Since we added support for Agent Skills, we became heavy users of them. There are now fifteen skills in the Amp repository.
But one frustration we had was that skills were only invoked when the agent deemed that necessary. Sometimes, though, we knew exactly which skill the agent should use.
So we made skills user-invokable: you, as the user, can now invoke a skill, which will force the agent to use it when you send your next message.
Open the command palette (Cmd/Alt-Shift-A in the Amp editor extensions or Ctrl-O in the Amp CLI) and run skill: invoke.