TweakXL (nexus | github) is a mod by psiberx. It lets you alter Cyberpunk's Tweak Database, changing properties of NPCs and items or even adding new entries.
How do I use it?
By placing .yaml or .tweak files in Cyberpunk 2077/r6/tweaks, or .xl files in Cyberpunk 2077/archive/pc/mod.
No matter the file extension, the file contents must be .yaml or .json