Orchestrator skill.

An orchestrator skill is a Skills that calls several other skills in sequence to run a whole multi-step process end to end. Instead of doing one job, it coordinates a chain of them.

My YouTube publishing skill is a good example. It's an orchestrator: it calls five of my other skills in sequence, so one command takes a finished video all the way through to published.

You stop running things step by step. You build the small skills once, each doing its one job well, then wrap them in an orchestrator that fires them in the right order. One command, whole process done.