data-cleaning SKILL.md skillA
data-cleaning from ssameer20/data-analyst-toolkit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ssameer20/data-analyst-toolkit/data-cleaning@git:20261103.e47dce4Pins git:20261103.e47dce4 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ssameer20/data-analyst-toolkit
- Path
skills/data-cleaning/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261103.e47dce4, committed Nov 3, 2026
- First version recorded
- Nov 3, 2026
- Size
- 6,546 bytes
- Repository stars
- 2
- License
- MIT
Use when profiling, cleaning, transforming, standardizing, deduplicating, or validating data with Excel, Google Sheets, Oracle SQL, Python/Pandas, Informatica IDMC, or similar tools.
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
# Data Cleaning Data cleaning identifies, corrects, and manages inaccurate, incomplete, duplicated, or inconsistent data so it is reliable, consistent, and suitable for analysis and reporting. Preserve data integrity and avoid unnecessary information loss. ## Core tasks - **Missing values:** Identify null, blank, and placeholder values; choose a treatment based on data type, missingness pattern, and business context. - **Duplicates:** Detect exact duplicate rows and duplicate keys or entities; distinguish genuine repeats from records that should be consolidated. - **Data types:** Correct types for dates, numbers, text, categories, and identifiers without losing meaningful formatting or leading zeros. - **Standardization:** Align date and text formats, units, categories, and naming conventions. - **Inconsistent or invalid values:** Correct spelling or label variations only when the intended value is clear; validate permitted values and business rules. - **Outliers:** Identify unusual values and investigate whether they are errors or valid observations before changing or excluding them. …
Read the whole file at its exact version.
How to install
mdr add ssameer20/data-analyst-toolkit/data-cleaning@sha256:2c48e0376b8d6a2eThe line at the top of this page pins the label git:20261103.e47dce4, 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_tz2d2gg2nh2lalxi)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, all committed on Nov 3, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261103.e47dce4 latest | 2026-11-03 | e47dce4 | 6,546 B | A | view · diff |
| git:20261103.646dff1 | 2026-11-03 | 646dff1 | 2,272 B | A | view · diff |
| git:20261103.1f68b76 | 2026-11-03 | 1f68b76 | 1,780 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 (6546 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
ssameer20/data-analyst-toolkit · 2 stars · license MIT · pushed 2026-11-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_tz2d2gg2nh2lalxi GET https://markdownregistry.com/api/v1/resolve?ref=ssameer20/data-analyst-toolkit/data-cleaning GET https://markdownregistry.com/api/v1/blob/2c48e0376b8d6a2efaa7a3c85f0d7265d75e42c0eb56707f081ebee302d5a524
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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