marimo-inspect

This skill should be used when inspecting marimo notebook execution results. Triggers include: - Checking notebook output - Viewing execution results - Reading __marimo__ HTML snapshots - Debugging notebook errors - Verifying cell outputs

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Install this agent skill to your Project

npx add-skill https://github.com/dakesan/marimo-cc/tree/main/skills/marimo-inspect

SKILL.md

Marimo Notebook Inspector

Inspect marimo notebook execution results by reading HTML snapshots stored in the __marimo__ directory.

Purpose

Marimo automatically saves HTML snapshots during editing sessions. This skill reads those snapshots to verify:

Cell execution outputs
Error messages and tracebacks
Visualization renders
UI element states

Snapshot Location

HTML snapshots are stored in:

__marimo__/ directory (relative to notebook)
.marimo/ directory (alternative location)

Workflow

Locate the __marimo__ or .marimo/ directory using Glob
List available HTML snapshots
Read the HTML file with the Read tool
Parse and analyze:
- Cell outputs (text, tables, plots)
- Error states and messages
- Console output
Report findings to user

Usage Pattern

# Find snapshots
Glob: **/__marimo__/*.html

# Read snapshot
Read: __marimo__/notebook_name.html

Analysis Focus

When inspecting HTML snapshots:

Look for <div class="output"> sections for cell outputs
Check for error indicators and stack traces
Identify visualization elements (plots, charts)
Note any warning or info messages