Cargo Features

[dependencies]
xcm-fee-payment-runtime-api = { version = "0.3.0", default-features = false, features = ["std", "runtime-benchmarks"] }
default = std

The std feature is set by default whenever xcm-fee-payment-runtime-api is added without default-features = false somewhere in the dependency tree.

std default

Enables std of parity-scale-codec, frame-support, scale-info, sp-api, sp-runtime, sp-std, sp-weights, and staging-xcm

runtime-benchmarks

Enables runtime-benchmarks of frame-support and sp-runtime

xcm-fee-payment-runtime-api has 3 features without comments.