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Browser UseSAFE

mcp/ztobs/browser-use-5
MCP server by ztobs · Audited 2026-10-09
⚑ Report / re-scanSource ↗

Cline Browser-Use MCP

Verdict
SAFE
Grade
B
Trust score
89 /100
Exposed tools
4 3r · 1w · 0d
Transport
stdio
License
—
Stars
23
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

[](https://smithery.ai/server/@ztobs/cline-browser-use-mcp)

A Model Context Protocol server for browser automation using Python scripts. For use with Cline

Features

Browser Operations

  • screenshot: Capture a screenshot of a webpage (full page or viewport)
  • get_html: Retrieve the HTML content of a webpage
  • execute_js: Execute JavaScript on a webpage
  • get_console_logs: Get console logs from a webpage

All operations support custom interaction steps (e.g., clicking elements, scrolling) after page load.

Prerequisites

  1. (Optional but recommended) Install Xvfb for headless browser automation:
# Ubuntu/Debian
sudo apt-get install xvfb

# CentOS/RHEL
sudo yum install xorg-x11-server-Xvfb

# Arch Linux
sudo pacman -S xorg-server-xvfb

Xvfb (X Virtual Frame Buffer) creates a virtual display, allowing browser automation without detection as a bot. Learn more about Xvfb here.

  1. Install Miniconda or Anaconda
  2. Create a Conda environment:
conda create -n browser-use python=3.11
conda activate browser-use
pip install -r requirements.txt
  1. Set up LLM configuration:

The server supports multiple LLM providers. You can use any of the following API keys:

# Required: Set at least one of these API keys
export GLHF_API_KEY=your_api_key
export GROQ_API_KEY=your_api_key
export OPENAI_API_KEY=your_api_key
export OPENROUTER_API_KEY=your_api_key
export GITHUB_API_KEY=your_api_key
export DEEPSEEK_API_KEY=your_api_key
export GEMINI_API_KEY=your_api_key
export OLLAMA_API_KEY=your_api_key

# Optional: Override default configuration
export MODEL=your_preferred_model  # Override the default model
export BASE
Read from source at commit 1ef4b56f1008OBSERVED · 2026-10-09
02

Connect

Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.

claude-code
claude mcp add browser-use-server --env DEEPSEEK_API_KEY=${DEEPSEEK_API_KEY} --env GEMINI_API_KEY=${GEMINI_API_KEY} --env GITHUB_API_KEY=${GITHUB_API_KEY} --env GLHF_API_KEY=${GLHF_API_KEY} -- npx -y [email protected]
claude-desktop
{
  "mcpServers": {
    "browser-use-server": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "DEEPSEEK_API_KEY": "${DEEPSEEK_API_KEY}",
        "GEMINI_API_KEY": "${GEMINI_API_KEY}",
        "GITHUB_API_KEY": "${GITHUB_API_KEY}",
        "GLHF_API_KEY": "${GLHF_API_KEY}"
      }
    }
  }
}
03

Exposed tools (4)

3 read · 1 write · 0 destructive.

ToolRiskDescription
execute_jswriteExecute JavaScript code on a webpage
get_console_logsreadGet the console logs of a webpage
get_htmlreadGet the HTML content of a webpage
screenshotreadTake a screenshot of a webpage
04

Trust audit

SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codePASS
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfacePASS
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
none-observed
Network
none-observed
Shell
declared (1 observation(s))
Dependencies
not all pinned
Secrets in source
none-found

Findings (4)

LOWInventory / provenance · inv.no_license · CWE-1104
Why it matters. no LICENSE file and no repo licence
Fix. add a licence
LOWObfuscation / stealth · obf.decode_call · CWE-506, CWE-94
src/browser_handler.py:182
screenshot_bytes = base64.b64decode(screenshot_base64)
LOWSupply chain · supply.unpinned · CWE-829, CWE-1357
package.json
@modelcontextprotocol/sdk, @types/node, typescript
Why it matters. 3 dependency range(s) float
Fix. pin exact versions or ship a lockfile
LOWSupply chain · supply.unpinned · CWE-829, CWE-1357
requirements.txt
browser-use
Why it matters. 1 requirement(s) not pinned with ==
Fix. pin exact versions

Gates applied: no_behavioural_pass, no_license.

Audited 2026-10-09 · audit v0.4.1 · source sha 1ef4b56f1008full audit observations/trust-audit/mcp-server/ztobs__browser-use-5.json · Report an issue / request a re-scan
05

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-091ef4b56f1008SAFEB89first audit
06

Questions

What is the Browser Use MCP server?

Cline Browser-Use MCP

What tools does Browser Use expose?

4 in total: 3 read-only, 1 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.

Is Browser Use safe to connect to an agent?

The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.

What credentials does Browser Use need?

It reads DEEPSEEK_API_KEY, GEMINI_API_KEY, GITHUB_API_KEY, GLHF_API_KEY, GROQ_API_KEY, OLLAMA_API_KEY, OPENAI_API_KEY, OPENROUTER_API_KEY and XAUTHORITY from the environment. Give it a token scoped to the least it needs — an agent that can be talked into calling a tool can be talked into calling it with your credentials.

How does Browser Use run?

It speaks stdio, so it runs as a local process your client starts. It is published on npm as browser-use-server at 0.1.0.

How current is this page?

The grade is for one exact copy of the source (1ef4b56f1008), read on 2026-10-09. The repository is watched and re-audited when it changes.

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