No red flags found in any of the 11 categories — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →
by andy-portmen · MCP Server · ★ 247
Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h
🔒 Is external-application-button safe to install? View the security audit →
External Application Launcher Use external applications through a toolbar button or context menu item. This extension lets you create a customizable toolbar button (action button) and context menu items to execute programs with your chosen command-line arguments. For example, you can: Send the current page to another browser Send selected text to a text editor Send image URLs to a photo editor Send download links to an external download manager! YouTube Preview MCP Server This extension can be used with coding agents such as OpenCode. Also it can help other extensions to introduce their tools to the agents. Read FAQs page for more info. Links Homepage Chrome Store Firefox Add-ons Opera Addons
| Stars | 247 |
| Forks | 55 |
| Language | JavaScript |
| Category | MCP Server |
| License | MPL-2.0 |
| Quality Score | 55.3027763356155/100 |
| Open Issues | 50 |
| Last Updated | 2026-07-29 |
| Created | 2017-09-27 |
| Platforms | browser, mcp, node |
| Est. Tokens | ~13k |
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external-application-button is Communicate with external applications of your OS through a toolbar button or context menu item.. It is categorized as a MCP Server with 247 GitHub stars.
external-application-button is primarily written in JavaScript. It covers topics such as chrome-extension, edge-extension, firefox-addon.
You can find installation instructions and usage details in the external-application-button GitHub repository at github.com/andy-portmen/external-application-button. The project has 247 stars and 55 forks, indicating an active community.
external-application-button is released under the MPL-2.0 license, making it free to use and modify according to the license terms.
The top alternatives to external-application-button on Agent Skills Hub include image-reader, live-stream-downloader, webbrain. Each offers a different approach to the same problem space — compare them side-by-side by stars, quality score, and community activity.
Grades come from a rule-based scan built on the SlowMist agent-security taxonomy, covering 11 red-flag categories including credential harvesting, data exfiltration, and curl | sh installers. It is a first-layer scan, not a manual audit — we say so rather than overstate it.
The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.
Sources & who's responsible: