  To each finite-dimensional operator space $E$ is associated a commutative
operator algebra $UC(E)$, so that $E$ embeds completely isometrically in
$UC(E)$ and any completely contractive map from $E$ to bounded operators on
Hilbert space extends uniquely to a completely contractive homomorphism out of
$UC(E)$. The unit ball of $UC(E)$ is characterized by a Nevanlinna
factorization and transfer function realization. Examples related to
multivariable von Neumann inequalities are discussed.
