clean-csv SKILL.md skillA
clean-csv from sigilagent/sigil is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add sigilagent/sigil/clean-csv@git:20260726.9d44567Pins git:20260726.9d44567 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- sigilagent/sigil
- Path
examples/csv-clean/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260726.9d44567, committed Jul 26, 2026
- Size
- 2,105 bytes
- Repository stars
- 19
- License
- MIT
Use when a messy CSV file needs its headers normalized to clean snake_case names and blank rows removed, saved to a verified output file.
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
# Clean a messy CSV Normalize a messy CSV export into a clean one: readable snake_case headers, no blank rows, written to disk and verified. A realistic skill — one genuine judgment call, ordered mechanical steps, a required output file, and a verification gate. ## Steps 1. Read the input CSV file named in the task. 2. Rename every column header to a clean, readable `snake_case` identifier. Real exports carry units, punctuation, vendor prefixes and parenthetical qualifiers that a literal character substitution mangles — decide what each column actually *means* and name it that. For example: | messy header | good name | a literal transform gives | |---|---|---| | `Cust. E-mail (primary)` | `customer_email` | `cust__e_mail__primary_` | | `Total Spend ($)` | `total_spend` | `total_spend____` | | `Signup Date (UTC)` | `signup_date` | `signup_date__utc_` | | `First Name` | `first_name` | `first__name` | 3. Drop any row where every field is empty. 4. Write the cleaned rows to `cleaned.csv` in the working directory, header row first. 5. Verify the result before reporting success. ## Rules …
Read the whole file at its exact version.
How to install
mdr add sigilagent/sigil/clean-csv@sha256:5a6e3950ea0fcf33The line at the top of this page pins the label git:20260726.9d44567, 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_dkepjdrvtazgcq6m)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jul 26, 2026.
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 (2105 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
sigilagent/sigil · 19 stars · license MIT · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_dkepjdrvtazgcq6m GET https://markdownregistry.com/api/v1/resolve?ref=sigilagent/sigil/clean-csv GET https://markdownregistry.com/api/v1/blob/5a6e3950ea0fcf337ee406b6de174789e685143eb1883636706289e26d03e9c1
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.