QuickstartCopy Anchor Link

PrerequisitesCopy Anchor Link

• Node.js 22+ (or Bun)
• npm, pnpm, or Bun

InstallCopy Anchor Link

npm install @blkc-code/cli

Create a BlockCopy Anchor Link

npx @blkc-code/cli new block hero

This creates a working manifest, an example, and a test that passes.

CheckCopy Anchor Link

npx @blkc-code/cli check

Each error prints a BLKC-E* code, the field, the fix, and a link to /docs/errors/<code>.

PreviewCopy Anchor Link

npx @blkc-code/cli dev

Try itCopy Anchor Link

Edit the Block JSON and watch the preview update:

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