Require explicit Fabric support
Look for documentation that names Fabric, the supported Minecraft version, and required libraries. Avoid relying on filenames alone.
Do not cross-install loaders
Files designed for a different mod loader should not be copied into Fabric simply because the underlying game version is the same.
Check dependencies together
Loader, API libraries, mod version, and Minecraft version form a compatibility set. Verify them as a group rather than individually.
Test in a clean profile
A clean or minimal profile makes loader problems easier to distinguish from conflicts caused by a larger mod collection.
Practical next step
Return to the compatibility section to compare ecosystems, or review the Download section before opening the supplied archive.