data-charts SKILL.md skillA
data-charts from phuetz/code-buddy is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add phuetz/code-buddy/data-charts@git:20260705.7cbc9adPins git:20260705.7cbc9ad in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- phuetz/code-buddy
- Path
cowork/.claude/skills/data-charts/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260705.7cbc9ad, committed Jul 5, 2026
- First version recorded
- Jun 17, 2026
- Size
- 3,996 bytes
- Repository stars
- 50
- License
- a license file GitHub does not identify
Analyze tabular data and render charts (bar, line, scatter, pie, histogram) to PNG/SVG with pandas + matplotlib. Use whenever the user wants to plot, chart, graph, or visualize data from a CSV/JSON/Excel file or inline numbers.
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
# Analyze data & render charts with pandas + matplotlib
Turn tabular data (CSV/JSON/Excel/inline) into a real chart image using the
open-source **pandas** + **matplotlib** libraries. Work in **visible steps** and
verify the image was written before reporting.
## Getting the data when it's NOT in a file (e.g. "France GDP over 10 years")
When the user asks to chart something you must look up rather than read from a
file, gather the numbers FIRST with your normal tools — your own knowledge, or a
quick `web_search` — then **hard-code them as inline Python lists**. Do **NOT**
fetch from an external API *inside* the Python script (`urllib`/`requests`):
sandboxed network calls routinely time out (the 30 s command limit), which makes
you give up and fall back to a much worse ASCII/text "chart". Inline numbers →
matplotlib → a real PNG is fast and reliable. Only read from the network when the
user explicitly gives you a data URL and it's known-fast.
## Preflight (extras-tier libs)
These libs are optional and not in the default build. Always check first:
```bash
python3 - <<'PY'
try:
import pandas, matplotlib # noqa: F401
except ModuleNotFoundError as e:
raise SystemExit(
…Read the whole file at its exact version.
How to install
mdr add phuetz/code-buddy/data-charts@sha256:68e142248c8b940cThe line at the top of this page pins the label git:20260705.7cbc9ad, 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.
[](https://markdownregistry.com/a/art_fk4cebtmlsxtqqir)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jun 17, 2026 and Jul 5, 2026, about one every 18 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260705.7cbc9ad latest | 2026-07-05 | 7cbc9ad | 3,996 B | A | view · diff |
| git:20260617.39bd919 | 2026-06-17 | 39bd919 | 3,292 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3996 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
phuetz/code-buddy · 50 stars · license a license file GitHub does not identify · pushed 2026-10-12 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_fk4cebtmlsxtqqir GET https://markdownregistry.com/api/v1/resolve?ref=phuetz/code-buddy/data-charts GET https://markdownregistry.com/api/v1/blob/68e142248c8b940c44fb4f9998a6f6984873c97d2bc16a8956bcdbba5fd46d44
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.