Have Claude paint the Mona Lisa in JS Paint

One prompt: find the Mona Lisa, then replicate it with mouse movements and brushes in JS Paint in Chrome. 20 minutes.

by Kiana Ehsani23 Sep 2026

Prompt for your agent

Goal: Test browser computer use on a creative task.
Setup: agents used in source: Claude; tools/MCPs stated: JS Paint, Chrome.
Steps:
1. Prompt: “search for the picture of Mona Lisa, then replicate it using mouse movement and brushes in JS Paint using Chrome.”
2. Let it draw (~20 minutes).
Rules: ask me before anything irreversible (sending, posting, paying, deleting); don’t invent data, results or tools I haven’t given you; tell me what you couldn’t verify.
Based on: Kiana Ehsani — https://x.com/ehsanik/status/2102885216692162993

Steps are from the source. Includes a “Based on” credit line.

I tried this

Tell the next builder. One anonymous answer each; click again to undo.

Agents, models and tools only what the source states

Agents
Claude
Models
Opus 5.5
Tools
  • JS Paint
  • Chrome

Sources & credit