remove-ai-marks SKILL.md skillB
remove-ai-marks from guillaumemeyer/watermarks-remover is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add guillaumemeyer/watermarks-remover/remove-ai-marks@git:20261002.43107e4Pins git:20261002.43107e4 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- guillaumemeyer/watermarks-remover
- Path
skills/remove-ai-marks/SKILL.md- Versions recorded
- 6
- Latest version
- git:20261002.43107e4, committed Oct 2, 2026
- First version recorded
- Aug 23, 2026
- Size
- 19,682 bytes
- Repository stars
- 26,712
- License
- MIT
Remove multi-vendor AI provenance marks: invisible Unicode (Layer A), statistical text watermarks via rewrite (Layer B, always offer), and C2PA/EXIF/XMP/container metadata on PNG/JPEG/WebP/SVG/PDF/DOCX/ODT/HTML/MD/TEX. Covers Claude, Gemini/SynthID-class, OpenAI provenance, and open-LLM sampling marks. Use when the user asks to strip watermarks, remove C2PA/Content Credentials, clean AI metadata, remove invisible Unicode, anti-detect clean AI output, or runs /remove-ai-marks…
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
# Remove AI marks
Multi-vendor anti-detection hygiene for **text** (Unicode + statistical rewrite) and **files** (C2PA / AI metadata across common containers).
Read if needed:
- `references/mark-classes.md` — Unicode / sampling / C2PA / containers
- `references/vendor-notes.md` — Claude, Gemini/SynthID, OpenAI, open-LLM
- `references/removal-matrix.md` — which layer when
- `references/ethics.md` — intended use
- `references/how-claude-marks.md` — Anthropic-specific detail
- `references/markdiffusion.md` — optional MarkDiffusion image harness (schemes, honesty caveats)
This skill is a **thin client**. All deterministic cleaning machinery runs in a
separate HTTP service (this repo's `service/`), so the agent host needs no
Python, venvs, or cleaning tools. Call the service with `curl`; never run
cleaning scripts directly.
## Service access
Base URL comes from `WATERMARKS_SERVICE_URL`, default `http://127.0.0.1:8765`:
```bash
WM="${WATERMARKS_SERVICE_URL:-http://127.0.0.1:8765}"
```
The service is started either by the operator (`docker compose up -d`, or a
published GHCR image) or locally (`make serve`). **Always check it first**, and
…Read the whole file at its exact version.
How to install
mdr add guillaumemeyer/watermarks-remover/remove-ai-marks@sha256:b83e5d953c9cab48The line at the top of this page pins the label git:20261002.43107e4, 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_r4srb6pp3oh3f2x5)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Aug 23, 2026 and Oct 2, 2026, about one every 8 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261002.43107e4 latest | 2026-10-02 | 43107e4 | 19,682 B | B | view · diff |
| git:20260909.e2a699b | 2026-09-09 | e2a699b | 19,113 B | B | view · diff |
| git:20260903.ec3946b | 2026-09-03 | ec3946b | 17,326 B | B | view · diff |
| git:20260828.474be13 | 2026-08-28 | 474be13 | 16,398 B | B | view · diff |
| git:20260828.1638311 | 2026-08-28 | 1638311 | 15,939 B | B | view · diff |
| git:20260823.466aece | 2026-08-23 | 466aece | 15,399 B | B | view |
Audit of the latest version
- fail: No link to a raw IP address (matched: http://127.0.0.1:8765)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (19682 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 script tag
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
guillaumemeyer/watermarks-remover · 26,712 stars · license MIT · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_r4srb6pp3oh3f2x5 GET https://markdownregistry.com/api/v1/resolve?ref=guillaumemeyer/watermarks-remover/remove-ai-marks GET https://markdownregistry.com/api/v1/blob/b83e5d953c9cab48230b3b6969498285403185b8c4feddd757b319a02b5a749c
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.
More from guillaumemeyer/watermarks-remover
Every file in guillaumemeyer/watermarks-remover