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Vibetest Use MCP

An MCP server that spins up several browser agents to test a site for broken links, UI bugs and accessibility issues

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MCP server

Extended access

Why this level

  • Drives a real browser and navigates sites
  • Sends page data to the Gemini model
All reasons and checks
Needs a VPN

browser-use/vibetest-useAuthor:Browser Use

Install

Manual install

claude mcp add vibetest /full/path/to/vibetest-use/.venv/bin/vibetest-mcp -e GOOGLE_API_KEY="your_api_key"

First run: uv venv, uv pip install -e ., playwright install chromium.

Access and checks

How we review

Extended accessThe tool runs code or makes network calls and only reads external data.

  • Drives a real browser and navigates sites
  • Sends page data to the Gemini model

This is third-party code. Review the repository files before installing.

What it does

Vibetest runs an MCP server that, on a single command, launches a group of Browser Use agents and sends them across a given site. The agents look for UI defects, broken links, accessibility problems and other technical issues, then collect the findings into a report. It works on both a live site and local development on localhost. The request sets the URL, the number of agents and the window mode, headless or visible. The server connects to Claude Code and Cursor.

Who it is for. For developers and QA engineers who want a quick agent-driven pass over a site.

Good fit when

  • You want a quick site pass for broken links and UI defects
  • You want to test a local build on localhost before publishing
  • You want to parallelize the check across several agents

Not a fit when

  • You need a deterministic test suite with fixed scenarios
  • You have no Google API key or access to the Gemini model

Example request

Run vibetest on localhost:3000 with five agents and collect a report

MCP

Transport
stdio
Authentication
API key

Environment variables

GOOGLE_API_KEY required, secret
Google API key for the gemini-2.0-flash model

Limitations

It needs a Google API key and runs on the gemini-2.0-flash model. It requires Python 3.11 and a Chromium install via playwright. Installation is from source with uv; there is no published registry package. Agent checks are non-deterministic, so results vary between runs.

How to disable. Remove the vibetest entry from the agent's MCP configuration and delete the project's local environment.

FAQ

Can it test a local site?

Yes, the server works with both a public URL and localhost, for example localhost:3000 or localhost:8080.

Why multiple agents?

The user sets the agent count, default three; more agents give a broader pass in a single run.

Discussion

No questions or reviews yet.

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README in short

The README presents Vibetest as an MCP server for automated agent-driven QA of a site with Browser Use agents. Installation uses uv with an editable package install and a Chromium download for playwright. For Claude Code the server is added with claude mcp add and a Google API key, for Cursor through the MCP settings. The request sets the URL, agent count and headless mode. It needs Python 3.11 and a Google API key for the gemini-2.0-flash model. MIT licensed.

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