cargo login


cargo-login - Save an API token from the registry locally


cargo login [OPTIONS] [TOKEN]


This command will save the API token to disk so that commands that require authentication, such as cargo-publish(1), will be automatically authenticated. The token is saved in $CARGO_HOME/credentials. CARGO_HOME defaults to .cargo in your home directory.

If the TOKEN argument is not specified, it will be read from stdin.

The API token for may be retrieved from

Take care to keep the token secret, it should not be shared with anyone else.


Login Options

--registry REGISTRY

Alternative registry to use.

This option is unstable and available only on the nightly channel and requires the -Z unstable-options flag to enable.

Display Options


Use verbose output. May be specified twice for "very verbose" output which includes extra output such as dependency warnings and build script output. May also be specified with the term.verbose config value.


No output printed to stdout.

--color WHEN

Control when colored output is used. Valid values:

  • auto (default): Automatically detect if color support is available on the terminal.

  • always: Always display colors.

  • never: Never display colors.

May also be specified with the term.color config value.

Common Options


Prints help information.


Unstable (nightly-only) flags to Cargo. Run cargo -Z help for details.


See the reference for details on environment variables that Cargo reads.

Exit Status


Cargo succeeded.


Cargo failed to complete.


  1. Save the API token to disk:

    cargo login