ccc-data SKILL.md skillA

ccc-data from kevinzai/commander is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add kevinzai/commander/ccc-data@git:20261013.fbe187d

Pins git:20261013.fbe187d in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: kevinzai/commander
Path: commander/cowork-plugin-codex/skills/ccc-data/SKILL.md
Versions recorded: 5
Latest version: git:20261013.fbe187d, committed Oct 13, 2026
First version recorded: Jul 1, 2026
Size: 5,626 bytes
Repository stars: 6
License: MIT

Route data work to the right method: ETL/ELT pipelines, SQL optimization, charts and dashboards, machine learning, data quality, product analytics, scheduled reports, or vector search. Use when the user is building, querying, validating or visualizing data, or types $ccc-data.

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

# $ccc-data — data work, routed

**CC Commander** · $ccc-data · the right data method for the job, applied to your stack.

Data sub-skills (`data-pipeline`, `sql-optimization`, `data-visualization`, `machine-learning`, `data-quality`, `analytics-setup`, `reporting`, `vector-search`) ship with the Commander CLI toolkit. Invoke one with the Skill tool when it is listed in this session; otherwise apply the focus in [references/routing.md](references/routing.md). The user's selected model is preserved.

Codex: ask pickers as plain-text questions; write dashboards to a local HTML file instead of publishing.

## When to use / when not to

- Use for pipelines, warehouse and query work, dashboards, ML models, data validation, analytics instrumentation, recurring reports and embeddings.
- Use `$ccc-research` (`data-ingestion`) to summarize a large document, `$ccc-saas` (`database-designer`) to design an application schema, `$ccc-smb-ops` for owner-level cash and expense numbers.

## What happens

### 1. Detect the stack

Run in one Bash call, silent on failure:

```bash
ls dbt_project.yml dags airflow.cfg dagster.yaml workspace.yaml requirements.txt pyproject.toml 2>/dev/null
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add kevinzai/commander/ccc-data@sha256:c509f8a4163b1519

The line at the top of this page pins the label git:20261013.fbe187d, 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_mbot6j3bamignvqo.svg)](https://markdownregistry.com/a/art_mbot6j3bamignvqo)

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

Versions

The registry has recorded 5 versions of this file, between Jul 1, 2026 and Oct 13, 2026, about one every 26 days.

version	committed	commit	size	audit
git:20261013.fbe187d latest	2026-10-13	fbe187d	5,626 B	A	view · diff
git:20260801.0de5ac7	2026-08-01	0de5ac7	3,484 B	A	view · diff
git:20260722.9d3ab82	2026-07-22	9d3ab82	3,218 B	A	view · diff
git:20260707.947ab2f	2026-07-07	947ab2f	3,218 B	A	view · diff
git:20260701.1f4accc	2026-07-01	1f4accc	3,049 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 (5626 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

kevinzai/commander · 6 stars · license MIT · pushed 2026-11-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_mbot6j3bamignvqo
GET https://markdownregistry.com/api/v1/resolve?ref=kevinzai/commander/ccc-data
GET https://markdownregistry.com/api/v1/blob/c509f8a4163b1519f2df7bb7db9263e5fff429f27188d29c5f7c975a1ad10983

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.

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