browser-extension-developer SKILL.md skillA
browser-extension-developer from yamadashy/repomix is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add yamadashy/repomix/browser-extension-developer@git:20260123.6390e9cPins git:20260123.6390e9c in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- yamadashy/repomix
- Path
browser/.claude/skills/browser-extension-developer/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260123.6390e9c, committed Jan 23, 2026
- Size
- 1,176 bytes
- Repository stars
- 29,174
- License
- MIT
Use this skill when developing or maintaining browser extension code in the `browser/` directory, including Chrome/Firefox/Edge compatibility, content scripts, background scripts, or i18n updates.
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 Extension Developer Cross-browser extension (Chrome/Firefox/Edge) using **WXT framework** with Manifest V3. Injects "Repomix" button into GitHub repository pages. ## Structure ```plaintext browser/ ├── entrypoints/ # background.ts, content.ts ├── public/_locales/ # i18n (12 languages) ├── wxt.config.ts # WXT configuration └── .output/ # Built files (chrome-mv3, firefox-mv2) ``` ## Commands - `npm run dev` - Development mode (Chrome default) - `npm run dev:firefox` - Firefox dev mode - `npm run build-all` - Build all browsers - `npm run lint` / `npm run test` ## i18n 12 languages: en, ja, de, fr, es, pt_BR, id, vi, ko, zh_CN, zh_TW, hi New language: Create `public/_locales/[code]/messages.json` with keys: appDescription, openWithRepomix ## Notes - Chrome/Edge use `chrome.*` APIs, Firefox may need polyfills - Run lint and tests before completion
Read the whole file at its exact version.
How to install
mdr add yamadashy/repomix/browser-extension-developer@sha256:321c1470b387d034The line at the top of this page pins the label git:20260123.6390e9c, 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_g6e5mjzfp4t4zmyo)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Jan 23, 2026.
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 (1176 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
yamadashy/repomix · 29,174 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_g6e5mjzfp4t4zmyo GET https://markdownregistry.com/api/v1/resolve?ref=yamadashy/repomix/browser-extension-developer GET https://markdownregistry.com/api/v1/blob/321c1470b387d03492ee03c2af1dbe8a04726067ee3b0a1bb85411d28a201856
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.