Cargo Features

[dependencies]
pallet-ismp-runtime-api = { version = "1.15.1", default-features = false, features = ["std"] }
default = std

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

std default = serde

Enables std of parity-scale-codec, ismp, pallet-ismp, primitive-types ^0.12.1, sp-api, and sp-mmr-primitives

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

serde std