Similarweb MCP Server

Official remote MCP server giving AI agents access to Similarweb's digital intelligence data: web traffic, keywords, audience, technographics, and app analytics.

Analytics by Similarweb API Key active

Connect (Remote Server) Docs

Overview

The Similarweb MCP server is an officially hosted remote endpoint at https://mcp.similarweb.com that exposes Similarweb's digital intelligence platform to AI agents and MCP-compatible clients. It provides standardized tool calls for 75+ data endpoints across web analytics, competitive intelligence, audience demographics, app store performance, and keyword/SERP data, all backed by Similarweb's panel of roughly 210 million users.

The server is organized into three tool categories: Web Metrics (traffic and engagement, traffic sources, website rank, similar sites, referrals, audience overlap, demographics, technologies, segments, PPC spend, and more), Search Metrics (SERP Players, SERP Clicks), and App Metrics (App Install Penetration, App Store Rank, App Details). It runs as a streamable HTTP remote service, so there is no local installation. Connection is handled through one-click setup in Claude Desktop, Cursor, VS Code, Zapier, n8n, and other MCP-compatible clients.

Access requires a Similarweb subscription that includes API access (API-only, Business, or Enterprise) plus an active API key generated from User Settings > API Access in the Similarweb dashboard. MCP queries consume the same data credits as the standard Similarweb REST API, with credit cost varying by the volume of data the agent pulls.

Tools

Tool	Description
`traffic_and_engagement`	Visits, time on site, pages per visit, and bounce rate for a domain.
`traffic_sources`	Breakdown of traffic by channel: direct, organic search, paid search, social, referral, email, display.
`website_rank`	Global, country, and category rank for a website.
`similar_sites`	Sites that are similar to a given domain.
`subdomains`	Top subdomains and their share of traffic for a domain.
`referrals`	Top referring sites driving traffic to a domain.
`popular_pages`	Most visited pages on a domain.
`leading_folders`	Top URL folders by traffic share for a domain.
`audience_interests`	Categories and sites the audience of a domain is also interested in.
`audience_overlap`	Audience overlap between a domain and a set of competitor domains.
`deduplicated_audience`	Deduplicated audience size across multiple domains.
`demographics`	Age and gender distribution of a domain's audience.
`traffic_by_demographics`	Traffic volume broken out by demographic segments.
`geography`	Top countries driving traffic to a domain.
`technologies`	Technology stack and tools detected on a domain.
`ad_networks`	Ad networks used by a domain for paid traffic.
`ppc_spend`	Estimated paid search spend for a domain.
`segment_traffic_and_engagement`	Traffic and engagement metrics for a defined segment of a site.
`segment_traffic_sources`	Traffic source breakdown for a defined site segment.
`serp_players`	Top domains ranking for a given keyword.
`serp_clicks`	Click trends over time for a keyword's SERP.
`app_details`	Metadata, category, publisher, and store info for an iOS or Android app.
`app_store_rank`	App store ranking history for an app.
`app_install_penetration`	Estimated install penetration rates for an app.

Setup Guide

Prerequisites

A Similarweb subscription with API access (API-only, Business, or Enterprise plan)
An active Similarweb API key from your account dashboard (User Settings > API Access)
An MCP-compatible client (Claude Desktop, Cursor, VS Code, Zapier, n8n, etc.)

Server URL

https://mcp.similarweb.com

The server runs over streamable HTTP, no local install required.

Claude Desktop / Claude.ai

Open Claude and go to Settings > Connectors (or click the + button in the chat input).
Search for and select the Similarweb connector.
Paste your Similarweb API key when prompted.
Toggle the Similarweb connector on for each conversation where you want to query data.

Cursor / VS Code / other MCP clients

For clients that accept a remote MCP URL directly, add the server in your MCP config:

{
  "mcpServers": {
    "similarweb": {
      "url": "https://mcp.similarweb.com"
    }
  }
}

You will be prompted for your Similarweb API key during the connection flow. Refer to the official Similarweb MCP docs and the Claude integration guide for the latest client-specific steps.

Notes on credits

MCP requests draw from the same data credit pool as the standard Similarweb REST API. Credit consumption depends on which endpoints the agent calls and how much data is returned.

Use Cases

Pull traffic, engagement, and traffic source mix for a competitor domain to feed a weekly competitive intel report.
Run keyword-level SERP analysis (top players and click trends) to find SEO opportunities the AI agent can prioritize.
Compare audience overlap and deduplicated reach across a set of competitor domains for media planning.
Enrich account lists with technographic data (technologies installed on a target's website) for B2B outbound campaigns.
Track app store rank, install penetration, and app details over time for product and market research on iOS and Android apps.

Example Prompts

"Compare traffic_and_engagement for stripe.com vs adyen.com over the last 90 days and call out the biggest gaps."
"Use serp_players and serp_clicks to show me the top domains and click trend for the keyword 'crm software' in the US."
"Pull traffic_sources for hubspot.com and break out paid vs organic share month over month for the last 6 months."
"Find similar_sites to notion.so, then return audience_overlap between Notion and each of them."
"Get app_store_rank and app_install_penetration for the Duolingo iOS app in the US over the last year."

Pros

Official, vendor-hosted remote MCP server, no local install or self-hosting required.
Broad coverage: 75+ endpoints spanning web traffic, audiences, technographics, search/SERP, and app intelligence.
Native one-click connectors for Claude Desktop, Cursor, VS Code, Zapier, and n8n.
Data is sourced from Similarweb's full panel, the same data exposed via its REST API.

Limitations

Requires a paid Similarweb subscription with API access (API-only, Business, or Enterprise), not available on free tiers.
Every MCP call burns data credits from your API allocation, so unconstrained agent use can get expensive.
Connector must be toggled on per conversation in Claude, and ChatGPT support was still listed as "coming later" at launch.

Alternatives

SEMrush MCP integrations via community servers for keyword and traffic data.
Ahrefs MCP style community servers for backlinks and SEO metrics.
Google Analytics MCP server for first-party site traffic analytics instead of third-party panel estimates.