> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/harness-platform/3.0/harness-cli/cli.md).

# CLI

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[Overview](/harness-platform/3.0/harness-cli/cli/overview.md)
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[Install and Upgrade](/harness-platform/3.0/harness-cli/cli/install-and-upgrade.md)
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[Authenticate the Harness CLI](/harness-platform/3.0/harness-cli/cli/authenticate-the-harness-cli.md)
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[Supported resources and actions](/harness-platform/3.0/harness-cli/cli/supported-resources-and-actions.md)
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[Global flags and output formats](/harness-platform/3.0/harness-cli/cli/global-flags-and-output-formats.md)
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[Harness CLI Commands](/harness-platform/3.0/harness-cli/cli/harness-cli-commands.md)
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[Troubleshooting](/harness-platform/3.0/harness-cli/cli/troubleshooting.md)
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