{ "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-08", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "tool": { "slug": "similarweb", "name": "Similarweb", "vendor": "Similarweb Ltd.", "vendorUrl": "https://www.similarweb.com", "kind": "http-api", "category": "seo", "summary": "Similarweb estimates website and app traffic from panel and other data sources. Its REST and Batch APIs and a hosted MCP server return visits, engagement, traffic channels, keywords and SERP data for a domain, under a paid subscription.", "url": "https://www.anchorterminal.com/tools/similarweb", "markdownUrl": "https://www.anchorterminal.com/tools/similarweb.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/similarweb.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/similarweb.json", "license": "Proprietary service under Similarweb's terms of use", "transports": [ "http" ], "remoteUrl": "https://api.similarweb.com", "packages": [], "auth": "mixed", "authNotes": "A paid subscription with API access is required (Business, Enterprise or the API-only package, bought through sales). An account admin creates keys in the platform under Settings, Account. Requests carry the key in an `api-key` header. Each user can hold up to 3 active keys with no expiry, and admins can deactivate keys and cap credits per user. The MCP server also accepts OAuth through mcp-auth.similarweb.com with dynamic client registration and a single `read` scope, signed in with a Similarweb login.", "pricing": "paid", "pricingNotes": "No public API price. API and MCP access come with Business and Enterprise plans or a standalone API package, all quoted by sales. Usage is metered in data credits that reset monthly. The FAQ says an active subscription with API access is needed to test the API, so no sandbox or free tier was found. Self-serve Web Intelligence plans start at $125 a month billed annually, and the docs say Starter and Professional plans may not include API access (checked 2026-10-08).", "priceSummary": "Paid", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the developer docs or on the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://docs.similarweb.com/api-v5/", "llmsTxt": "https://docs.similarweb.com/api-v5/llms.txt", "capabilities": [ "seo.traffic", "seo.keywords", "seo.serp", "seo.rankings", "lead.enrichment", "data.company" ], "tags": [ "hosted", "paid", "sales-led", "api-key", "oauth", "mcp", "llms-txt", "batch", "webhooks", "soc2" ], "lastRelease": "2026-09-24", "graded": true, "anchor": { "graded": true, "score": 46, "grade": "D", "agentReady": false, "rank": 566, "ranked": true, "rankOf": 629, "categoryRank": 5, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 67, "maintenance": 33, "payments": 5, "reliability": 35, "schema": 63, "security": 52, "transparency": 60 }, "pending": [ "performance", "tasks" ], "breakdown": [ { "key": "reliability", "name": "Reliability", "weight": 16, "effectiveWeight": 20, "score": 35, "points": 7, "reason": "Graded as a hosted service, on the V5 REST API and the hosted MCP server. No public status page found, and similarweb.statuspage.io redirects to a login (0). No readable incident history (5). Rate limits published, 10 requests a second for REST and 20 pending requests for Batch (15). 429 is documented with advice to add a rate limiter and errors aren't charged, but no Retry-After or backoff guidance was found, and Batch has a retry endpoint (5 of 15). The SLA page is dated January 2016 and its PDF returns 404 (0). V5 is announced as live and carries no beta label (10). Total 35." }, { "key": "performance", "name": "Performance", "weight": 10, "effectiveWeight": 0, "pending": true, "points": 0, "reason": "Pending. Latency is measured per call by our probes, which haven't run yet, so this run doesn't score it. Its weight is shared across the assessed categories until the first probe window closes." }, { "key": "schema", "name": "Schema \u0026 documentation", "weight": 13, "effectiveWeight": 16.25, "score": 63, "points": 10.24, "reason": "No public OpenAPI file found. Reference pages carry structured parameter and response definitions in Markdown, and the MCP tool schemas need a key to read (8 of 25). llms.txt on both docs sites with Markdown pages (10). Endpoint pages state purpose, output fields, constraints and credit cost, with little on when not to use one (12 of 20). Parameters are typed with enums for granularity and device, and defaults are stated (12 of 15). Request and response examples exist, and the error table has mismatched descriptions for codes 101 and 102 (9 of 15). Versioned paths and two changelogs, the newer one unreadable to us (12 of 15). Total 63." }, { "key": "ergonomics", "name": "Agent ergonomics", "weight": 13, "effectiveWeight": 16.25, "score": 67, "points": 10.89, "reason": "V5 requests name the metrics wanted and take `limit`, so responses can be sized. The MCP tool count couldn't be read without a key, and the vendor cites more than 75 endpoints (15 of 25). `limit`, `offset`, `sort` and `asc` plus country, date and granularity filters (20). Errors are a short documented table with `error_code` and `error_message` in responses, and 401 is used for data not found (10 of 20). The data endpoints are reads, so retries are safe, and the MCP scope is `read`. Tool annotations unverified (14 of 20). Only `domain` is required on the endpoints read, and no SDKs exist (8 of 15). Total 67." }, { "key": "security", "name": "Security \u0026 auth", "weight": 14, "effectiveWeight": 17.5, "score": 52, "points": 9.1, "reason": "Revocable API keys created by admins, with up to 3 per user, no expiry and credit caps per user, plus OAuth with PKCE and a `read` scope on the MCP server (22 of 30). Less 10 because the capabilities endpoint documents the key in a `?api_key=` query string. Data access is read-only and follows the plan's data sets and countries (14 of 20). No guidance found on untrusted content in returned URLs, keywords and app details (8 of 15). The keys table shows last use and monthly usage per key, and a credit dashboard shows usage by user (8 of 15). SOC 2 Type II and ISO 27001 stated, no security.txt, and the trust centre refused our reader (10 of 20). Total 52." }, { "key": "payments", "name": "Payments \u0026 pricing", "weight": 10, "effectiveWeight": 12.5, "score": 5, "points": 0.63, "reason": "No x402, MPP or L402 found (0). No price per credit or API plan price is public. The credit cost per endpoint and the formula are published, which earns 5 of 20 as a departure from the checklist. No free tier or API trial, since the FAQ requires an active subscription (0). A person has to buy through sales and an admin has to create the key (0). Total 5." }, { "key": "tasks", "name": "Task success", "weight": 10, "effectiveWeight": 0, "pending": true, "points": 0, "reason": "Pending. Task success needs the category task suites run through each tool, which haven't run yet, so this run doesn't score it. Its weight is shared across the assessed categories until then. A data provider's data-quality score is published on its listing now and becomes half of this category when it's scored." }, { "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7, "effectiveWeight": 8.75, "score": 33, "points": 2.89, "reason": "The V5 docs version shows a publish date of 24 September 2026 in the page data, and the migration guide dates the legacy endpoint deprecation at 6 October 2026. This is documentation metadata, not a changelog entry, so 20 of 30. Three dated entries in 90 days not established, because the V5 changelog didn't load (0). Two public changelogs and a help centre with ticket support (8 of 15). No official SDKs, and the official MCP registry lists only third-party Similarweb servers (0). The hosted MCP server and both docs sites are live and current (5 of 10). Total 33." }, { "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7, "effectiveWeight": 8.75, "score": 60, "points": 5.25, "note": "editorial 45, provenance 75", "reason": "Closed service under public terms last updated 19 March 2025 (15 of 30). The privacy policy, amended 30 June 2026, states retention as long as reasonably necessary with no periods, and no public DPA was found (12 of 30). Deprecations carry dates, such as Demographics 1.0 on 1 January 2025 and legacy REST endpoints on 6 October 2026 with a mapping table, but no written notice policy was found (12 of 20). The privacy policy says servers are in the United States, and no sub-processor list was found on the public pages (6 of 20). Total 45." } ], "assessment": { "date": "2026-10-08", "basis": "public evidence", "confidence": "medium", "notes": { "ergonomics": "V5 requests name the metrics wanted and take `limit`, so responses can be sized. The MCP tool count couldn't be read without a key, and the vendor cites more than 75 endpoints (15 of 25). `limit`, `offset`, `sort` and `asc` plus country, date and granularity filters (20). Errors are a short documented table with `error_code` and `error_message` in responses, and 401 is used for data not found (10 of 20). The data endpoints are reads, so retries are safe, and the MCP scope is `read`. Tool annotations unverified (14 of 20). Only `domain` is required on the endpoints read, and no SDKs exist (8 of 15). Total 67.", "maintenance": "The V5 docs version shows a publish date of 24 September 2026 in the page data, and the migration guide dates the legacy endpoint deprecation at 6 October 2026. This is documentation metadata, not a changelog entry, so 20 of 30. Three dated entries in 90 days not established, because the V5 changelog didn't load (0). Two public changelogs and a help centre with ticket support (8 of 15). No official SDKs, and the official MCP registry lists only third-party Similarweb servers (0). The hosted MCP server and both docs sites are live and current (5 of 10). Total 33.", "payments": "No x402, MPP or L402 found (0). No price per credit or API plan price is public. The credit cost per endpoint and the formula are published, which earns 5 of 20 as a departure from the checklist. No free tier or API trial, since the FAQ requires an active subscription (0). A person has to buy through sales and an admin has to create the key (0). Total 5.", "reliability": "Graded as a hosted service, on the V5 REST API and the hosted MCP server. No public status page found, and similarweb.statuspage.io redirects to a login (0). No readable incident history (5). Rate limits published, 10 requests a second for REST and 20 pending requests for Batch (15). 429 is documented with advice to add a rate limiter and errors aren't charged, but no Retry-After or backoff guidance was found, and Batch has a retry endpoint (5 of 15). The SLA page is dated January 2016 and its PDF returns 404 (0). V5 is announced as live and carries no beta label (10). Total 35.", "schema": "No public OpenAPI file found. Reference pages carry structured parameter and response definitions in Markdown, and the MCP tool schemas need a key to read (8 of 25). llms.txt on both docs sites with Markdown pages (10). Endpoint pages state purpose, output fields, constraints and credit cost, with little on when not to use one (12 of 20). Parameters are typed with enums for granularity and device, and defaults are stated (12 of 15). Request and response examples exist, and the error table has mismatched descriptions for codes 101 and 102 (9 of 15). Versioned paths and two changelogs, the newer one unreadable to us (12 of 15). Total 63.", "security": "Revocable API keys created by admins, with up to 3 per user, no expiry and credit caps per user, plus OAuth with PKCE and a `read` scope on the MCP server (22 of 30). Less 10 because the capabilities endpoint documents the key in a `?api_key=` query string. Data access is read-only and follows the plan's data sets and countries (14 of 20). No guidance found on untrusted content in returned URLs, keywords and app details (8 of 15). The keys table shows last use and monthly usage per key, and a credit dashboard shows usage by user (8 of 15). SOC 2 Type II and ISO 27001 stated, no security.txt, and the trust centre refused our reader (10 of 20). Total 52.", "transparency": "Closed service under public terms last updated 19 March 2025 (15 of 30). The privacy policy, amended 30 June 2026, states retention as long as reasonably necessary with no periods, and no public DPA was found (12 of 30). Deprecations carry dates, such as Demographics 1.0 on 1 January 2025 and legacy REST endpoints on 6 October 2026 with a mapping table, but no written notice policy was found (12 of 20). The privacy policy says servers are in the United States, and no sub-processor list was found on the public pages (6 of 20). Total 45." }, "sources": [ { "what": "V5 docs index (llms.txt)", "url": "https://docs.similarweb.com/api-v5/llms.txt", "seen": "2026-10-08" }, { "what": "V5 authentication", "url": "https://docs.similarweb.com/api-v5/getting-started/authentication.md", "seen": "2026-10-08" }, { "what": "V5 first request", "url": "https://docs.similarweb.com/api-v5/getting-started/making-your-first-request.md", "seen": "2026-10-08" }, { "what": "data credits", "url": "https://docs.similarweb.com/api-v5/guides/data-credits-calculations.md", "seen": "2026-10-08" }, { "what": "error codes", "url": "https://docs.similarweb.com/api-v5/guides/error-handling-and-troubleshooting.md", "seen": "2026-10-08" }, { "what": "FAQ with rate limits, freshness, SDKs and trial", "url": "https://docs.similarweb.com/api-v5/support-and-faq/faq.md", "seen": "2026-10-08" }, { "what": "capabilities endpoint with key in query string", "url": "https://docs.similarweb.com/api-v5/support-and-faq/check-capabilities.md", "seen": "2026-10-08" }, { "what": "legacy endpoint migration and deprecation date", "url": "https://docs.similarweb.com/api-v5/guides/rest-api-data-version-migration.md", "seen": "2026-10-08" }, { "what": "MCP setup and tool list", "url": "https://docs.similarweb.com/api-v5/similarweb-mcp/mcp-setup.md", "seen": "2026-10-08" }, { "what": "MCP Claude connector, access by plan", "url": "https://docs.similarweb.com/api-v5/similarweb-mcp/available-integrations/claude-integration.md", "seen": "2026-10-08" }, { "what": "MCP Cursor config", "url": "https://docs.similarweb.com/api-v5/similarweb-mcp/available-integrations/cursor-integration.md", "seen": "2026-10-08" }, { "what": "MCP OAuth resource metadata", "url": "https://mcp.similarweb.com/.well-known/oauth-protected-resource", "seen": "2026-10-08" }, { "what": "MCP OAuth server metadata", "url": "https://mcp-auth.similarweb.com/.well-known/oauth-authorization-server", "seen": "2026-10-08" }, { "what": "traffic and engagement reference", "url": "https://docs.similarweb.com/api-v5/api-reference/website-analysis-api/website-performance/traffic-and-engagement.md", "seen": "2026-10-08" }, { "what": "website keywords reference", "url": "https://docs.similarweb.com/api-v5/api-reference/search-analysis-api/website-keywords.md", "seen": "2026-10-08" }, { "what": "V4 docs index with Rank Tracking API", "url": "https://developers.similarweb.com/llms.txt", "seen": "2026-10-08" }, { "what": "V4 changelog", "url": "https://developers.similarweb.com/changelog", "seen": "2026-10-08" }, { "what": "pricing", "url": "https://www.similarweb.com/corp/pricing/", "seen": "2026-10-08" }, { "what": "API product page", "url": "https://www.similarweb.com/corp/daas/api/", "seen": "2026-10-08" }, { "what": "terms", "url": "https://www.similarweb.com/corp/legal/terms/", "seen": "2026-10-08" }, { "what": "privacy policy", "url": "https://www.similarweb.com/corp/legal/privacy-policy/", "seen": "2026-10-08" }, { "what": "privacy and security page", "url": "https://www.similarweb.com/corp/privacy-security/", "seen": "2026-10-08" }, { "what": "SLA page", "url": "https://www.similarweb.com/corp/legal/sla/", "seen": "2026-10-08" }, { "what": "status host redirecting to login", "url": "https://similarweb.statuspage.io/", "seen": "2026-10-08" }, { "what": "official MCP registry search", "url": "https://registry.modelcontextprotocol.io/v0/servers?search=similarweb", "seen": "2026-10-08" }, { "what": "RDAP", "url": "https://rdap.verisign.com/com/v1/domain/similarweb.com", "seen": "2026-10-08" } ], "openQuestions": [ "unchecked: MCP tool definitions, tool count and annotations, which need a subscription key to list", "unchecked: the V5 changelog entries at https://docs.similarweb.com/changelog/similarweb/api-v5, which load in the browser and didn't reach our reader", "unchecked: https://trustcenter.similarweb.com/ answered with a bot check, so the DPA, sub-processor list and any disclosure policy there weren't read", "unchecked: whether the legacy REST endpoints stopped answering on 6 October 2026 as the migration guide says", "No dollar price per data credit or for the API-only package was found on public pages", "The privacy and security page links bugcrowd.com in its markup with no programme named, so no bug bounty is recorded", "Rank tracking endpoints appear in the V4 reference only, and no V5 replacement was found in the V5 index" ] }, "negative": 0, "verdict": "The V5 API returns traffic estimates, keyword clicks and SERP positions with selectable metrics, and the hosted MCP server accepts OAuth with a read scope. Access needs a Business, Enterprise or API-only subscription sold through sales, with no API trial, public price per credit or public status page found.", "bestFor": "Traffic and engagement estimates, traffic channel mix and keyword click data for domains an agent doesn't own, with app, company and retail data on the same key.", "strengths": [ "Hosted MCP server at https://mcp.similarweb.com accepts an `api-key` header or OAuth, with dynamic client registration and one `read` scope", "V5 endpoints take a `metrics` list, so one request returns only the fields asked for, and each result costs one data credit", "Keyword endpoints cost one credit per 100 results, and errors and empty responses aren't charged, per the data credits guide", "Both documentation sites publish llms.txt and a Markdown copy of every page", "Admins can cap credits per user and deactivate keys, and the keys table shows last use and monthly usage per key" ], "weaknesses": [ "API and MCP access need a Business, Enterprise or API-only plan bought through sales. The FAQ says there's no API test without a subscription", "No public status page found. similarweb.statuspage.io redirects to a Statuspage login", "No public OpenAPI file or official SDK found. The FAQ answers the SDK question by saying any HTTP client works", "No backlink endpoint in the V5 or V4 API reference, although the website lists a Backlink Analytics product", "The SLA page is dated January 2016 and its linked PDF returns 404" ], "agentNotes": [ "Send the key in the `api-key` header. The capabilities endpoint documents `?api_key=` in the URL, which puts the secret in logs", "Stay under 10 requests a second. A 429 can also mean the monthly credit allowance is spent, so call `/capabilities` (free) before retrying", "Pass domains in lower case without `www.` or a path. The docs list 401 as data not found for a malformed domain", "Request only the metrics, countries and months needed. Credits multiply across domains, metrics, countries and periods, and daily granularity costs about 30 times monthly", "Website keywords accept monthly granularity for the last three months only, and `position` isn't returned for worldwide" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 46 } ], "editorialScores": { "ergonomics": 67, "maintenance": 33, "payments": 5, "reliability": 35, "schema": 63, "security": 52, "transparency": 45 }, "provenanceScore": 75 }, "connect": { "http": "curl -G \"https://api.similarweb.com/v5/website-analysis/websites/traffic-and-engagement\" \\\n -H \"api-key: $SIMILARWEB_API_KEY\" \\\n -d \"domain=nike.com\" -d \"metrics=visits,bounce_rate,pages_per_visit\" \\\n -d \"granularity=monthly\" -d \"start_date=2024-10-01\" -d \"end_date=2024-12-31\"", "config": { "mcpServers": { "similarweb-traffic-mcp": { "args": [ "-y", "mcp-remote@latest", "https://mcp.similarweb.com", "--header", "api-key:YOUR_API_KEY" ], "command": "npx" } } } }, "letme": { "capability": "https://letme.dev/seo.traffic", "tool": "https://letme.dev/similarweb" }, "notable": [ "Hosted MCP server at https://mcp.similarweb.com. An unauthenticated request returns 401 asking for an `api-key` header or a Bearer token, and https://mcp.similarweb.com/.well-known/oauth-protected-resource names https://mcp-auth.similarweb.com as the authorisation server with one scope, `read`", "The MCP guide lists traffic and engagement, traffic sources, website rank, referrals, geography, demographics, SERP players, SERP clicks, keywords overview and website keywords among its tools, and says MCP calls spend the same data credits as API calls (https://docs.similarweb.com/api-v5/similarweb-mcp/mcp-setup)", "Data credits follow domains x endpoint cost x granularity x countries x periods x results. Most endpoints cost 1 credit per result and keyword endpoints 1 credit per 100 results. Errors, empty responses and `/capabilities` are free (https://docs.similarweb.com/api-v5/guides/data-credits-calculations)", "REST is limited to 10 requests a second per account and Batch to 20 pending requests per user. Daily data arrives within 72 hours and monthly data by the 10th of the next month (https://docs.similarweb.com/api-v5/support-and-faq/faq)", "The migration guide says the legacy REST endpoints in its mapping table are deprecated on 6 October 2026 and maps each to a V5 replacement, with some segment endpoints marked coming soon (https://docs.similarweb.com/api-v5/guides/rest-api-data-version-migration)", "API access is sold with Business and Enterprise plans or as a standalone API package through sales. Self-serve Web Intelligence plans start at $125 a month billed annually (https://www.similarweb.com/corp/pricing/)", "SOC 2 Type II and ISO 27001 are stated on https://www.similarweb.com/corp/privacy-security/. www.similarweb.com/.well-known/security.txt returns 404" ], "area": "web-data", "details": [ { "label": "APIs", "value": "REST API V5 at https://api.similarweb.com/v5/ (117 reference pages in the V5 index, covering website, search, app, company, Amazon, cross-retail and generative AI data). Batch API at https://api.similarweb.com/batch/v4/ for reports of up to 1 million domains. Rank Tracking API under /v4/rank-tracker/" }, { "label": "MCP server", "value": "Hosted at https://mcp.similarweb.com. `api-key` header or OAuth (authorisation code with PKCE, refresh tokens, dynamic client registration, revocation endpoint, scope `read`). Vendor guides for Claude, ChatGPT, Cursor, Microsoft Copilot and Perplexity" }, { "label": "SEO data", "value": "Traffic and engagement (visits, bounce rate, pages per visit, visit duration, page views, unique visitors), traffic channels, referrals, geography, website rank, website keywords (clicks, traffic share, position, top URL, intent), keywords overview (volume, CPC, difficulty), SERP players and landing pages. No backlink endpoint found" }, { "label": "Credentials", "value": "API keys created by account admins, up to 3 active per user, no expiry, activation toggle, credit limits per user. V5 uses one key for REST and Batch" }, { "label": "Rate limits", "value": "REST 10 requests a second per account. Batch 20 pending requests per user. Exceeding the monthly credit allowance also returns 429" }, { "label": "Errors", "value": "401 data not found (REST) or unauthorised (Batch), 403 invalid key or no credits, 429 too many requests, 101 dates not in range, 102 granularity not supported, 103 country not available, 500 internal error (Batch). Responses carry `status`, `error_code` and `error_message` in `meta`" }, { "label": "Pagination", "value": "`limit` (default 100), `offset`, `sort` and `asc` on aggregated endpoints, plus `metrics`, `country`, `granularity`, `web_source`, `start_date` and `end_date`" }, { "label": "Data freshness", "value": "Daily data within 72 hours, monthly data by the 10th of the following month, no real-time data, per the FAQ. Each response carries `last_updated`" }, { "label": "Billing", "value": "Data credits, reset monthly with no rollover. 1 credit per result on most endpoints, 1 per 100 results on keyword endpoints. Price per credit is not published" }, { "label": "SDKs", "value": "None found. The FAQ says the API works with any HTTP client. Add-ons exist for Google Sheets, Excel and Looker Studio" }, { "label": "Certifications", "value": "SOC 2 Type II and ISO 27001 per https://www.similarweb.com/corp/privacy-security/" }, { "label": "Status", "value": "No public status page found. similarweb.statuspage.io redirects to a login" } ], "provenance": { "legalEntity": "Similarweb Ltd.", "domain": "similarweb.com", "domainRegistered": "2008-04-10", "endpointOnVendorDomain": true, "terms": "https://www.similarweb.com/corp/legal/terms/", "privacy": "https://www.similarweb.com/corp/legal/privacy-policy/", "statusPage": "", "changelog": "https://docs.similarweb.com/changelog/similarweb/api-v5", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The terms (last updated 19 March 2025) name Similarweb Ltd., 121 Menachem Begin Road, Tel Aviv, as the contracting company and DMCA agent. The privacy policy (last amended 30 June 2026) lists Similarweb Ltd. (Israel), Similarweb Inc. (Delaware) and Similarweb UK Ltd. among group companies.", "The API answers at api.similarweb.com and the MCP server at mcp.similarweb.com, with OAuth at mcp-auth.similarweb.com.", "www.similarweb.com/.well-known/security.txt returns 404.", "similarweb.statuspage.io redirects to a Statuspage login, so no public status page is recorded.", "The V5 changelog page loads its entries in the browser and we couldn't read them. The older changelog at developers.similarweb.com/changelog is readable.", "https://www.similarweb.com/corp/legal/sla/ is dated January 2016 and links a PDF that returns 404.", "RDAP for similarweb.com gives a registration date of 2008-04-10." ], "score": 75, "checks": [ { "check": "Legal entity named", "value": "Similarweb Ltd.", "points": 20, "max": 20, "state": "ok" }, { "check": "Domain age", "value": "similarweb.com, registered 2008-04-10 (18 years)", "points": 15, "max": 15, "state": "ok" }, { "check": "Endpoint on the vendor's domain", "value": "api.similarweb.com", "points": 15, "max": 15, "state": "ok" }, { "check": "Terms of service", "value": "read, states 6 of the 7 things a reader expects, and has 2 clauses that cost points", "points": 5.1, "max": 10, "state": "part" }, { "check": "Privacy policy", "value": "read, states 8 of the 8 things a reader expects", "points": 10, "max": 10, "state": "ok" }, { "check": "Status page", "value": "not found", "points": 0, "max": 10, "state": "no" }, { "check": "Changelog", "value": "published", "points": 10, "max": 10, "state": "ok" }, { "check": "security.txt", "value": "not found", "points": 0, "max": 10, "state": "no" } ], "policies": [ { "kind": "terms", "url": "https://www.similarweb.com/corp/legal/terms/", "state": "read", "readAt": "2026-10-08", "statedDate": "2025-03-19", "words": 6650, "points": 5.1, "max": 10, "expected": [ { "key": "terms.date", "label": "Gives the date it was last updated", "found": true, "quote": "Last updated: March 19, 2025", "says": "Last updated 2025-03-19" }, { "key": "terms.law", "label": "Names the governing law or courts", "found": true, "quote": "These Terms and any disputes between you and Similarweb shall be governed by the laws of the State of Israel, without reference to its conflict of laws rules.23.2.", "says": "The law of the State of Israel" }, { "key": "terms.liability", "label": "States a limit on its liability", "found": true, "quote": "IN NO EVENT SHALL THE AGGREGATE LIABILITY OF SIMILARWEB, ITS AFFILIATES OR ITS THIRD-PARTY PROVIDERS, UNDER, OR OTHERWISE IN CONNECTION WITH, THESE TERMS (INCLUDING THE SITE AND THE PLATFORM), EXCEED THE TOTAL AMOUNT OF FEES ACTUALLY PAID BY YOU (IF ANY) IN THE SIX (6) MONTHS IMMEDIATELY PRIOR TO THE EVENT GIVING RISE…", "says": "Capped at the fees paid in the 6 months before the claim" }, { "key": "terms.termination", "label": "Says how the agreement or account can be ended", "found": true, "quote": "Similarweb may terminate your Subscription to the Platform and/or Applications at any time and without prior written notice in any case where it believes that you or your Organization have breached these Terms." }, { "key": "terms.changes", "label": "Says how changes to the terms are announced", "found": true, "quote": "Such change will be effective ten (10) days following our sending a notice thereof to you or posting the revised Terms on the Site, and your continued use of the Site and/or Platform thereafter means that you accept those changes.", "says": "Gives ten days of notice before a change" }, { "key": "terms.use", "label": "Lists what users may not do", "found": true, "quote": "You may not access and use the Platform if you are, and you represent and warrant that you are not, a competitor of Similarweb." }, { "key": "terms.sla", "label": "Refers to a service level or uptime commitment", "found": false } ], "toKnow": [ { "key": "terms.automated", "label": "Restricts automated access", "found": true, "quote": "(v) use any robot, spider, scraper, or other automated means to access or monitor the Platform, Site or Applications for any purpose, or to copy, access, collect, download, or otherwise obtain data, content or other information from the Platform, Site or Applications;", "costsPoints": true }, { "key": "terms.benchmark", "label": "Restricts benchmarking or competitive use", "found": true, "quote": "(x) use the Platform, Site or Applications to develop, offer, operate, support or enable a competing service or product;", "costsPoints": true }, { "key": "terms.cutoff", "label": "Says access can be ended without notice or for any reason", "found": true, "quote": "Similarweb may terminate your Subscription to the Platform and/or Applications at any time and without prior written notice in any case where it believes that you or your Organization have breached these Terms." } ], "notes": [ { "date": "2026-10-08", "text": "Data received through the platform may not be presented or shared without the vendor's prior consent, and with consent it must carry attribution to the vendor.", "quote": "(iv) present or share the data or information received through the Platform without Similarweb’s prior consent, and in the event such consent was given, present or share such data or information without attribution to Similarweb pursuant to Similarweb’s branding guidelines;" }, { "date": "2026-10-08", "text": "When a customer registers through a third-party account such as Google, the vendor uses analytics information about the customer's sites and apps, in aggregate, to improve its algorithms.", "quote": "In that event, we will access and use some of that information, on an aggregated basis with similar information received from other organizations regarding their sites and apps, in order to improve our algorithms." }, { "date": "2026-10-08", "text": "The vendor's total liability is capped at the fees paid in the six months before the event giving rise to it.", "quote": "EXCEED THE TOTAL AMOUNT OF FEES ACTUALLY PAID BY YOU (IF ANY) IN THE SIX (6) MONTHS IMMEDIATELY PRIOR TO THE EVENT GIVING RISE TO SUCH LIABILITY." } ] }, { "kind": "privacy", "url": "https://www.similarweb.com/corp/legal/privacy-policy/", "state": "read", "readAt": "2026-10-08", "statedDate": "2026-06-30", "words": 6074, "points": 10, "max": 10, "expected": [ { "key": "privacy.date", "label": "Gives the date it was last updated", "found": true, "quote": "Last Amended: June 30, 2026", "says": "Last updated 2026-06-30" }, { "key": "privacy.collected", "label": "Says what personal data is collected", "found": true, "quote": "We provide this policy (“Privacy Policy”) to make you aware of how we collect and use information pertaining to your use of similarweb.com (our “Website”) as well as the Similarweb solutions and services described or accessed by you through our Website (our “Services”)." }, { "key": "privacy.retention", "label": "Says how long data is kept", "found": true, "quote": "We will store your Personal Information for as long as is reasonably necessary for the purposes for which it was collected, as explained in this Privacy Policy." }, { "key": "privacy.processors", "label": "Says who else receives the data", "found": true, "quote": "We may disclose Personal Information we collect to our service providers, processors, and vendors who perform functions on our behalf to allow us to provide the Services." }, { "key": "privacy.sale", "label": "Says whether personal data is sold or shared for advertising", "found": true, "quote": "We do not sell or share sensitive Personal Information, nor do we sell or share any Personal Information about individuals who we know are under sixteen (16) years old.", "says": "Says it does not sell personal data" }, { "key": "privacy.rights", "label": "Says what rights people have over their data", "found": true, "quote": "If you are a citizen of the State of Israel, you have the right to access, review and correct the Personal Information that we have processed about you at any time, as further explained in Section 10 (“Rights of Users in Certain Jurisdictions”) below." }, { "key": "privacy.contact", "label": "Gives a privacy contact", "found": true, "quote": "You also have the right to ask Similarweb to amend any Personal Information it holds about you if it is inaccurate or misleading by emailing our Data Protection Officer at dpo@similarweb.com or privacy@similarweb.com.", "says": "dpo@similarweb.com" }, { "key": "privacy.transfers", "label": "Says where data is transferred or stored", "found": true, "quote": "This may include the EU standard contractual clauses or the UK international data transfer agreement.", "says": "Relies on standard contractual clauses" } ], "toKnow": [ { "key": "privacy.sells", "label": "Says it sells personal data or shares it for advertising", "found": true, "quote": "We sell such categories of Personal Data to our business customers so that they may conduct their own analysis on consumer behaviours and analyze and improve their marketing and advertising campaigns." } ] } ] }, "pageJsonUrl": "https://www.anchorterminal.com/tools/similarweb.json", "live": { "slug": "similarweb", "probe": { "target": "https://api.similarweb.com", "method": "get", "lastAt": "2026-10-08T17:36:45.404871234Z", "lastOk": true, "lastStatus": 404, "lastMs": 159, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 159, "p95ms24h": 275, "samples24h": 25, "samples30d": 25, "days": [ { "date": "2026-10-08", "probes": 25, "ok": 25 } ] }, "securityTxt": { "url": "https://similarweb.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-08T15:39:03.862346608Z" }, "updatedAt": "2026-10-08T17:36:45.404871234Z" } } }