Similarweb MCP server for your AI

Pull any domain's visits, channel mix and organic keywords, size up a rival's app downloads, or enrich a lead with firmographics — without opening the dashboard.

PopMCPSimilarweb

Compare visits, bounce rate and time on site for stripe.com and adyen.com

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Supported Similarweb tools

Every read endpoint across traffic, keywords, apps, audience, ranking and company data, plus the alerts PopMCP can watch for you.

similarweb_app_active_users_android

Estimated MAU/WAU/DAU for an Android app (current v5).

similarweb_app_active_users_ios

Estimated MAU/WAU/DAU for an iOS app (current v5).

similarweb_app_details

App metadata (publisher, category, description, ratings, last-updated).

similarweb_app_downloads_android

Estimated Android (Google Play) app downloads over time (current v5).

similarweb_app_downloads_ios

Estimated iOS (Apple App Store) app downloads over time (current v5).

similarweb_app_id_lookup

Search an app store by name to resolve an app's id and publisher.

similarweb_app_rank

App store-rank (top-charts position) over time for a country/category/chart.

similarweb_avg_visit_duration_total

Average visit duration in seconds for a domain (desktop + mobile web).

similarweb_bounce_rate_total

Bounce rate for a domain (desktop + mobile web).

similarweb_marketing_channels_desktop

DESKTOP traffic by marketing channel (visits, share, engagement).

similarweb_organic_keyword_competitors_desktop

Websites competing for the same ORGANIC keywords as a domain (DESKTOP), with overlap score and shared-keyword share.

similarweb_pages_per_visit_total

Average page views per visit for a domain (desktop + mobile web).

similarweb_pageviews_total

Estimated total page views (desktop + mobile web) for a domain.

similarweb_referrals_desktop

Top DESKTOP referral sources (referring websites) with share and engagement.

similarweb_social_referrals_desktop

Top DESKTOP social referral sources (e.g.

similarweb_traffic_by_country_total

Total-traffic geographic distribution for a domain by country (share, visits, pages/visit, avg time, bounce rate, rank).

similarweb_traffic_sources_overview_desktop

DESKTOP traffic-sources overview: share of traffic from each channel (direct, referrals, search, social, mail, display, paid).

similarweb_traffic_sources_overview_mobile

MOBILE-WEB visits by channel (organic search, paid search, direct, display, email, referrals, social).

similarweb_visits_total

Estimated total visits (desktop + mobile web) to a domain over time.

similarweb_audience_interests_total

'Also visited' websites that a domain's TOTAL audience also visits (audience interests across desktop + mobile web).

similarweb_country_rank

Monthly Country Rank for a domain within a specific country.

similarweb_demographics_age_total

Demographics 2.0: total audience age distribution across six brackets (18-24, 25-34, 35-44, 45-54, 55-64, 65+).

similarweb_demographics_gender_total

Demographics 2.0: total audience gender distribution (male/female shares).

similarweb_desktop_vs_mobile_split

Desktop vs.

similarweb_global_rank

SimilarWeb Global Rank for a domain, from estimated monthly unique visitors and page views across desktop and mobile.

similarweb_industry_rank

The industry (formerly 'category') of a domain and its worldwide Industry Rank within it.

similarweb_new_vs_returning_total

Total audience split between new and returning users for a domain, with a per-month graph.

similarweb_keyword_serp_players

Top websites (SERP players / competitors) driving search traffic for a keyword, with organic/paid metrics, SERP features, rankings.

similarweb_keywords_landing_pages

Organic search landing pages for a domain with traffic metrics, keyword data, and SERP features.

similarweb_keywords_overview

Keyword performance overview for one keyword or keyword list: search volume, clicks, zero-click rate, SERP composition, organic difficulty, paid competition, intent, CPC range, total spend.

similarweb_website_keywords

Organic and paid search keywords driving traffic to a domain, with clicks, difficulty, intent, SERP features.

similarweb_company_analysis_total

Total (desktop + mobile-web) traffic & engagement for a COMPANY entity (visits, pages/visit, page-views, bounce-rate, visit-duration).

similarweb_lead_enrichment

Enrich a domain as a sales lead: firmographics + traffic & engagement signals (company name, revenue, employees, traffic, device split, sources, geo).

similarweb_popular_pages_total

Most popular pages of a website by TOTAL traffic (default 100 rows).

similarweb_api_lite_overview

The full dataset behind SimilarWeb's free tool (worldwide): traffic, engagement, category rank, traffic sources, referrals, keywords, social, related sites — in one call.

similarweb_check_capabilities

Account API capabilities: remaining data credits, available country filters, and accessible historical date ranges per data category.

similarweb_list_categories

The SimilarWeb top-sites category taxonomy (main categories + nested subcategories), with identifiers formatted ParentCategory~SubcategoryName for use as the 'category' filter in top-sites tools.

similarweb_similar_sites

Top most-similar websites to a domain with a similarity score (default 40 rows, max 40).

similarweb_website_description

A website's meta description.

similarweb_website_technologies

Web technologies, plugins, and integrations installed on a website (technographics).

similarweb_app_audience_interests

Apps used by the same audience as a given Android app (also-used apps) with affinity scores.

similarweb_app_avg_session_time_android

Average session duration (seconds) for an Android app (LEGACY v1).

similarweb_app_daily_stickiness

Daily stickiness (average DAU / MAU ratio) for an app (LEGACY v1).

similarweb_app_dau

Daily active users for an app (LEGACY v1).

similarweb_app_dau_ios

Daily active users (DAU) for an iOS app (LEGACY v4).

similarweb_app_demographics_age

Age demographic breakdown of an Android app's users (18-24, 25-34, 35-44, 45-54, 55+) (LEGACY v1).

similarweb_app_demographics_age_over_time

Age demographic breakdown of an Android app's users OVER TIME (v4).

similarweb_app_demographics_gender

Gender demographic breakdown of an Android app's users (LEGACY v1).

similarweb_app_demographics_gender_over_time

Gender demographic breakdown of an Android app's users OVER TIME (v4).

similarweb_app_downloads

Estimated app downloads over time (LEGACY).

similarweb_app_install_penetration

App install penetration / current active installs over time (share of devices with the app installed).

similarweb_app_mau

Unique monthly active users (MAU) for an app (LEGACY v1).

similarweb_app_related_sites

Websites related to a given app (audience overlap).

similarweb_app_sessions_android

Android app session engagement (sessions per user, avg session time, total session time per user).

similarweb_app_sessions_ios

iOS app session engagement (sessions per user, avg session time, total session time per user).

similarweb_app_sessions_per_user_android

Average sessions per user for an Android app (LEGACY v1).

similarweb_app_total_session_time_android

Total session time per user for an Android app (LEGACY v1).

similarweb_app_unique_installs

Estimated unique installs (distinct devices that installed the app) over time.

similarweb_app_user_retention

App user retention at 1/2/3/4/5/7/14/30-day intervals (app + category-level) (LEGACY v1).

similarweb_app_wau_android

Weekly active users (WAU) for an Android app (LEGACY v4).

similarweb_app_wau_ios

Weekly active users (WAU) for an iOS app (LEGACY v4).

similarweb_site_related_apps

Mobile apps related to a given website (audience overlap).

similarweb_top_android_apps

Top Android (Google Play) apps store-rank chart for a country/category.

similarweb_top_android_apps_usage

Top Android (Google Play) apps ranked by USAGE (active users) for a country/category.

similarweb_top_ios_apps

Top iOS (Apple App Store) apps store-rank chart for a country/category.

similarweb_ad_networks_desktop

Incoming DESKTOP ad networks driving display-ad traffic (e.g.

similarweb_avg_visit_duration_desktop

Average DESKTOP visit duration in seconds for a domain.

similarweb_avg_visit_duration_mobile

Average MOBILE-WEB visit duration in seconds for a domain.

similarweb_bounce_rate_desktop

DESKTOP bounce rate (share of single-page sessions) for a domain.

similarweb_bounce_rate_mobile

MOBILE-WEB bounce rate for a domain.

similarweb_display_publishers_desktop

Incoming DESKTOP display publishers (sites that displayed ads) driving traffic, with share and engagement.

similarweb_organic_keyword_competitors_mobile

Websites competing for the same ORGANIC keywords as a domain (MOBILE WEB), with overlap score and shared-keyword share.

similarweb_organic_outgoing_links_desktop

Outgoing organic referral links from a website (DESKTOP): destination domains it sends outbound organic traffic to.

similarweb_outgoing_ads_ad_networks_desktop

Outgoing DESKTOP ad networks the website advertises through, with share and engagement.

similarweb_outgoing_ads_advertisers_desktop

Outgoing DESKTOP advertisers (destination sites) the website sends paid ad traffic to.

similarweb_outgoing_referrals_mobile

MOBILE-WEB outgoing referral links: traffic share, change, and outgoing mobile visits to destination domains.

similarweb_pages_per_visit_desktop

Average DESKTOP pages-per-visit for a domain.

similarweb_pages_per_visit_mobile

Average MOBILE-WEB pages-per-visit for a domain.

similarweb_pageviews_desktop

Total DESKTOP page views for a domain.

similarweb_pageviews_mobile

Total MOBILE-WEB page views for a domain.

similarweb_paid_keyword_competitors_desktop

Websites competing for the same PAID keywords as a domain (DESKTOP), with overlap score and shared-keyword share.

similarweb_paid_keyword_competitors_mobile

Websites competing for the same PAID keywords as a domain (MOBILE WEB), with overlap score and shared-keyword share.

similarweb_ppc_spend_desktop

Estimated DESKTOP PPC (paid-search) ad spend.

similarweb_ppc_spend_total

Estimated total spend on PPC search terms over the analyzed period.

similarweb_publishers_per_ad_network_desktop

DESKTOP display publishers for a SPECIFIC incoming ad network (set via AdNetwork).

similarweb_referrals_mobile

MOBILE-WEB referring websites with traffic share, change, and incoming mobile visits.

similarweb_traffic_by_country_desktop

DESKTOP traffic distribution for a domain by country.

similarweb_traffic_by_country_mobile

MOBILE traffic distribution for a domain by country (share, visits, pages/visit, avg time, bounce, rank).

similarweb_traffic_sources_avg_visit_duration_desktop

Average DESKTOP visit duration broken down by traffic channel.

similarweb_traffic_sources_bounce_rate_desktop

DESKTOP bounce rate broken down by traffic channel.

similarweb_traffic_sources_pages_per_visit_desktop

DESKTOP pages-per-visit broken down by traffic channel.

similarweb_unique_visitors_desktop

Distinct DESKTOP visitors for a domain.

similarweb_unique_visitors_mobile

Distinct MOBILE-WEB visitors for a domain.

similarweb_visits_desktop

Estimated DESKTOP visits to a domain over time.

similarweb_visits_mobile

Estimated MOBILE-WEB visits to a domain over time.

similarweb_audience_interests_desktop

'Also visited' websites that a domain's DESKTOP audience also visits.

similarweb_audience_interests_mobile

'Also visited' websites that a domain's MOBILE-WEB audience also visits.

similarweb_audience_overlap

Audience overlap (shared and unique visitor counts) between 2-5 domains on desktop.

similarweb_conversion_analysis_total

Conversion metrics (visits, converted visits, conversion rate, stickiness) for a predefined CONVERSION SEGMENT on desktop.

similarweb_deduplicated_audience

Number of individuals visiting a domain monthly, deduplicated across desktop and mobile.

similarweb_demographics_age_gender_groups

Demographics 2.0: audience share + engagement (unique-visitor ratio, pages/visit, bounce rate, visit duration) by combined age-and-gender groups.

similarweb_top_similarrank_sites_total

The top-ranked websites globally across desktop and mobile web, ordered by SimilarRank (based on unique visitors and page views).

similarweb_top_sites_desktop

Top DESKTOP sites (ranking) for a category and country.

similarweb_top_sites_mobile

Last month's top websites in a category, by MOBILE-WEB traffic (100 results per request).

similarweb_top_sites_total

Last month's top websites in a category, by TOTAL (desktop + mobile-web) traffic (up to 100 results per request).

similarweb_keywords_aggregated_overview

Aggregated keyword performance overview across keyword search: search volume, clicks, traffic-share breakdown, competition, CPC ranges.

similarweb_serp_players_clicks_over_time

Monthly / 28-day click trends for the top websites ranking for a keyword.

similarweb_website_keywords_branded_distribution

Branded vs.

similarweb_list_predefined_segments

List all predefined segments on your account (IDs, names, domains, supported countries, sector).

similarweb_list_segments

List the custom traffic-and-engagement segments on your account.

similarweb_segment_marketing_channels

DESKTOP traffic & engagement across 8 marketing channels for a segment (up to 37 months).

similarweb_segment_marketing_channels_total

ALL-TRAFFIC visits by marketing channel (8 channels) for a segment.

similarweb_segment_traffic_and_engagement

DESKTOP traffic & engagement metrics for a segment (visits, share, pages/visit, page-views, bounce, duration, unique visitors).

similarweb_segment_traffic_and_engagement_total

ALL-TRAFFIC traffic & engagement metrics for a segment.

similarweb_company_analysis_desktop

Desktop traffic & engagement for a COMPANY entity.

similarweb_company_analysis_mobile

Mobile-web traffic & engagement for a COMPANY entity.

similarweb_list_custom_industry_entities

Describe a custom industry: the entities (domains/segments) that make it up.

similarweb_folders_total

Leading folders (URL paths) of a website by TOTAL traffic share (default 100 rows).

similarweb_rank_tracking_campaign_overview

Rank Tracker: campaign performance-over-time (daily visibility, avg weighted position, clicks, share of voice).

similarweb_rank_tracking_describe

Rank Tracker: list available campaigns and their configuration (campaignId, scrapingConfigurations with location/device/language/search-engine, tags, competitors, mainDomain, availableSorts).

similarweb_rank_tracking_keywords_position_trend

Rank Tracker: per-keyword position over time (keyword, topUrl, geoLocation, date, position).

similarweb_rank_tracking_keywords_snapshot

Rank Tracker: keywords snapshot table of per-keyword metrics.

similarweb_subdomains_desktop

Subdomains of a website with their DESKTOP traffic share (default 100 rows).

similarweb_subdomains_mobile

Subdomains of a website with their MOBILE traffic share (default 100 rows), aggregated by month.

similarweb_check_user_usage

The requesting user's allowance and remaining usage.

Connect Similarweb to your AI

Credentials off one Similarweb screen, then an endpoint your client signs into. Nothing to deploy, and nothing to install.

In Similarweb, open Settings → Account, pick Standard API / Batch API under API and hit Generate a new API key. Paste it into API Key — no OAuth, no client secret, no refresh. That one key reaches the whole API.

API Key••••••••••••3f7a

ConnectionVerified

Drop the PopMCP URL into Claude, ChatGPT, Codex or any other supported client. It signs in through PopMCP with OAuth, so your Similarweb credential never leaves the server.

app.popmcp.com/mcp/…

Claude wants to connectApprove

Ask for something harmless before you turn writes on. Once it comes back clean, widen the tool set or switch the connection to full access.

Compare visits, bounce rate and time on site for stripe.com and adyen.com

similarweb_visits_totalok

Then just ask for the work

“Compare visits, bounce rate and time on site for stripe.com and adyen.com”
- visits_total
- bounce_rate_total
- avg_visit_duration_total
“Where does notion.so's desktop traffic come from and who's referring it?”
- traffic_sources_overview_desktop
- marketing_channels_desktop
- referrals_desktop
“Pull figma.com's top organic keywords and show who else ranks for them”
- website_keywords
- keywords_overview
- keyword_serp_players
“Is duolingo's iOS app growing faster than its website traffic?”
- app_id_lookup
- app_downloads_ios
- app_active_users_ios
- visits_total

Contact support View docs

Use Similarweb from the assistant you already open

One hosted endpoint, registered once per client. The same tools and the same permissions, whichever window the request comes from.

Claude DesktopCustom connector

Add the PopMCP URL under Settings → Connectors and the tools appear in every chat.

Claude WebCustom connector

The same endpoint, registered in the browser. Nothing to install on the machine you are working from.

ChatGPTCustom connector

CodexDesktop & CLI

Wire the endpoint into Codex or the Codex CLI when a task needs live business context, not a fixture.

OpenCodeCoding agent

ZCodeDesktop app

Add PopMCP as an MCP server in Z.ai's desktop app and work the account from the same window.

Contact support View docs

FAQ

Similarweb MCP server questions

What teams ask before putting Similarweb behind an AI client.

Do I need to set up OAuth, or just an API key?

Just a key. In Similarweb, go to Settings → Account, open the API section, choose Standard API / Batch API, click Generate a new API key, and paste the value into the API Key field on the connect form. There is no OAuth redirect, no client secret and no token refresh to keep alive. PopMCP stores the key encrypted and passes it as a query parameter over HTTPS, which is how this API expects to receive it.

Can the agent change anything inside my Similarweb account?

No. Every operation in this catalog reads — there are no create, update or delete calls in it at all, so the most an agent can do is spend data credits pulling reports. The data is Similarweb's own estimate of a public domain, so you point tools at a competitor exactly the way you point them at your own site: no tracking tag, no property verification, and nothing written back either way.

Why do some tools say desktop and others say total?

Similarweb models traffic per device, and the tool names carry that through. Anything ending in total covers desktop plus mobile web — visits_total, bounce_rate_total, pageviews_total, traffic_by_country_total. Referral, marketing-channel, social-referral and organic-keyword-competitor data is desktop-only, while traffic_sources_overview ships in separate desktop and mobile variants. Name the device you want in your prompt, or you will end up holding a desktop channel mix next to a total visit count.

How do I check what my key is actually allowed to pull?

Run check_capabilities. It reports the data credits remaining on the account, which country filters are available to you, and how far back the accessible history goes for each data category. Ranges differ by category, so this is the first thing to look at when a backfill returns less history than you expected.

Does this cover mobile apps as well as websites?

Yes — apps are the biggest module in the catalog. You can pull estimated downloads and active users (MAU/WAU/DAU) for both iOS and Android, app-store rank over time for a given country, category and chart, and publisher metadata such as ratings and category. Most of those calls need a store app id rather than a name, so ask by app name and app_id_lookup resolves the id and publisher first.

What changes can PopMCP watch for on a tracked site?

Triggers cover the metrics people usually find out about too late: traffic dropped, traffic spiked, bounce rate climbed, visitors staying less time, fewer pages per visit, global rank slipped, industry rank moved, and paid search spend jumped. Each one takes a threshold you set — a visit floor, a bounce-rate ceiling, a rank position, a spend line. Cross it and your AI client gets woken up with the reading that broke it.

Do I have to run or host the Similarweb MCP server myself?

No. PopMCP hosts it and gives you a Streamable HTTP MCP URL. There is nothing to deploy, no callback URL to register, and no infrastructure to keep running or patch.

Which AI clients can use this MCP server?

Any client that supports a remote Streamable HTTP MCP server — Claude Desktop, Claude Web, ChatGPT custom connectors, Codex and the Codex CLI, OpenCode and Z.ai's ZCode, as well as editors such as Cursor, Windsurf and Zed. Your client signs in to PopMCP with OAuth; the provider credential never leaves the server.

Why do only 40 of the 125 tools load by default?

Loading 125 tool definitions into every conversation burns context before the work starts. PopMCP loads a curated 40-tool set covering the everyday workflows and keeps the rest searchable, so your AI pulls a specialist tool only when a task needs it. You can switch a connection to the full catalog at any time.

What is the difference between a tool and a trigger?

A tool is something your AI calls — there are 125 here. A trigger is something PopMCP watches for you: 8 Similarweb events that can start work on the PopMCP side. Triggers never enter your AI client's context, and none of them ask you to paste a callback URL into Similarweb.

Connect Similarweb to your AI in minutes

Launch a hosted MCP endpoint for Similarweb, keep tool access under control, and start testing real workflow prompts right away.

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