Gecko MCP vs Selenium MCP — MCP Server Comparison | AllMCPs
Side-by-Side Model Context Protocol Comparison
Gecko MCP vs Selenium MCP
In-depth architectural comparison of the Gecko MCP and Selenium MCP MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.
At a Glance & Executive Verdict
Gecko MCP
Browser Automation · Local stdio
Quality: 49/100 (Fair) | Auth: No auth required
Selenium MCP
Browser Automation · Local stdio
Quality: 59/100 (Good) | Auth: No auth required
Verdict Summary: Choose Gecko MCP if you need specialized Browser Automation tools running via a local process. Choose Selenium MCP if your workspace requires Browser Automation integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.
Which MCP Server Should You Choose?
Choose Gecko MCP when:
You need dedicated capabilities in the Browser Automation domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Control Firefox browsers (Floorp, LibreWolf, Zen, Firefox) from any MCP client.
Python MCP server for Selenium WebDriver — 84 tools for browser automation, element interactions, assertions, and self-healing locators, plus codegen for Java TestNG / JUnit 5 / Cucumber / pytest / C NUnit / Playwright and CI pipelines (GitHub Actions / Jenkins / GitLab CI). No ChromeDriver setup needed.
Gecko MCP is categorized under Browser Automation and uses a local stdio subprocess. In contrast, Selenium MCP belongs to Browser Automation using local stdio subprocess. Select Gecko MCP when you need capabilities focused on browser automation and Selenium MCP when you require tools for browser automation.
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.
snapshot
Structured page map: Markdown with inline `fp:` refs + an element selector map — locate elements without grepping HTML, then act via a `ref`.
screenshot
Capture a screenshot of a tab (viewport or full page).
launch_floorp
Ensure Floorp is running — launches it if the API isn't reachable (Windows).
launch
Start any Firefox-based browser (Firefox, LibreWolf, Zen…) with Marionette enabled so gecko-mcp can drive it.
click
Click an element by CSS selector **or a `ref` from `snapshot`**; auto-scrolls it into view first.
+24 more tools listed on main page
Selenium MCP Tools (78)
start_browser
Optional — Chrome auto-starts on first use. Use this to pick Firefox, enable headless, or set window size