playwright-harness SKILL.md skillB
playwright-harness from simiancraft/simiancraft-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add simiancraft/simiancraft-skills/playwright-harness@git:20260714.6105369Pins git:20260714.6105369 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- simiancraft/simiancraft-skills
- Path
skills/playwright-harness/SKILL.md- Versions recorded
- 4
- Latest version
- git:20260714.6105369, committed Jul 14, 2026
- First version recorded
- Jun 14, 2026
- Size
- 11,301 bytes
- Repository stars
- 8
- License
- MIT
Drive a real browser with Playwright on any OS and gate on what you observe: write a script, launch Chromium (headless by default; a shared headed window when a human must watch or drive), drive the page, and assert on screenshots plus collected page errors. The operational trunk for browser work; specializations layer on top. Use for ANY web task: "drive the UI headlessly", "smoke-test a screen", "screenshot a component or canvas", "reproduce a console error", "fill and submit a form…
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
# Playwright Harness
Project-agnostic kernel for driving a browser and asserting on it; the operational
trunk the rest of the suite hangs off.
## Map of the suite
This skill is the trunk: what to install, plus the run-and-assert pattern.
Everything else hangs off it.
```
playwright-harness/ <- you are here: prerequisites + run pattern + assert loop
├── references/
│ ├── interactions.md address elements: locators, actions, waits, assertions
│ └── flows.md recipes: login, forms, responsive, link-checking, network stubbing
├── scripts/
│ ├── keeper.mjs interactive headed mode: long-lived shared browser + CDP
│ └── observe.mjs interactive headed mode: attach, report URL/errors, screenshot
└── specializations (separate, discoverable skills; read this one first):
├── playwright-camera-mask-testing a real person through getUserMedia; assert segmentation/mask by vision
└── playwright-gif-capture an animated GIF of a page, canvas, or WebGL animation
```
`references/` is this skill's own depth, loaded by reading the file. The
…Read the whole file at its exact version.
How to install
mdr add simiancraft/simiancraft-skills/playwright-harness@sha256:2737eb89714233efThe line at the top of this page pins the label git:20260714.6105369, 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_3fxlqotexqmhqnkg)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Jun 14, 2026 and Jul 14, 2026, about one every 10 days. Its first recorded version is graded A and its latest B.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260714.6105369 latest | 2026-07-14 | 6105369 | 11,301 B | B | view · diff |
| git:20260614.3284bd2 | 2026-06-14 | 3284bd2 | 8,786 B | A | view · diff |
| git:20260614.1196744 | 2026-06-14 | 1196744 | 7,623 B | A | view · diff |
| git:20260614.b42db2c | 2026-06-14 | b42db2c | 6,209 B | A | view |
Audit of the latest version
- fail: No link to a raw IP address (matched: http://127.0.0.1:9222)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (11301 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
simiancraft/simiancraft-skills · 8 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3fxlqotexqmhqnkg GET https://markdownregistry.com/api/v1/resolve?ref=simiancraft/simiancraft-skills/playwright-harness GET https://markdownregistry.com/api/v1/blob/2737eb89714233efb8dab9c1bf143919ef0a7cb97ef3b3f2c1cf8303e1e51693
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.