staging-chain-spec-builder is used at run time in 3 crates (of which 1 optionally). It is a direct run-time dependency in 2 crates.

Depender (with downloads and own rev deps) staging-chain-spec-builder version
139K 16 polkadot-sdk optional ^10.0.0
1.8K 2 polkadot-omni-node-lib ^10.0.0