list-cleaning SKILL.md skillA
list-cleaning from prosyo-ai/gtm-skill is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add prosyo-ai/gtm-skill/list-cleaning@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- prosyo-ai/gtm-skill
- Path
plugin/skills/list-cleaning/SKILL.md- Versions recorded
- 1
- Latest version
- v1.0.0, committed Oct 23, 2026
- Size
- 4,054 bytes
- Repository stars
- 13
- License
- MIT
Use this skill when a prospect or contact list needs cleaning before outreach or import: "clean this CSV", "dedupe my leads", "fix the names and titles", "why are my bounces high". Normalises names, titles, companies and domains, removes duplicates, invalid and risky emails, role addresses, customers and opt-outs, flags stale contacts, and outputs a send-ready list with a cleaning report. Protects sender reputation and stops embarrassing merge-field mistakes.
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
Use this before any list touches a sequence or a CRM import. It produces a clean list and a report of exactly what was removed or changed and why. ## Inputs - The raw list. - Suppression sources: customers, open opportunities, opt-outs, do-not-contact, recent contacts. - The campaign it is for, so you know which columns must be filled. ## The play ### 1. Profile the file Count rows, columns, blanks per column, and obvious junk (test rows, header repeats, rows with only an email). Note the encoding problems: broken accents in names are common and visible in a first line. ### 2. Normalise - **Names**: proper case, strip titles and suffixes (Dr., PhD, MBA), split full names, fix all-caps. Keep particles like "van", "de", "Mc" correct. - **Companies**: strip legal suffixes for display (Inc., Ltd, GmbH, LLC) while keeping the original in another column. "Acme Holdings Inc." becomes "Acme" in an email. - **Titles**: keep the original, add a normalised seniority and function column. - **Domains**: lower case, strip www and paths, derive from email when missing. …
Read the whole file at its exact version.
How to install
mdr add prosyo-ai/gtm-skill/list-cleaning@sha256:5fd1295dfb4a4a20The line at the top of this page pins the label v1.0.0, 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_cwbsefxakh2xqh4b)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 23, 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 (4054 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
prosyo-ai/gtm-skill · 13 stars · license MIT · pushed 2026-10-26 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_cwbsefxakh2xqh4b GET https://markdownregistry.com/api/v1/resolve?ref=prosyo-ai/gtm-skill/list-cleaning GET https://markdownregistry.com/api/v1/blob/5fd1295dfb4a4a20f2c003224775ffe67d2143c3887c0460f323b0263733e79e
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.