As of Oct 5, 2026, Cursor lets users replace the editor's system prompt with their own, while rules, skills, and tool schemas still load; the feature is being enabled account by account.
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Oct 5
Official
Cursor lets users replace its system prompt with their own
Cursor announced users can now replace the editor's system prompt with their own. Rules, skills, and tool schemas still load when a custom system prompt is set. The company says the feature is being enabled account by account.