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Copper ships with a CLI that scaffolds projects, generates code, runs database migrations, and rebuilds your application as you work.

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Installing the Copper CLI

Before creating your first Copper application, make sure your local machine has Go 1.24 or newer installed. You may then install the CLI via go install:
You can verify the installation by running the copper command:

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Troubleshooting

If your shell can’t find copper, your Go bin directory is not on your PATH. You may add it to your shell profile (~/.zshrc or ~/.bashrc):
After restarting your shell, copper -h should work as expected.

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Database

New projects use Postgres, the P in the GRIP stack, so you should have a server running locally before creating one. If you have Docker installed, a single command starts a database that matches the scaffolded development config out of the box:
If you would prefer zero setup, you may pass -storage sqlite3 to copper create, or -storage none if you don’t need a database at all.