AgenticScratchA YH Agentic product
connecting DeepSeek recognizer loading Lean unknown
Space to work it out.Write a line. Explore a thought. Take the next step.

Write naturally anywhere. Select a region to bring the agent into the page.

GETTING STARTED

A notebook that thinks with you.

  1. Give it a problem. Add a question or a screenshot to the page.
  2. Write, select, refine. Use your pen or “Type math”. Check the recognition in the source-and-preview editor.
  3. Choose your next move. Continue a calculation, verify reasoning, check a supported statement in Lean, explore ideas, get feedback, or generate a program.
  4. Keep the conversation on the page. Ask follow-up questions in the canvas popup. Review a continuation before placing it.

Try an example in the toolbar. Your current page autosaves locally; “Save file” downloads a copy you can reopen on another device.

Lean checks the displayed formal statement. Supported forms include polynomial integrals, derivatives, identities, limits and finite sums. Generated programs are shown as code; they are not executed.