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Introduction

The Similarweb API delivers digital intelligence at scale, powering smarter business decisions for the world's most innovative companies. Whether you're building competitive dashboards, AI applications and agents, enriching CRM data, or conducting market research, our API provides the foundational data you need to outperform your competition.

This documentation is for the latest version of our API (V5) and is currently in beta. Check out what's new in V5.

You can access V4 documentation here

Available Data

Similarweb API provides access to an unmatched breadth of digital intelligence metrics, including:

100M+ websites

Website traffic data, engagement metrics, audience and demographic insights

4M+ Apps

Mobile app performance, download estimates, app rankings, user engagement

5B+ Keywords

Keyword research, SERP analysis, SEO competitive data, rankings, and more

30M+ Companies

Company data, technographics, and lead enrichment

Global Coverage

We cover 190+ countries and territories with comprehensive digital intelligence data, including US state-level data for enhanced local market analysis.

Historical Data

Access up to 7 years of historical data for trend analysis and long-term strategic research across all data types.

Flexible API Architecture

Similarweb API provides both real-time and bulk data access to match your specific use case:

  • REST API: Perfect for real-time dashboards, applications, and on-demand queries
  • Batch API: Ideal for large-scale analysis, data warehouses, and historical research

Ready to Get Started?

1

Gain access to our API

All Similarweb paid subscriptions include API access.

2

Create an API key

It only takes a minute. Follow the steps in the Authentication guide

3

Make your first request

Follow the steps in this guide to make your first successful API request

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  • Introduction

What's New in V5

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  • What's New in V5

Authentication

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  • Authentication

Making Your First Request

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  • Making Your First Request

Available Data

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  • Available Data

Popular Use Cases

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  • Popular Use Cases

REST API vs Batch API

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  • REST API vs Batch API

API Pricing & Data Credits

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  • API Pricing & Data Credits

Error Handling & Troubleshooting

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  • Error Handling & Troubleshooting

Web Intelligence API

Endpoints returning traffic and engagement statistics.

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  • Web Intelligence API

Search Intelligence API

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  • Search Intelligence API

Sales Intelligence API

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  • Sales Intelligence API

App Intelligence API

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  • App Intelligence API

Gen AI Intelligence API

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  • Gen AI Intelligence API

Getting Started

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  • Getting Started

MCP Integrations

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  • MCP Integrations

Overview

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  • Overview

Data Visualization

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  • Data Visualization

Productivity & Analytics

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  • Productivity & Analytics

CRM & Marketing

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  • CRM & Marketing

Cloud & Data Platforms

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  • Cloud & Data Platforms

FAQ

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Country Codes

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Check Capabilities

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  • Check Capabilities
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