browser-profile SKILL.md skillA
browser-profile from vanducng/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add vanducng/skills/browser-profile@v0.1.0Pins v0.1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- vanducng/skills
- Path
skills/browser-profile/SKILL.md- Versions recorded
- 5
- Latest version
- v0.1.0, committed Sep 11, 2026
- First version recorded
- Jul 10, 2026
- Size
- 8,586 bytes
- Repository stars
- 8
- License
- MIT
Manage named persistent browser profiles (cookies, localStorage, IndexedDB, cache) that both you and Claude can use against the SAME Chrome window without collisions. Each profile lives in its own `--user-data-dir` and exposes a deterministic `--remote-debugging-port`. Use when the user says "open profile X", "attach to profile X", "log me into staging once and reuse it", or asks to test frontend flows with persistent auth across runs. Pairs with the `agent-browser` CLI…
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
# browser-profile A thin profile registry on top of Chrome's `--user-data-dir` + `--remote-debugging-port`. Solves three problems at once: 1. **Persistent state per logical user.** Cookies, localStorage, IndexedDB, disk cache survive across runs. 2. **Manual access.** You open the profile in real Chrome and log in / poke around without Claude involved. 3. **Programmatic access on the same window.** Claude attaches via CDP using `agent-browser connect <port>` - no separate Chromium spawn, no SingletonLock collision. Why not Playwright `launchPersistentContext`? Because that path requires Playwright to own the browser lifecycle - you can't have a normal Chrome window on the same `user-data-dir` simultaneously. The CDP-attach pattern here lets both of you share one window; connect-over-CDP is exactly how agent-browser participates in it. That's also why agent-browser must attach in `connect` mode, never `--profile` mode: profile mode launches its own Playwright-owned browser, which breaks the shared window this skill exists to provide. ## When to use - Frontend tests where re-running the login flow on every iteration is wasteful or impossible (MFA, SSO). …
Read the whole file at its exact version.
How to install
mdr add vanducng/skills/browser-profile@sha256:86acdb3642a01048The line at the top of this page pins the label v0.1.0, 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_st6jt2k663tubhvt)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jul 10, 2026 and Sep 11, 2026, about one every 16 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v0.1.0 latest | 2026-09-11 | 9e58ef3 | 8,586 B | A | view · diff |
| v0.1.0 | 2026-08-19 | 204f73f | 7,781 B | A | view · diff |
| v0.1.0 | 2026-08-16 | c83d21b | 7,783 B | A | view · diff |
| git:20260724.51405ee | 2026-07-24 | 51405ee | 7,735 B | A | view · diff |
| git:20260710.6f1e7cf | 2026-07-10 | 6f1e7cf | 7,279 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 (8586 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
vanducng/skills · 8 stars · license MIT · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_st6jt2k663tubhvt GET https://markdownregistry.com/api/v1/resolve?ref=vanducng/skills/browser-profile GET https://markdownregistry.com/api/v1/blob/86acdb3642a01048571decc752ea7a57e36bb15c3d50567c85fd4dec023f43c7
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.