Get a License

License Key

A license key is required to use the MastraKit CLI. The key grants access to download the project template and scaffold new projects.

Purchase

Visit mastrakit.dev to purchase a license.

After purchase, you'll receive a license key in the format:

sk_live_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Keep this key safe — it's shown only once at creation.

Usage Limits

• Each key has a scaffold limit (varies by plan)
• Rate limit: 10 scaffolds per hour
• Keys can be revoked if misused

Support

If you have questions about your license or need help, contact support@mastrakit.dev.

Using Your License Key

Pass your key to the CLI in one of two ways:

Option 1: Inline Flag

npx mastrakit my-project --key sk_live_your_key_here

Option 2: Environment Variable

export MASTRAKIT_LICENSE_KEY=sk_live_your_key_here
npx mastrakit my-project

Setting the environment variable is recommended if you scaffold multiple projects — add it to your shell profile (~/.zshrc or ~/.bashrc) so you don't need to pass it every time.

What Happens During Validation

When you run npx mastrakit:

1. The CLI sends your key to the license API for validation
2. On success, a time-limited download token is issued (5-minute expiry)
3. The project template is downloaded and cached locally at ~/.mastrakit/templates/
4. Subsequent scaffolds reuse the cached template if the version hasn't changed

The raw key is never stored — only a hash is sent for verification.