setup SKILL.md skillB
setup from feder-cr/invisible_playwright_mcp is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add feder-cr/invisible_playwright_mcp/setup@git:20260923.a602cffPins git:20260923.a602cff in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- feder-cr/invisible_playwright_mcp
- Path
skills/setup/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260923.a602cff, committed Sep 23, 2026
- First version recorded
- Sep 13, 2026
- Size
- 1,234 bytes
- Repository stars
- 885
- License
- MIT
What the invisible_playwright_mcp browser server needs on this machine - the patched Firefox it drives, which the server downloads on its own the first time it runs. Use when browser_open answers that the engine is downloading or that its download failed, or right after installing the plugin.
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
The server runs with `uvx invisible-playwright-mcp` and needs its browser engine on this machine once, about a quarter of a gigabyte. It downloads it on its own when it starts; while that is in flight, `browser_open` answers with how far the download is instead of opening a browser, and asking again a minute later is all that is needed. To do the download ahead of time, or again after it failed, in a terminal where the user can watch it, run the block for the user's system: Windows, in PowerShell: ```powershell powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 | iex" $env:Path = "$env:USERPROFILE\.local\bin;$env:Path" uvx invisible-playwright fetch ``` Linux: ```bash curl -LsSf https://astral.sh/uv/install.sh | sh source $HOME/.local/bin/env uvx invisible-playwright fetch ``` Nothing else to configure: no account, no key. Over MCP the model is the client's own.
Read the whole file at its exact version.
How to install
mdr add feder-cr/invisible_playwright_mcp/setup@sha256:6a232539eb2f00afThe line at the top of this page pins the label git:20260923.a602cff, 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_62agihypecdczm4v)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Sep 13, 2026 and Sep 23, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260923.a602cff latest | 2026-09-23 | a602cff | 1,234 B | B | view · diff |
| git:20260922.3a6b6aa | 2026-09-22 | 3a6b6aa | 1,216 B | B | view · diff |
| git:20260921.9997480 | 2026-09-21 | 9997480 | 1,198 B | B | view · diff |
| git:20260913.5703870 | 2026-09-13 | 5703870 | 797 B | B | view |
Audit of the latest version
- fail: No curl or wget piped into a shell (matched: curl -LsSf https://astral.sh/uv/install.sh | sh)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1234 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 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
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
feder-cr/invisible_playwright_mcp · 885 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_62agihypecdczm4v GET https://markdownregistry.com/api/v1/resolve?ref=feder-cr/invisible_playwright_mcp/setup GET https://markdownregistry.com/api/v1/blob/6a232539eb2f00af1af9ec2752592e7aadb739f0807c871ed6dd94cca89fda98
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.