firzus/agent-skills · skills/web/web-extension/SKILL.md

web-extension skillA

web-extension is agent-read markdown (skill) from firzus/agent-skills: Design, build, port, debug, test, or prepare browser extensions for Chromium, Firefox, and Safari using the WebExtensions model. Use when work involves manifest.json, Manifest V3, extension service workers or background scripts, content scripts, extension messaging, browser permissions, toolbar actions, options pages, sidebars, cross-browser extension compatibility, store-ready packages, Chrome Web Store, Firefox Add-ons, or Safari Web Extensions. Also use when migrating an existing extension be.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add firzus/agent-skills/web-extension@git:20260728.2a6f6dc
Exact content
mdr add firzus/agent-skills/web-extension@sha256:256e54659cab1246

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_b7t5jvha7d7sdzxd.svg)](https://markdownregistry.com/a/art_b7t5jvha7d7sdzxd)

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Versions

versioncommittedcommitsizeaudit
git:20260728.2a6f6dc latest2026-07-28 2a6f6dc 5,582 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (5582 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

GitHub

firzus/agent-skills · 3 stars · license MIT · pushed 2026-09-18 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_b7t5jvha7d7sdzxd
GET https://markdownregistry.com/api/v1/resolve?ref=firzus/agent-skills/web-extension
GET https://markdownregistry.com/api/v1/blob/256e54659cab1246c42e4ba1390338a108276ab14641f19b53c2cdcd53159bb6

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.