Use your team's private packages or design system in v0 with one shared npm credential.
Set 𝙽𝙿𝙼_𝚃𝙾𝙺𝙴𝙽 or 𝙽𝙿𝙼_𝚁𝙲 once as a sensitive shared environment variable on Vercel. The credential is injected at the network layer. The model and agent never see it.