Cursor (.cursor/rules/*.mdc)

Cursor’s modern multi-file rules system. Each .mdc file declares a description, optional file globs for scoping, and an alwaysApply flag. Multiple rules files compose; each one only loads when its glob or alwaysApply matches.

File path
.cursor/rules/main.mdc
Length cap (recommended)
~400 lines
Frontmatter
Yes (YAML)
File globs
Yes

Format quirks

  • Files live in .cursor/rules/ and end in .mdc
  • Required frontmatter: description, globs, alwaysApply
  • Globs can scope a rule to specific files (e.g. **/*.tsx)
  • Multiple .mdc files compose at request time
Generate a main.mdcConvert an existing rules file

Browse stack examples

Every stack page in the library has a one-click copy button for Cursor (.cursor/rules/*.mdc). Open any of these and pick "Cursor (.cursor/rules/*.mdc)" from the format dropdown.

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Official docs: https://docs.cursor.com/context/rules