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What Is Castaly

Castaly is a spec-driven AI platform that turns ideas into working products. Instead of jumping straight to code, it shows you what it understands before it builds, so you can review the plan before anything changes.

Every project follows the same workflow: you describe what you want, Castaly captures it as a Spec, visualizes it as a Graph, and only writes code after you press Build.

You see the understanding

Castaly first interprets your request and shows what it understood. The Graph lets you inspect the pages and features before any code is generated.

The Spec is the source of truth

Your intent is captured as a Markdown Spec. Every build reads from this Spec, ensuring the implementation stays aligned with your requirements.

You stay in control

Nothing changes automatically. Castaly proposes a plan, and code is generated only after you review it and press Build.

  1. Start with context

    Start with a prompt, screenshots, documents, or other references. Castaly creates a Project and begins understanding your intent.

  2. Verify the structure

    When needed, Castaly asks clarifying questions, generates the Spec, and updates the Graph so you can verify the product structure.

  3. Approve the build

    Once everything looks right, press Build. Castaly validates the Spec, prepares a Build Plan, and starts coding only after your approval.

  4. Preview and publish

    Test your running preview, iterate if needed, and publish a stable Project Version when you’re ready.

Everything starts from Chat, where you describe ideas and guide the project. Alongside the conversation, Castaly provides three complementary views:

  • Graph — the product structure and relationships.
  • Spec — the read-only source of truth for the project.
  • Preview — the running application you can test at any time.

Next: Quickstart walks you from a blank Home to your first preview.