Do the sky130 standard cells come with schematics? I'm able to place symbols but not to descend into them. (inv_1 for instance).

I was able to find the spice models for the standard cells under

libs.ref/sky130_fd_sc_hd/spice/sky130_fd_sc_hd.spice

. For inv_1

.subckt sky130_fd_sc_hd__inv_1 A VGND VNB VPB VPWR Y
X0 VGND A Y VNB sky130_fd_pr__nfet_01v8 w=650000u l=150000u
X1 VPWR A Y VPB sky130_fd_pr__pfet_01v8_hvt w=1e+06u l=150000u
.ends

Thanks. Yes I knew the device sizes would be visible in the spice files. It's more of a convenience to be able to see the gate schematic in the editor. But not essential - everything else including the gds files are in the library. I believe Tim has placed this on a wish list.