Install the CLI
Install the Keycard CLI on macOS and Linux.
Install CLI
Section titled “Install CLI”brew install keycardai/tap/keycardVerify the installation:
keycard versionInstall Plugin
Section titled “Install Plugin”claude plugin marketplace add keycardai/pluginsclaude plugin install keycard-cli@keycardaiSupported Platforms
Section titled “Supported Platforms”The Keycard CLI supports macOS and Linux on both amd64 and arm64 architectures.
Update
Section titled “Update”Update to the latest version with Homebrew:
brew upgrade keycard