Ask HN: Writing Custom Instructions for the AI

Hello HN, with the advent of AI coding, I'm starting wondering if people will switch from writing coding guides and guidelines for humans to writing them specifically for LLMs.

Vscode and other editors already let you insert custom instructions either globally or on repository basis. But as of now, everybody writes their own.

Will people begin to share their own? Will we see specialized websites with pre-made template instruction files for download? Does any website or awesome list exist yet?