ccc-data

ccc-data is a skill for Claude Code from KevinZai/commander. It costs 62 tokens per session (1,373 once invoked), scanned A, original, MIT.

A collection of data-work skills for handling datasets such as CSV, JSON, and Parquet files. It covers data pipelines, SQL, charts, machine learning, data quality, analytics, reports, and vector search, which finds related records by meaning.

In plain words
What is it for?
Use it to build ETL or ELT pipelines, improve slow SQL queries, create charts and dashboards, train machine-learning models, validate data, set up analytics, automate reports, or add meaning-based search.
Why use it?
It helps work with large data files without putting the entire dataset into the conversation, which can exceed token limits. It also directs different data requests to the relevant type of workflow.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter; names the AskUserQuestion tool; mentions Codex.

Good fit Use it to build ETL or ELT pipelines, improve slow SQL queries, create charts and dashboards, train machine-learning models, validate data, set up analytics, automate reports, or add meaning-based search.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/kevinzai/commander/ccc-data
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add KevinZai/commander --skill ccc-data
Clone the repo
git clone --depth 1 https://github.com/KevinZai/commander

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for ccc-data

README.md
[![agentmods](https://agentmods.dev/badge/skills/kevinzai/commander/ccc-data/github.svg)](https://agentmods.dev/skills/kevinzai/commander/ccc-data)
Your own site
<a href="https://agentmods.dev/skills/kevinzai/commander/ccc-data"><img src="https://agentmods.dev/badge/skills/kevinzai/commander/ccc-data/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for ccc-data

Your own site · 80×15
<a href="https://agentmods.dev/skills/kevinzai/commander/ccc-data"><img src="https://agentmods.dev/badge/skills/kevinzai/commander/ccc-data.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,373 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00062 $0.01373
Opus 5.5 $0.00025 $0.00549
Sonnet 5.5 $0.00012 $0.00275
Haiku 4.5 $0.00006 $0.00137

Measured 3d ago against content hash c509f8a4163b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ccc-data scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

commander/cowork-plugin-codex/skills/ccc-data/SKILL.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

$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. 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:

ls dbt_project.yml dags airflow.cfg dagster.yaml workspace.yaml requirements.txt pyproject.toml 2>/dev/null
test -f package.json && grep -oE '"(posthog-js|mixpanel-browser|recharts|chart\.js|d3|@tremor/react|@pinecone-database/pinecone|@qdrant/js-client-rest|pg|drizzle-orm|prisma)"' package.json | sort -u
grep -lE 'pgvector|scikit-learn|torch|tensorflow|pandas|polars' requirements.txt pyproject.toml 2>/dev/null

Render one line:

📊 Stack: <tools detected | none detected>

2. Route by intent, or ask

An argument or a clear intent routes straight to the sub-skill in references/routing.md. A request that spans several (an analytics stack, an ML feature) follows the matching campaign in that file, one sub-skill per step.

Otherwise ask with AskUserQuestion (header "Data"), recommended first:

  • 🟢 Build or fix a pipeline — data-pipeline (Airflow, dbt, Dagster, incremental loads)
  • Speed up queries — sql-optimization (plans, indexes, rewrites)
  • Chart or dashboard — data-visualization
  • More — ML, data quality, analytics, reports or vector search (a follow-up picker with the four best matches)

Read the full file on GitHub · 98 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago Changed · +18 lines · +27 tokens per session c509f8a4163b
  2. 1mo ago First seen · 80 lines · 35 tokens per session scan A 7354a46b87af

Subscribe to this mod's changes

ccc-data is a skill published in the GitHub repository KevinZai/commander (6 stars, last pushed yesterday), licensed MIT. It adds 62 tokens to every session and 1,373 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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