iota-sdk is used at run time in 4 crates (of which 3 optionally).

Depender (with downloads and own rev deps) iota-sdk version
identity_stronghold ^1.1.5
130 6 identity_iota_core optional ^1.1.5
110 identity_iota dev ^1.1.5
100 2 identity_resolver dev ^1.1.5