marking-up-pages SKILL.md skillA
marking-up-pages from oaustegard/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add oaustegard/claude-skills/marking-up-pages@v0.2.0Pins v0.2.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- oaustegard/claude-skills
- Path
marking-up-pages/SKILL.md- Versions recorded
- 2
- Latest version
- v0.2.0, committed Oct 20, 2026
- First version recorded
- Oct 20, 2026
- Size
- 7,782 bytes
- Repository stars
- 158
- License
- MIT
Let the user draw on a live web page in Chrome (circle, underline, arrow) and type a note per mark, then read back what each mark points at - element, selector, computed styles, React/Vue/Svelte component and source file - plus console errors and failed requests, and fix it. Uses Claude in Chrome. Use when the user wants to mark up, annotate, scrawl on or point at something on a page, says "let me show you", "look at my marks", "I circled it", or asks for visual feedback on a site or local dev…
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
# Marking up pages
The user draws on the page and notes what is wrong; you get each mark tied to the real DOM element and, on dev builds, its component and source file. The marks are the bug report: read them before answering and don't ask the user to re-describe what they already marked.
Needs the Claude in Chrome tools (`javascript_tool`, `computer`, `tabs_context_mcp`). Load them in one ToolSearch call if they are deferred. The JavaScript tool runs in the page's own world and ignores the page's CSP, which is what makes this work.
## 1. Open the overlay
Use the user's tab (find it with `tabs_context_mcp`). Run the loader first; it is one line and costs nothing:
```js
window.__scrawl ? (__scrawl.show(), __scrawl.status()) : (c => c && JSON.parse(c).version === '0.2.0' ? (0, eval)(JSON.parse(c).src) : 'NO_CACHE')(localStorage.getItem('page-scrawl:src'))
```
If it returns `NO_CACHE`, read `scripts/overlay.js` and pass the whole file as the `text` of `javascript_tool`. The overlay caches itself in that origin's `localStorage`, so after a reload the loader is enough. (Keep the version in the loader equal to `VERSION` in `overlay.js`.)
…Read the whole file at its exact version.
How to install
mdr add oaustegard/claude-skills/marking-up-pages@sha256:7e8e79eade991d7eThe line at the top of this page pins the label v0.2.0, 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_7qrszivhm5ai3gst)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, all committed on Oct 20, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v0.2.0 latest | 2026-10-20 | ab8747e | 7,782 B | A | view · diff |
| v0.1.0 | 2026-10-20 | a47c0cd | 7,196 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 (7782 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
oaustegard/claude-skills · 158 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_7qrszivhm5ai3gst GET https://markdownregistry.com/api/v1/resolve?ref=oaustegard/claude-skills/marking-up-pages GET https://markdownregistry.com/api/v1/blob/7e8e79eade991d7ef6ed077676d778af82d7d2e0efe6ae0ef4e7a6f0e90dfff0
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.