Is io.github.bzsasson/screaming-frog-mcp safe to use?

io.github.bzsasson/screaming-frog-mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.

How do I install io.github.bzsasson/screaming-frog-mcp?

io.github.bzsasson/screaming-frog-mcp supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What AI clients work with io.github.bzsasson/screaming-frog-mcp?

io.github.bzsasson/screaming-frog-mcp is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse transport.

Is io.github.bzsasson/screaming-frog-mcp actively maintained?

io.github.bzsasson/screaming-frog-mcp is actively maintained — last commit was 9 days ago. It has 42 GitHub stars.

io.github.bzsasson/screaming-frog-mcp

screaming-frog-mcp

Crawl websites, export SEO data, and manage crawls via Screaming Frog SEO Spider.

42 0 tools GitHub PyPI

No known CVEs

No license

Actively maintained

Last commit 9d ago

Works with most clients

Transport: stdio, sse

0 tools

Grade F

Edit this pageView history

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Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "screaming-frog": {
      "env": {
        "SF_CLI_PATH": "/path/to/ScreamingFrogSEOSpiderLauncher"
      },
      "args": [
        "screaming-frog-mcp"
      ],
      "command": "uvx"
    }
  }
}

Are you the author?

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[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-bzsasson-screaming-frog-mcp)](https://mcppedia.org/s/io-github-bzsasson-screaming-frog-mcp)

Read me

What io.github.bzsasson/screaming-frog-mcp does

An MCP (Model Context Protocol) server that gives Claude (or any MCP-compatible client) programmatic access to Screaming Frog SEO Spider — crawl websites, export crawl data, and manage your crawl storage, all from your AI assistant.

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

uvx 'screaming-frog-mcp' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

55/100across 5 weighted dimensions

How we score →

0255075100

−45

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked screaming-frog-mcp against OSV.dev.

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.github.bzsasson/screaming-frog-mcp safe to use?: io.github.bzsasson/screaming-frog-mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install io.github.bzsasson/screaming-frog-mcp?: io.github.bzsasson/screaming-frog-mcp supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What AI clients work with io.github.bzsasson/screaming-frog-mcp?: io.github.bzsasson/screaming-frog-mcp is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse transport.
Is io.github.bzsasson/screaming-frog-mcp actively maintained?: io.github.bzsasson/screaming-frog-mcp is actively maintained — last commit was 9 days ago. It has 42 GitHub stars.

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Community

Discussion

Start a conversation

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Edit this pageView history

Browser Marketing

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "screaming-frog": {
      "env": {
        "SF_CLI_PATH": "/path/to/ScreamingFrogSEOSpiderLauncher"
      },
      "args": [
        "screaming-frog-mcp"
      ],
      "command": "uvx"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/io-github-bzsasson-screaming-frog-mcp)](https://mcppedia.org/s/io-github-bzsasson-screaming-frog-mcp)

Read me

What io.github.bzsasson/screaming-frog-mcp does

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

uvx 'screaming-frog-mcp' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

README

Screaming Frog SEO Spider MCP Server

An MCP (Model Context Protocol) server that gives Claude (or any MCP-compatible client) programmatic access to Screaming Frog SEO Spider, crawl websites, export crawl data, and manage your crawl storage, all from your AI assistant.

See it in action

The Pre-Launch Website Audit skill for Claude Code uses this MCP server for its technical SEO and on-page audits, site-wide crawl data, custom extractions, bulk analysis across all URLs. The skill runs 5 coordinated sub-audits and works without SF (bash fallbacks), but Screaming Frog is the biggest upgrade for crawl-dependent checks.

Prerequisites

Screaming Frog SEO Spider installed on your machine (tested with v23.x, should work with v16+). Download from: https://www.screamingfrog.co.uk/seo-spider/
A valid Screaming Frog license. The free version has a 500-URL crawl limit. Most MCP features (headless CLI, saving/loading crawls, exports) require a paid license.
Python 3.10+

Important: How the Workflow Works

Screaming Frog uses an internal database that can only be accessed by one process at a time. This means:

You must close the Screaming Frog GUI before the MCP server can access crawl data.

The typical workflow is:

Run your crawl — either through the SF GUI (with all your custom settings, filters, etc.) or via the MCP crawl_site tool.
Close the Screaming Frog GUI — the GUI locks the crawl database. The MCP server's headless CLI cannot read or export data while the GUI is running.
Use the MCP tools — once the GUI is closed, you can list crawls, export data, read CSVs, and more through your AI assistant.

If you forget to close the GUI, the server will detect it and show a clear error message telling you to quit SF first.

Setup

Option A: Install from PyPI (recommended)

pip install screaming-frog-mcp

Or run directly with uvx (no install needed):

uvx screaming-frog-mcp

Option B: Clone and install from source

git clone https://github.com/bzsasson/screaming-frog-mcp.git
cd screaming-frog-mcp
python3 -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt

Configure the CLI path

The default Screaming Frog CLI path works for macOS. If you're on Linux or Windows, set the SF_CLI_PATH environment variable:

OS	Default Path
macOS	`/Applications/Screaming Frog SEO Spider.app/Contents/MacOS/ScreamingFrogSEOSpiderLauncher`
Linux	`/usr/bin/screamingfrogseospider`
Windows	`C:\Program Files (x86)\Screaming Frog SEO Spider\ScreamingFrogSEOSpiderCli.exe`

If you cloned the repo, copy .env.example to .env and edit it.

Add to Claude Code

If installed via pip/uvx:

{
  "mcpServers": {
    "screaming-frog": {
      "command": "uvx",
      "args": ["screaming-frog-mcp"],
      "env": {
        "SF_CLI_PATH": "/path/to/ScreamingFrogSEOSpiderLauncher"
      }
    }
  }
}

If cloned from source:

{
  "mcpServers": {
    "screaming-frog": {
      "command": "/path/to/screaming-frog-mcp/.venv/bin/python",
      "args": ["/path/to/screaming-frog-mcp/sf_mcp.py"]
    }
  }
}

Add to Claude Desktop

Add to your Claude Desktop config (claude_desktop_config.json):

{
  "mcpServers": {
    "screaming-frog": {
      "command": "uvx",
      "args": ["screaming-frog-mcp"],
      "env": {
        "SF_CLI_PATH": "/path/to/ScreamingFrogSEOSpiderLauncher"
      }
    }
  }
}

Available Tools

Tool	Description
`sf_check`	Verify Screaming Frog is installed, check version and license status
`crawl_site`	Start a headless background crawl (see note below)
`crawl_status`	Check progress of a running crawl
`list_crawls`	List all saved crawls with their Database IDs
`export_crawl`

... View full README on GitHub

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

55/100across 5 weighted dimensions

How we score →

0255075100

−45

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked screaming-frog-mcp against OSV.dev.

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is io.github.bzsasson/screaming-frog-mcp safe to use?: io.github.bzsasson/screaming-frog-mcp has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments.
How do I install io.github.bzsasson/screaming-frog-mcp?: io.github.bzsasson/screaming-frog-mcp supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What AI clients work with io.github.bzsasson/screaming-frog-mcp?: io.github.bzsasson/screaming-frog-mcp is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse transport.
Is io.github.bzsasson/screaming-frog-mcp actively maintained?: io.github.bzsasson/screaming-frog-mcp is actively maintained — last commit was 9 days ago. It has 42 GitHub stars.