marimo-inspect

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

1. Locate the __marimo__ or .marimo/ directory using Glob
2. List available HTML snapshots
3. Read the HTML file with the Read tool
4. Parse and analyze:
   • Cell outputs (text, tables, plots)
   • Error states and messages
   • Console output
5. 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