Developers

Access Larger.io data from your AI assistant via the Model Context Protocol (MCP). Browse 11M+ domains and 4,800+ web technologies directly from Claude, Cursor, or any MCP-compatible client.

Free account required

All MCP tools require authentication via a free Larger.io account. When you connect for the first time, your MCP client will open a browser window to sign in and authorize access. Create your free account.

Quick Start

Add this to your MCP client configuration (Claude, Cursor, etc.): 

{
    "mcpServers": {
        "larger-io": {
            "url": "/mcp"
        }
    }
}

Your MCP client handles authentication automatically via OAuth. No API key or token needed — just sign in when prompted.

How It Works

  1. 1Add the configuration above to your MCP client.
  2. 2On first use, a browser window opens to sign in to your Larger.io account.
  3. 3Authorize the application and you're ready to go. The session persists across uses.

Available Tools

list-categories

Browse all technology categories with their top technologies and domain counts.

list-technologies

List all technologies in a specific category with domain counts.

Parameters: category_slug

search-technologies

Search technologies and categories by name. Returns matching categories with their technologies and domain counts.

Parameters: query

get-technology

Get technology details, top domains, language distribution, and related technologies.

Parameters: technology_slug, page

lookup-domain

Live scan a domain to detect its technologies, language, and emails.

Parameters: domain

list-my-exports

List your purchased data exports with status and filters.

get-export

Download the content of a completed and purchased export.

Parameters: export_id

Use Cases

  • •Competitive analysis — "What technologies does competitor.com use?"
  • •Market research — "How many sites use Shopify vs WooCommerce?"
  • •Lead generation — "Find the top-ranked sites using React"
  • •Technology adoption — "What are the most popular JavaScript frameworks?"