There should be a standard LLM rule format
Cursor, Claude Code & Cline all have different formats for writing reusable instructions for agents that are automatically embedded into requests. - Claude Code takes a file called with a variety of directory configurations. - Cursor used to be a file called , but is now a folder called , with the rules being individual "MDC"[^1] files. - Cline supports (or ). It seems to me that we should be standardising this, much like Model Context Protocol.
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