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.

Quick Start

Add this to your MCP client configuration:

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

No authentication required for browsing technologies and categories.

Available Tools

list-categories Free

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

list-technologies Free

List all technologies in a specific category with domain counts.

Parameters: category_slug

get-technology Free

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

Parameters: technology_slug, page

lookup-domain Free

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

Parameters: domain

list-my-exports API Key Required

List your purchased data exports with status and filters.

get-export API Key Required

Download the content of a completed and purchased export.

Parameters: export_id

Authentication

To access your purchased exports, add your API key to the MCP configuration:

{
    "mcpServers": {
        "larger-io": {
            "url": "/mcp",
            "headers": {
                "Authorization": "Bearer lrg_your_api_key"
            }
        }
    }
}

You can generate an API key from your account settings.

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?"