Browser UseSAFE
Browse the web, directly from Cursor etc.
Overview
From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.
[](https://x.com/cobrowser) [](https://discord.gg/gw9UpFUhyY) [](https://badge.fury.io/py/browser-use-mcp-server)
An MCP server that enables AI agents to control web browsers using [browser-use](https://github.com/browser-use/browser-use).
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Prerequisites
- uv - Fast Python package manager
- Playwright - Browser automation
- mcp-proxy - Required for stdio mode
# Install prerequisites curl -LsSf https://astral.sh/uv/install.sh | sh uv tool install mcp-proxy uv tool update-shell
Environment
Create a .env file:
OPENAI_API_KEY=your-api-key CHROME_PATH=optional/path/to/chrome PATIENT=false # Set to true if API calls should wait for task completion
Installation
# Install dependencies uv sync uv pip install playwright uv run playwright install --with-deps --no-shell chromium
Usage
SSE Mode
# Run directly from source uv run server --port 8000
stdio Mode
# 1. Build and install globally uv build uv tool uninstall browser-use-mcp-server 2>/dev/null || true uv tool install dist/browser_use_mcp_server-*.whl # 2. Run with stdio transport browser-use-mcp-server run server --port 8000 --stdio --proxy-port 9000
Client Configuration
SSE Mode Client
c34028d019adOBSERVED · 2026-09-27Connect
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.
claude mcp add browser-use-mcp-server -- uvx browser-use-mcp-server
{
"mcpServers": {
"browser-use-mcp-server": {
"command": "uvx",
"args": [
"browser-use-mcp-server"
]
}
}
}Exposed tools (2)
2 read · 0 write · 0 destructive.
| Tool | Risk | Description |
|---|---|---|
browser_get_result | read | Gets the result of an asynchronous browser task (not needed in patient mode as browser_use returns complete results directly) |
browser_use | read | Performs a browser action and returns the complete result directly (patient mode active) |
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.
| Layer | What it checks | Result |
|---|---|---|
| L0 | Provenance & inventory | PASS |
| L1 | Static analysis of the code | PASS |
| L2 | Instruction surface (what it tells the agent) | PASS |
| L3 | Class-specific surface | PASS |
| L4 | Behavioural (sandbox) | SKIPPED |
What the source does
- Filesystem
- declared (3 observation(s))
- Network
- none-observed
- Shell
- none-observed
- Dependencies
- pinned
- Secrets in source
- none-found
Findings (5)
.bandit.yml
.flake8
.mega-linter.yml
.pylintrc
curl -LsSf https://astral.sh/uv/install.sh | sh
Gates applied: no_behavioural_pass.
c34028d019adfull audit observations/trust-audit/mcp-server/co-browser__browser-use-9.json · Report an issue / request a re-scanAudit history
Every audit this server has had. A grade with a past is a grade somebody is still checking.
| Date | Source | Verdict | Grade | Score | Change |
|---|---|---|---|---|---|
| 2026-09-27 | c34028d019ad | SAFE | B | 89 | first audit |
Questions
What is the Browser Use MCP server?
Browse the web, directly from Cursor etc.
What tools does Browser Use expose?
2 in total: 2 read-only, 0 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?
No credential environment variables were found in its source, so it appears to need none.
How current is this page?
The grade is for one exact copy of the source (c34028d019ad), read on 2026-09-27. The repository is watched and re-audited when it changes.