Perpetual premium and basis for a symbol: OKX perp mark price versus the spot index, returning the absolute basis, premium percent and an interpretation of perp positioning

Perpetual premium and basis for a symbol: OKX perp mark price versus the spot index, returning the absolute basis, premium percent and an interpretation of perp positioning. Live data for basis trades, premium monitoring and spot-perp divergence. perp premium, spot perp basis, mark vs index, contango