What
Claude Code now scans for a .cursorrules file (the rules file used by the Cursor editor) as one of the files it reads for project instructions and memory, alongside files like agents.md, agents.override.md, and gemini.md.
Why
Projects that already have Cursor rules set up will have those instructions picked up automatically, without needing to duplicate them into a Claude-specific file.
Names in the bundle.cursorrules
Documented inclaude-code/memory
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
Confirmed since
Anthropic's documentation has since written up .cursorrules, on How Claude remembers your project.
* Cursor rules in `.cursor/rules/` or `.cursorrules`memory see the edit
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agrees
Anthropic's documentation has since written up .cursorrules, on How Claude remembers your project.