Home / canvascoding / canvas-notebook · GitHub

xlsx SKILL.md skillA

xlsx from canvascoding/canvas-notebook is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add canvascoding/canvas-notebook/xlsx@git:20260908.d687d43

Pins git:20260908.d687d43 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: canvascoding/canvas-notebook
Path: seed_skills/xlsx/SKILL.md
Versions recorded: 2
Latest version: git:20260908.d687d43, committed Sep 8, 2026
First version recorded: Jun 16, 2026
Size: 3,773 bytes
Repository stars: 12
License: a license file GitHub does not identify

Use this Canvas-owned clean-room skill when a spreadsheet file is the primary input or output. Trigger for `.xlsx`, `.xls`, `.xlsm`, `.csv`, `.tsv`, workbooks, templates, trackers, models, dashboards, charts, formulas, data cleaning, formatting, validation, recalculation, and Google Sheets-targeted handoff.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# XLSX Spreadsheets

This skill covers spreadsheet creation, editing, analysis, visualization, and
verification in Canvas Notebook. It is a clean-room Canvas skill; do not copy
vendor skill material, hidden prompts, or proprietary helper code into this
folder.

## Core Contract

- Use `CANVAS_AGENT_TEMP_DIR` for scripts, working copies, recalculation output,
  exports, and render previews. Promote only the requested final workbook to the
  workspace with `copy_path` or `move_path`.
- Preserve existing workbook conventions for targeted edits.
- For new workbooks, design the workbook structure first: summary/dashboard,
  inputs, assumptions, source data, calculations, checks, and outputs as needed.
- Keep formulas auditable and user-editable. Prefer formulas over hardcoded
  derived numbers when the workbook is meant to be reused.
- Avoid hidden scratch state in the final workbook unless the user asks for it.
- Return only the final spreadsheet unless the user asks for intermediate CSV,
  render, or validation files.

## Recommended Tools

- `openpyxl` for XLSX creation, formatting, formulas, charts, validation, and
  structural inspection.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add canvascoding/canvas-notebook/xlsx@sha256:3033339c0639aa51

The line at the top of this page pins the label git:20260908.d687d43, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_ll4a6hrb52cg5qzb.svg)](https://markdownregistry.com/a/art_ll4a6hrb52cg5qzb)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, between Jun 16, 2026 and Sep 8, 2026, about one every 84 days.

version	committed	commit	size	audit
git:20260908.d687d43 latest	2026-09-08	d687d43	3,773 B	A	view · diff
git:20260616.de8c0db	2026-06-16	de8c0db	3,336 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (3773 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

canvascoding/canvas-notebook · 12 stars · license a license file GitHub does not identify · pushed 2026-11-02 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_ll4a6hrb52cg5qzb
GET https://markdownregistry.com/api/v1/resolve?ref=canvascoding/canvas-notebook/xlsx
GET https://markdownregistry.com/api/v1/blob/3033339c0639aa51727781747f9f3c99c6079ad680b3fc44edfe03618fb602fa

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

More from canvascoding/canvas-notebook

opensrc SKILL.md skill

canvascoding/canvas-notebook · .claude/skills/SKILL.md · Fetch dependency source code to give AI agents deeper implementation context. Use when the agent needs to understand…

git:20260415.c9cbc93 · audit A · 12 stars

gitnexus-cli SKILL.md skill

canvascoding/canvas-notebook · .claude/skills/gitnexus/gitnexus-cli/SKILL.md · Use when the user needs to run GitNexus CLI commands like analyze/index a repo, check status, clean the index, generate…