Problem I’ve tried to make Cursor to write it’s own rules. In theory it should’ve worked like: You solve a task in agent mode Ask him to update related rules to keep it updated It just does not work. Cursor seems like does not know what “rules” is. Ok, fine, understandable. Next try. I just writ…

But this seems to disable the automatic ‘@file’ function in mdc rules…

This has no effect on the USAGE of rule files

Since update 0.49.x, this is no longer an issue.

Well, now we have a bug that I cannot apply changes partially. The buttons just do nothing. I can apply the whole file, but clicking “Apply” on code lines does nothing.

The issue hasn’t been resolved yet. I am using the latest update, and I am having the same problem. I cannot accept partial changes within the .mdc files in rules (.cursor/rules).

Cursor agent cannot write to .cursor/rules (even to *.mdc files)

Support Bug Reports

Biggs (Biggs) March 28, 2025, 12:54pm 2

Fixed here: Cursor agent cannot write to .cursor/rules files - #5 by jazzmind

Topic		Replies	Views
Cursor rules are not updated within agent mode Bug Reports	3	179	April 23, 2025
Cursor agent cannot write to .cursor/rules files Bug Reports	10	1410	April 20, 2025
.mdc files in .cursor/rules/ not or rarely writeable by Cursor Agent Bug Reports	2	308	April 20, 2025
Enable agent to update .cursor/rules Bug Reports	20	1116	March 22, 2025
Bug: edit_file and file operations fail silently in .cursor/rules directory Bug Reports	0	146	March 18, 2025

Cursor agent cannot write to .cursor/rules (even to *.mdc files)

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