A reactive notebook for Python — run reproducible experiments, query with SQL, execute as a script, deploy as an app, and version with git. Stored as pure Python. All in a modern, AI-native editor.
marimo is a reactive Python notebook in which changing a cell or interface control automatically updates dependent code, keeping code and outputs consistent. It is used for reproducible data work, SQL queries, experiments, scripts, interactive applications, and deployable web apps. The catalogue contains instructions and skills for working with marimo.
Latest release 0.25.2 · 19 Oct 2026
3 files for GitHub Copilot, Codex, OpenCode and Claude Code: marimo copilot-instructions.md, marimo AGENTS.md, marimo CLAUDE.md — 731 tokens loaded in every session.
.github/copilot-instructions.md A 91 tok AGENTS.md A 635 tok CLAUDE.md A 5 tok These files are marimo-team/marimo's own configuration — they tell GitHub Copilot, Codex, OpenCode and Claude Code how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.