slim

MCP tool from Firefox Devtools MCP by mozilla

pages, snapshot, input, network, console

How to use it

Project documentation lists slim for the Firefox Devtools MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), then check which tools your installed version makes available. Tool availability can depend on configuration and credentials. A server handshake does not verify this tool’s behavior. See the full listing for setup details.

Install Firefox Devtools MCP

$claude mcp add firefox-devtools npx @mozilla/firefox-devtools-mcp@latest

FULL FIREFOX DEVTOOLS MCP LISTING

Other tools in Firefox Devtools MCP (4)

all

every module

basic

(default) — slim plus screenshot, utilities, management, webextension, profiler, screencast

developer

basic plus script, debugging

mozilla

developer plus prefs, privileged