Steel MCP Server

Name: Steel MCP Server
Author: steel-dev

@steel-dev

Repository

About Steel MCP Server

MCP Server for interacting with a Steel web browser

#ai #claude #mcp-server

Basic information

Config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "steel-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@smithery/cli",
        "install",
        "@steel-dev/steel-mcp-server",
        "--client",
        "claude"
      ]
    }
  }
}

Tools

Navigate to any URL in the browser

Perform a Google search by navigating to "https://www.google.com/search?q=encodedQuery".

Click elements on the page using numbered labels

Type text into input fields using numbered labels

Scroll down the page

Scroll up the page

Navigate to the previous page in browser history

Wait for up to 10 seconds, useful for pages that load slowly or need more time for dynamic content to appear.

Capture the current page without bounding boxes or highlights and store it as a resource.

Overview

What is Steel MCP Server?

A Model Context Protocol (MCP) server that enables LLMs like Claude to navigate the web through Puppeteer-based tools and Steel. Based on the Web Voyager framework, it provides tools for all standard web actions—clicking, scrolling, typing, and taking screenshots.

How to use Steel MCP Server?

Install via Smithery (npx -y @smithery/cli install @steel-dev/steel-mcp-server --client claude) or clone, npm install, npm run build, then configure Claude Desktop with environment variables. Choose cloud mode (requires a Steel API key) or local/self-hosted mode (requires a running Steel Docker instance). The server starts automatically with Claude Desktop.

Key features of Steel MCP Server

Browser automation with Puppeteer
Steel integration for browser session management
Visual element identification via numbered labels
Screenshot capture and resource retrieval
Basic web interaction (navigate, click, type)
Lazy-loading support through scrolling

Use cases of Steel MCP Server

Search for a recipe and save the ingredients list
Track a package delivery status
Find and compare prices for a specific product
Fill out an online job application

FAQ from Steel MCP Server

What is the difference between cloud mode and local mode?

In cloud mode, browser sessions are managed via the Steel cloud service (requires STEEL_API_KEY). In local mode, you run your own Steel Docker container and no API key is needed.

What are the prerequisites to run Steel MCP Server?

You need Git, Node.js, and Claude Desktop installed. For local mode, you also need the Steel Docker image running locally.

How do I get a Steel API key?

You can obtain one from the Steel dashboard at https://app.steel.dev/settings/api-keys.

What tools does Steel MCP Server provide?

It provides navigate, search, click, type, scroll_down, scroll_up, go_back, wait, and save_unmarked_screenshot tools, all driven by numbered labels on interactive elements.

Can I view active browser sessions?

Yes. In cloud mode, sessions appear in the Steel dashboard. In local mode, visit the self-hosted dashboard at http://localhost:5173.

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