solana-stake-interface is used at run time in 155 crates (of which 5 optionally). It is a direct run-time dependency in 7 crates. It's used only as a dev dependency in 34 crates.

Depender (with downloads and own rev deps) solana-stake-interface version
298K 596 solana-program ^1.2.1
131K 15 solana-config-program ^1.2.1
80K 17 solana-sysvar ^1.2.1
38K 28 solana-stake-program ^1.2.1
2.0K 4 litesvm ^1.2.1
900 5 mollusk-svm ^1.0
280 2 mollusk-svm-fuzz-fixture ^1.0