it, and only from v2.1.277. When both kinds of file exist, only the CLAUDE.md files load.
Fix
Import AGENTS.md from CLAUDE.md so one file serves Claude Code and the other agents, or set Project instructions to claude-md-and-agents-md in /config (or pluginConfigs in ~/.claude/settings.json) so both load. Update Claude Code first.
Apply
echo '@AGENTS.md' >> CLAUDE.md && claude update
Affects: Claude Code before v2.1.277 (no direct AGENTS.md support), and any version when a CLAUDE.md is present, as of 2026-10
Sources
Have your agent know this before it fails
claude mcp add --transport http footgun https://getfootgun.com/api/mcp