Cargo Features

[dependencies]
twelve_data = { version = "0.3.0", default-features = false, features = ["reqwest-client", "surf-client"] }
default = reqwest-client

The reqwest-client feature is set by default whenever twelve_data is added without default-features = false somewhere in the dependency tree.

reqwest-client default = reqwest
surf-client = surf

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.

reqwest reqwest-client
surf surf-client?