# jupyter-to-marimo

Guides coding agents to convert Jupyter .ipynb notebooks into marimo .py files and adapt their structure to a reactive dependency graph.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 3400 installs · ★ 175
- Author: marimo-team
- License: Apache-2.0 · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/marimo-team/skills/tree/HEAD/skills/jupyter-to-marimo/SKILL.md
- Updated: 2026-08-19
- HTML: https://affpapa.org/en/nevibecode/skills/jupyter-to-marimo

## What it does

The skill establishes a strict migration workflow from Jupyter to marimo. The agent runs `uvx marimo convert <notebook.ipynb> -o <notebook.py>` before inspecting the source notebook, treating the generated code as a first draft. It reads the raw `.ipynb` file only if conversion fails.

In marimo, variable references dictate execution order rather than visual cell placement. Because of this, the skill instructs the agent to audit PEP 723 metadata, remove stale package installation cells, and put rendered values in the final expression of each cell. Heavy operations are gated with `mo.stop()`.

Without `uvx` installed in the environment, the CLI converter cannot run. The agent validates all edits by executing `uvx marimo check <notebook.py>`.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add marimo-team/skills --skill jupyter-to-marimo -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/jupyter-to-marimo/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/jupyter-to-marimo/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add marimo-team/skills --skill jupyter-to-marimo -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/jupyter-to-marimo/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add marimo-team/skills --skill jupyter-to-marimo -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/jupyter-to-marimo/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install marimo-team/skills jupyter-to-marimo
```

2. **Manually: put the files in place**
- File: `.github/skills/jupyter-to-marimo/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add marimo-team/skills --skill jupyter-to-marimo -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/marimo-team/skills --path skills/jupyter-to-marimo
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/jupyter-to-marimo/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add marimo-team/skills --skill jupyter-to-marimo -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/marimo-team/skills/tree/HEAD/skills/jupyter-to-marimo/SKILL.md

## When to use it
- convert a Jupyter .ipynb notebook into a marimo .py file
- reorganize cells to match marimo variable dependency graph
- clean up residual package install commands and unnecessary display() calls
- gate expensive cell executions using mo.stop()
- validate dependencies in PEP 723 inline script metadata

## Example prompts
- Convert eda.ipynb into a marimo notebook and review the dependency order
- Migrate training.ipynb to marimo using --sandbox for PEP 723 metadata
- Clean up redundant display calls in dashboard.py and run marimo check

## Source text · SKILL.md · Apache-2.0

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: e6f6403e89e339fc.

BEGIN THIRD-PARTY FILE e6f6403e89e339fc
````text
---
name: jupyter-to-marimo
description: Convert a Jupyter notebook (.ipynb) to a marimo notebook (.py).
---

# Converting Jupyter Notebooks to Marimo

## Convert first

**Important:** Run the converter before you read the source notebook:

```bash
uvx marimo convert <notebook.ipynb> -o <notebook.py>
```

Read the `.ipynb` file only if conversion fails or the generated file omits required information. Treat the generated file as a first draft.

Run this command after conversion and after substantial edits:

```bash
uvx marimo check <notebook.py>
```

## Review the conversion

- Verify all required packages in the PEP 723 metadata. The converter can miss some package-installation forms.
- Remove residual installation cells and stale installation prose. Add version constraints only when required.
- Use `--sandbox` when a notebook uses PEP 723 metadata.
- Preserve the purpose and intended workflow of the source notebook.
- Arrange cells for presentation. marimo determines execution order from variable definitions and references.
- A cell can appear before a cell that defines its input.
- Merge or split cells when the current boundaries reduce clarity.
- Remove redundant Jupyter artifacts, such as unnecessary `display()` calls.
- Review converted magic commands. Keep valid conversions, and resolve comments that report unsupported magics.
- Put the value to render in the final expression of each cell.
- Keep added UI and helper functions proportional to the notebook purpose.
- Replace interactive input methods that wait for terminal input or do not work in the target interface. Use suitable UI controls, script parameters, or environment values.
- Do not print, log, or save secrets. Consider [EnvConfig](https://koaning.github.io/wigglystuff/reference/env-config.md) for multiple environment values.
- Identify expensive work and external side effects. If work must wait, gate it with `mo.stop()` and a suitable UI element.
- Use a form if the user must submit multiple values together.
- Define downstream values after the gate so the dependency graph defers dependent cells.
- Present useful results with simple native components. Add live refresh only when the intended workflow requires it.
- For ipywidgets, read [`references/widgets.md`](references/widgets.md).
- For LaTeX and MathJax, read [`references/latex.md`](references/latex.md).

## Validate the result

- **Run `marimo check` again** after all edits.
- Run the notebook in each intended mode. Confirm that it has the intended behavior.
- When practical, open the source and converted notebooks side by side and invite the user to review.
- Compare content, controls, outputs, and workflow. Cell order and layout can differ.
- Inspect changed files for secrets, generated data, caches, logs, and other runtime files.
````
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© marimo-team · Apache-2.0 · https://github.com/marimo-team/skills/tree/HEAD/skills/jupyter-to-marimo/SKILL.md

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