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@andy-portmen/external-application-button

Browser extension and MCP server for external apps

External Application Launcher connects a browser to desktop programs through a toolbar button and context menu. You define commands and arguments, then send the current page, selected text, image URLs, or download links to the app you want. The repo also exposes an MCP server so agents can use the same actions.

248 stars55 forksJavaScriptUpdated 1mo ago
External Application Button - Browser Extension Review
eccorem project12k views • 5 years ago
Who it's for

Builders who want their browser actions and desktop apps available to Claude-style tools or other agent setups.

What it delivers

You can hand page content, selections, and links to external apps without copy-pasting them first.

What it does

Toolbar and context menu actions

Adds an action button and right-click menu items that run your chosen command.

Custom command-line arguments

Lets you pass page URLs, selected text, image URLs, and download links into external programs.

Browser-to-app handoff

Can send the current page to another browser or pass content to editors and download managers.

MCP server support

Exposes browser actions through `v3/mcp-server.js` so agents can use them as tools.

README

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!

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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

Files in the repo

Repository payload7 top-level entries
  • .github
  • misc
  • v2
  • v3
  • Icon
  • LICENSE
  • README.md

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