Managing metal4 synchronization
Skill apple/game-porting-toolkit/game-porting-skills/skills/managing-metal4-synchronization
Resources for porting games and engines to Apple platformsFrom the repository description
npx -y skills add apple/game-porting-toolkit --skill managing-metal4-synchronizationAssembled from the repository path, not quoted from the project. Check it against their README if it does not work.