verify-watermark-removal SKILL.md skillA
verify-watermark-removal from davepoon/buildwithclaude is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add davepoon/buildwithclaude/verify-watermark-removal@git:20260914.a6c484bPins git:20260914.a6c484b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- davepoon/buildwithclaude
- Path
plugins/all-skills/skills/verify-watermark-removal/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260914.a6c484b, committed Sep 14, 2026
- Size
- 10,260 bytes
- Repository stars
- 3,724
- License
- MIT
Verify that a watermark-removal or "humanizer" step actually removed a statistical text watermark, by measuring a sample whose key the user holds. Use after any tool, script or service claims to have cleaned a text, or when the user asks whether such a tool works, which one to trust, or how to test one. Reports a detector score against fixed thresholds plus what the run cost in meaning, facts, verbatim overlap and length. This skill only measures and never removes a mark.
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
# Verify Watermark Removal A tool says it removed a watermark from a text. This skill checks whether it did, by measuring rather than by trusting the tool's own report. The check works because the mark is planted first, with a key the user holds. A detector that knows the key is the strongest detector that can exist for that text, so its score is a ceiling rather than a guess. What the key buys is a scale of the user's own; what keeps a tool from recognising the sample is something else, namely that a freshly generated private sample is a text nobody has seen before. The samples shipped with the tool are published together with their key, so those can be recognised, and the repository says so in `samples/README.md`. The skill also reports what the rewrite cost the text, because a mark that disappeared together with half the meaning is not a result anyone wants. This skill measures. It never removes a mark, and it never claims anything about a specific vendor's watermark. ## When to Use This Skill - A "watermark remover", "AI humanizer" or "detector bypass" tool claims it cleaned a text, and the claim needs checking before anyone repeats it. …
Read the whole file at its exact version.
How to install
mdr add davepoon/buildwithclaude/verify-watermark-removal@sha256:4d5e20101201c233The line at the top of this page pins the label git:20260914.a6c484b, 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_hg4edg5gvfiaa3cc)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 14, 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 (10260 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
davepoon/buildwithclaude · 3,724 stars · license MIT · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_hg4edg5gvfiaa3cc GET https://markdownregistry.com/api/v1/resolve?ref=davepoon/buildwithclaude/verify-watermark-removal GET https://markdownregistry.com/api/v1/blob/4d5e20101201c2334772ef58d46ad82f6cb7f23593b8542aec90555a027ac6c2
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.