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Converting Jupyter Notebooks to Marimo · minicoohei | DecimalAI

documentationby minicoohei

Converting Jupyter Notebooks to Marimo

minicoohei/jupyter-to-marimo

Source minicoohei/ai-agent-camp ↗License Not recorded

Jupyter ノートブック (.ipynb) を marimo ノートブック (.py) に変換するスキル。「Jupyterを変換して」「ipynbをmarimoに」「ノートブック変換」等のリクエストで発動。

SkillScore91Maintained

Automatic

Coding pack

Last verified 8/21/2026

What it changes

Passed 19 of 21 test cases with the skill, and 14 of 21 without it.

Without skill68%

With skill91%

Checks it passed that the model alone missed

Runs 'uvx marimo check dashboard.py' to validate the script structure.
References 'koaning.github.io/wigglystuff' for EnvConfig documentation.
Verifies that required packages are listed in the script metadata header.

and 3 more in the full report

5 fixed15 passed either way2 still failing0 broke

Pass-rate lift: +23 pp
Tokens: -19%
Agent turns: 0%
Response time: -47%

Model gemini-3.6-flashMeasured 8/21/2026v120 of 22 cases passed with skill · 21 comparable

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/minicoohei-jupyter-to-marimo/SKILL.md https://app.decimal.ai/s/minicoohei-jupyter-to-marimo/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add minicoohei-jupyter-to-marimo, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/minicoohei-jupyter-to-marimo/ and pins it in .decimal/skills.lock

decimalai skills add minicoohei-jupyter-to-marimo

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/minicoohei-jupyter-to-marimo/SKILL.md https://app.decimal.ai/s/minicoohei-jupyter-to-marimo/SKILL.md

Raw file: /s/minicoohei-jupyter-to-marimo/SKILL.md ↗ · machine-readable summary at /s/minicoohei-jupyter-to-marimo.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 5

Prompt

When replacing interactive `os.environ` prompts with `EnvConfig` in a converted marimo script, what is the official documentation site or URL referenced for wigglystuff?

What was checked, without and with the skill
Checked	Without skill	With skill
References 'koaning.github.io/wigglystuff' for EnvConfig documentation.	Missed	Passed

case-17 · gemini-3.6-flash · 8/21/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md38 linessingle file

トリガーワード

「Jupyter変換」「ipynb変換」「marimoに変換」「ノートブック変換」

Converting Jupyter Notebooks to Marimo

IMPORTANT: When asked to translate a notebook, ALWAYS run uvx marimo convert <notebook.ipynb> -o <notebook.py> FIRST before reading any files. This saves precious tokens - reading large notebooks can consume 30k+ tokens, while the converted .py file is much smaller and easier to work with.

Steps

Convert using the CLI

Run the marimo convert command via uvx so no install is needed:

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

This generates a marimo-compatible .py file from the Jupyter notebook.

Run marimo check on the output

uvx marimo check <notebook.py>

Fix any issues that are reported before continuing.

Review and clean up the converted notebook

Read the generated .py file and apply the following improvements:

Ensure the script metadata block lists all required packages. The converter may miss some.
Drop leftover Jupyter artifacts like display() calls, or %magic commands that don't apply in marimo.
Make sure the final expression of each cell is the value to render. Indented or conditional expressions won't display.
If the original notebook requires environment variables via an input, consider adding the EnvConfig widget from wigglystuff. Details can be found here.
If the original notebook uses ipywidgets, replace them with corresponding ui from marimo. A slider, for example, would be replaced with mo.ui.slider().

Run marimo check again after your edits to confirm nothing was broken.

Track record

Benchmark

19 / 21

test cases passed, vs 14 / 21 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

minicoohei / ai-agent-camp

skills/jupyter-to-marimo/SKILL.md

View on GitHub ↗

Imported 8/3/2026Version v1

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

トリガーワード

Converting Jupyter Notebooks to Marimo

Steps

Track record

Benchmark

Adoption

SkillSafety

Source

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