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MCP server · Browser

gecko-mcp

· github.com/Frumane/gecko-mcp

Control Firefox browsers (Floorp, LibreWolf, Zen, Firefox) from any MCP client.

Unclaimed browser
InstallView source
37Low

Scored 4 months ago · breakdown

About gecko-mcp

gecko-mcp is an MCP server in the Browser category: control Firefox browsers (Floorp, LibreWolf, Zen, Firefox) from any MCP client.

Install

Claude Code
claude mcp add gecko-mcp -- npx -y gecko-mcp
npx
npx -y gecko-mcp

This server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.

Tools (11)

close_tabClose a tab.

Parameters not published.

find**Fast element locator** — search a page server-side by visible text and/or tag; returns a compact list of ready-to-use CSS `selector`s (~1 KB) instead of the whole HTML. Use it to find a button/link/field, then act on the selector.

Parameters not published.

get_active_tabReturn the active tab's title, URL and browserId.

Parameters not published.

launchStart any Firefox-based browser (Firefox, LibreWolf, Zen…) with Marionette enabled so gecko-mcp can drive it.

Parameters not published.

launch_floorpEnsure Floorp is running — launches it if the API isn't reachable (Windows).

Parameters not published.

list_tabsList all open tabs (title, URL, browserId, active, pinned).

Parameters not published.

navigate_tabNavigate an existing tab to a URL.

Parameters not published.

open_tabOpen a new tab at a URL; **returns the new tab's `browserId`** so you can target it.

Parameters not published.

read_pageRead a tab's content as clean Markdown (or HTML / accessibility tree). Output is capped (default 25 KB) to protect the context.

Parameters not published.

screenshotCapture a screenshot of a tab (viewport or full page).

Parameters not published.

snapshotStructured page map: Markdown with inline `fp:` refs + an element selector map — locate elements without grepping HTML, then act via a `ref`.

Parameters not published.

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Security checks

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Questions

About gecko-mcp

How do I install gecko-mcp?

Run claude mcp add gecko-mcp -- npx -y gecko-mcp, then add the server to your MCP client's configuration.

Is gecko-mcp safe to use with an AI agent?

Its trust score is 37 out of 100 (low). Conduid hasn't run static security checks on this repository yet, so review the source yourself before granting it credentials. It has no ConduID identity yet, so agent calls to it are not receipted.

Is gecko-mcp still maintained?

Conduid hasn't recorded a commit date for this repository yet. Check the repository directly for recent activity.