The mononuclear monoligand silver(0) complex AgPF3 has been prepared by reaction of Ag-107 atoms with PF3 at 77 K in an adamantane matrix on a rotating cryostat. This species has the magnetic parameters a107(1) = 1685 +/- 0.3 MHz, a31(1) = 311 +/- 0.1 MHz, a19(3) = 37.3 +/- 0.1 MHz, and g = 2.0020 +/- 0.0001. It is a Ag-centered radical with a 2A1 ground state in the point group C30 formed by interaction of PF3 with Ag rather than a phosphorus-centered radical formed by addition of Ag to PF3.