data-cleaning-brief

data-cleaning-brief is a skill for Claude Code from ur-grue/autopunk-media-skills. It costs 44 tokens per session (1,909 once invoked), scanned A, original, MIT.

A step-by-step guide for fixing inconsistent, incomplete, duplicated, or badly formatted dataset values before analysis or publication.

In plain words
What is it for?
Use it to brief an analyst, document work already completed, or create a checklist for preparing data.
Why use it?
It turns visible data problems into clear instructions and records the decisions made during cleaning.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the autopunk-media-skills plugin — 187 skills shipped together

Good fit Use it to brief an analyst, document work already completed, or create a checklist for preparing data.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ur-grue/autopunk-media-skills/data-cleaning-brief
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 ur-grue/autopunk-media-skills --skill data-cleaning-brief
Clone the repo
git clone --depth 1 https://github.com/ur-grue/autopunk-media-skills

Made for: Claude Code.

Or install autopunk-media-skills, the plugin that ships this one along with the rest of its 187 skills.

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 data-cleaning-brief

README.md
[![agentmods](https://agentmods.dev/badge/skills/ur-grue/autopunk-media-skills/data-cleaning-brief/github.svg)](https://agentmods.dev/skills/ur-grue/autopunk-media-skills/data-cleaning-brief)
Your own site
<a href="https://agentmods.dev/skills/ur-grue/autopunk-media-skills/data-cleaning-brief"><img src="https://agentmods.dev/badge/skills/ur-grue/autopunk-media-skills/data-cleaning-brief/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 data-cleaning-brief

Your own site · 80×15
<a href="https://agentmods.dev/skills/ur-grue/autopunk-media-skills/data-cleaning-brief"><img src="https://agentmods.dev/badge/skills/ur-grue/autopunk-media-skills/data-cleaning-brief.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 44 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,909 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00044 $0.01909
Opus 5 $0.00022 $0.00955
Sonnet 5 $0.00009 $0.00382
Haiku 4.5 $0.00004 $0.00191

Measured 13d ago against content hash 05f6b541087d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

data-cleaning-brief 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 13d 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.

skills/data-journalism/investigation/data-cleaning-brief/SKILL.md · 102 lines

How it starts

The opening of the file, as written. The whole thing — 102 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Data Cleaning Brief

What This Skill Does

Writes clear, step-by-step instructions for cleaning a messy or inconsistent dataset — specifying exactly what needs to be standardised, corrected, or removed to make the data ready for analysis and publication.

When To Use This Skill

  • You have received a dataset that is clearly messy (inconsistent formats, duplicates, blank fields, mixed naming conventions) and need to brief a data analyst or developer on how to clean it
  • You want to document your cleaning decisions for editorial transparency and methodological reproducibility
  • You are cleaning data yourself and want a structured checklist to work through
  • You are handing off a partially cleaned dataset and need to document what has been done and what remains

What You Need To Provide

Required: A description of the dataset and the problems you can see in it — specific examples of inconsistent values, formatting problems, missing data, or structural issues. Column names and a small sample of the messy rows. Optional: The intended analysis goal (what you will do with the data once it is clean); any cleaning decisions that have already been made; the tool the analyst will use (Excel, Python, R, SQL); the deadline.

How the Assistant Approaches This

  1. Identifies each cleaning problem from the description and categorises it: standardisation (format, spelling, case), deduplication, missing value handling, type conversion, or structural issues.
  2. Writes a numbered, sequenced instruction set — earlier steps that change data shape (deduplication, column splitting) before later steps that change values (standardisation, type conversion).
  3. Flags any cleaning decisions that involve editorial judgement — e.g. how to handle ambiguous missing values, or whether to exclude records rather than impute them — and notes that these decisions need journalist sign-off.

Output Format

A structured brief (300–500 words) with two sections: (1) Cleaning checklist — numbered steps in recommended order, each naming the column affected, describing the problem, and specifying the action to take. (2) Decisions requiring editorial sign-off — a separate list of any steps where reasonable people could disagree on the right approach, with the options and recommended default. Plain language throughout; minimal technical jargon, but tool-specific syntax can be included in parentheses where helpful.

Read the full file on GitHub · 102 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. 13d ago First seen · 102 lines · 44 tokens per session scan A 05f6b541087d

Subscribe to this mod's changes

data-cleaning-brief is a skill published in the GitHub repository ur-grue/autopunk-media-skills (32 stars, last pushed 12d ago), licensed MIT. It adds 44 tokens to every session and 1,909 once invoked, about $0.0002 per session on Opus 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 2026-08-30.

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