Atlas / MCP servers / ritvij14 / Crawl4AI

Crawl4AISAFE

mcp/ritvij14/crawl4ai-1
Verdict
SAFE
Grade
B
Trust score
89 /100
Exposed tools
2 2r · 0w · 0d
Transport
stdio
License
—
Stars
24
01

Overview

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

A Model Context Protocol (MCP) server implementation that integrates Crawl4AI with Cursor AI, providing web scraping and crawling capabilities as tools for LLMs in Cursor Composer's agent mode.

System Requirements

Python 3.10 or higher installed.

Current Features

  • Single page scraping
  • Website crawling

Installation

Basic setup instructions also available in the Official Docs for MCP Server QuickStart.

Set up your environment

First, let's install uv and set up our Python project and environment:

MacOS/Linux:

curl -LsSf https://astral.sh/uv/install.sh | sh

Windows:

powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 | iex"

Make sure to restart your terminal afterwards to ensure that the uv command gets picked up.

After that:

  1. Clone the repository
  1. Install dependencies using UV:
# Navigate to the crawl4ai-mcp directory
cd crawl4ai-mcp

# Install dependencies (Only first time)
uv venv
uv sync

# Activate the venv
source .venv/bin/activate

# Run the server
python main.py
  1. Add to Cursor's MCP Servers or Claude's MCP Servers

You may need to put the full path to the uv executable in the command field. You can get this by running which uv on MacOS/Linux or where uv on Windows.

{
"mcpServers": {
"Crawl4AI": {
"command": "uv",
"args": [
"--directory",
"/ABSOLUTE/PATH/TO/PARENT/FOLDER/crawl4ai-mcp",
"run",
"main.py"
]
}
}
}

Tools Provided

This MCP server exposes the following tools to the LLM:

  1. `scrape_webpage(url: str)`
  • Description: Scrapes the content and metadata from a single webpage using Crawl4AI.
  • Parameters:
  • url (string, required): The URL of the webpage to scrape.
  • Returns: A list containing a TextContent object with the s
Read from source at commit 58b3e8d96419OBSERVED · 2026-10-09
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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.

claude-code
claude mcp add crawl4ai-mcp -- uvx crawl4ai-mcp
claude-desktop
{
  "mcpServers": {
    "crawl4ai-mcp": {
      "command": "uvx",
      "args": [
        "crawl4ai-mcp"
      ]
    }
  }
}
03

Exposed tools (2)

2 read · 0 write · 0 destructive.

ToolRiskDescription
crawl_websiteread
scrape_webpageread
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
none-observed
Dependencies
pinned
Secrets in source
none-found

Findings (2)

LOWInventory / provenance · inv.no_license · CWE-1104
Why it matters. no LICENSE file and no repo licence
Fix. add a licence
INFOSupply chain · prompt.pipe_to_shell · CWE-829, CWE-1357
README.md:25
curl -LsSf https://astral.sh/uv/install.sh | sh

Gates applied: no_behavioural_pass, no_license.

Audited 2026-10-09 · audit v0.4.1 · source sha 58b3e8d96419full audit observations/trust-audit/mcp-server/ritvij14__crawl4ai-1.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
2026-10-0958b3e8d96419SAFEB89first audit
06

Questions

What tools does Crawl4AI 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 Crawl4AI 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 Crawl4AI need?

No credential environment variables were found in its source, so it appears to need none.

How does Crawl4AI run?

It speaks stdio, so it runs as a local process your client starts. It is published on PyPI as crawl4ai-mcp.

How current is this page?

The grade is for one exact copy of the source (58b3e8d96419), read on 2026-10-09. The repository is watched and re-audited when it changes.

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