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userscript-dev

Userscript development workflow (Tampermonkey/Violentmonkey/Greasemonkey `.user.js` files with `// ==UserScript==` metadata blocks).

Skill by adrian-cancio

IndexedLicense unknown
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Install

Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/adrian-cancio-userscript-dev

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Userscript development workflow (Tampermonkey/Violentmonkey/Greasemonkey `.user.js` files with `// ==UserScript==` metadata blocks). Use ONLY when writing, modifying, or testing a browser userscript from scratch or against an existing `.user.js` file, or when the user mentions Tampermonkey, Violentmonkey, Greasemonkey, `@match`, `@grant`, `unsafeWindow`, or GM_* APIs. Do NOT use for regular web app development (SPA, backend, full site) — see the general browser-verification workflow for that.

Use cases: frontend, backend, testing, writing

Reviews

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Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/userscript-dev

What's inside

Skill name
userscript-dev
Description
Userscript development workflow (Tampermonkey/Violentmonkey/Greasemonkey `.user.js` files with `// ==UserScript==` metadata blocks). Use ONLY when writing, modifying, or testing a browser userscript from scratch or against an existing `.user.js` file, or when the user mentions Tampermonkey, Violentmonkey, Greasemonkey, `@match`, `@grant`, `unsafeWindow`, or GM_* APIs. Do NOT use for regular web app development (SPA, backend, full site) — see the general browser-verification workflow for that.
License
unknown
Instructions
105 lines in SKILL.md · view on GitHub

Files (1)

  • SKILL.md

The license isn't open source, so the instructions aren't shown here. Read SKILL.md on GitHub

More from adrian-cancio/opencode-config

Signals

Stars
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Forks
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Open issues
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Last commit (this folder)
Sep 24, 2026 (1 month ago)

From GitHub (fetched Oct 24, 2026).

Details

License
License unknown
Repository
github.com/adrian-cancio/opencode-config
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

More from adrian-cancio

Cite this page

userscript-dev skill. Agent Mart. https://agentmart.dev/skills/adrian-cancio-userscript-dev (last updated 2026-10-24)