serde-pyobject is used at run time in 4 crates (of which 2 optionally).

Depender (with downloads and own rev deps) serde-pyobject version
750 outlines-core ^0.4.0
550 1 eppo_core optional ^0.4.0
outlines-core-rs ^0.4.0
szurubooru-client optional ^0.4.0