{ "data": { "a": { "slug": "majestic", "name": "Majestic API", "vendor": "Majestic (Majestic-12 Limited)", "vendorUrl": "https://majestic.com", "kind": "http-api", "category": "seo", "summary": "Majestic crawls the web and sells backlink data. Its HTTP API returns backlinks, referring domains, anchor text, Trust Flow and Citation Flow scores and keyword counts from a Fresh and a Historic index, as XML or JSON.", "url": "https://www.anchorterminal.com/tools/majestic", "markdownUrl": "https://www.anchorterminal.com/tools/majestic.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/majestic.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/majestic.json", "repo": "https://github.com/majestic/Python3-API-Connector", "license": "Proprietary service under Majestic's Terms and Conditions. The Python 3 connector on GitHub carries a BSD-style licence file", "transports": [ "http" ], "remoteUrl": "https://api.majestic.com", "packages": [], "auth": "api-key", "authNotes": "An API key, sent as the `app_api_key` parameter by POST or GET, or as a cookie on GET requests. Keys are created under My Account, API Keys, and only on an API plan or the legacy Platinum plan. An account can hold several keys, each of which can be disabled and limited to IP addresses or CIDR ranges. Keys have no scopes. Third-party apps use OpenApps instead, where each user approves the app once and the app sends its private key with that user's access token. Resale of the data needs a reseller agreement through sales.", "pricing": "paid", "pricingNotes": "API access needs the API plan, $399.99 a month or $3,999.90 a year for 100 million analysis units, 20 million retrieval units and 500,000 index item units a month. The 300 million tier is $799.99 a month and the 1,000 million tier $1,599.99. Lite ($49.99) and Pro ($99.99) have no API access. No trial or free API key was found, and the 7-day refund covers Lite and Pro only. A sandbox endpoint costs no units but needs a key from a paid API plan. Prices exclude VAT (checked 2026-10-09).", "priceSummary": "$399.99 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the developer docs, either llms.txt or the pricing page (checked 2026-10-09).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 3, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-09" }, "docsUrl": "https://developer-support.majestic.com/", "llmsTxt": "https://developer-support.majestic.com/llms.txt", "capabilities": [ "seo.backlinks", "seo.keywords" ], "tags": [ "official", "hosted", "api-key", "closed-source", "plan-only", "llms-txt", "xml", "sandbox", "ip-allowlist", "backlinks" ], "graded": true, "anchor": { "graded": true, "score": 33.4, "grade": "F", "agentReady": false, "rank": 937, "ranked": true, "rankOf": 950, "categoryRank": 10, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 54, "maintenance": 22, "payments": 15, "reliability": 17, "schema": 44, "security": 32, "transparency": 53 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-09" }, "negative": 0, "verdict": "Each command's cost in units is published and a sandbox endpoint returns sample data without spending allowance. API access starts at $399.99 a month with no trial, and no OpenAPI file, status page, numeric rate limit, SLA or API changelog was found. The supply terms require permission before querying with automated tools.", "bestFor": "An agent that needs backlink, referring domain, anchor text and Trust Flow data in volume for an owner who already pays for the API plan.", "strengths": [ "Every command page states its cost in analysis units, and `GetSubscriptionInfo` returns the remaining allowances at no cost", "A sandbox endpoint at `developer.majestic.com` answers the same commands from a reduced Historic data set without spending allowance", "Several API keys per account, each of which can be disabled and limited to IPv4 addresses or CIDR ranges, with an IP activity page per key", "`GetIndexItemInfo` takes up to 100 items a call and `GetKeywordInfo` up to 1,000 keywords, and `GetBackLinkData` has `Count`, `From`, sorting and a `Filters` expression", "Both docs hosts publish an `llms.txt`, and the developer one (dated 26 January 2026) links an `llms-full.txt` of all 39 pages" ], "weaknesses": [ "Clause 14.1(f) of the supply terms forbids querying Majestic's database or servers with automated tools without prior permission. This matters before any probe is run", "API access needs the API plan, from $399.99 a month for 100 million analysis units. No trial or free key was found, and the 7-day refund covers Lite and Pro only", "No OpenAPI file, no API version and no API changelog were found. Sample responses in the docs carry 2017 index dates", "No status page, SLA or numeric rate limit was found. The terms allow throttling at Majestic's discretion and disclaim liability for unavailability", "The docs show the key as an `app_api_key` URL parameter and say plain HTTP is still accepted for legacy clients", "The connectors on GitHub were last updated between March 2016 and September 2021 and are not on a package registry" ], "agentNotes": [ "Send requests by HTTPS POST with `app_api_key` in the body. The docs show GET URLs for demonstration only and plain HTTP still works", "Always set `datasource=fresh` or `datasource=historic`. Without it the Historic Index is used when the plan includes it", "Call `GetSubscriptionInfo` (no cost) before a large pull. `GetBackLinkData` spends 5,000 analysis units a call plus one retrieval unit a row", "Read columns by header name, not position. The docs say column order can change between requests and Majestic may vary rows and columns at any time", "Develop against `https://developer.majestic.com/api/json`, which costs no units, then switch the host to `api.majestic.com`", "Ask the owner to confirm Majestic's permission for automated querying first. Clause 14.1(f) of the terms requires it" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "F", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 33.4 } ], "editorialScores": { "ergonomics": 54, "maintenance": 22, "payments": 15, "reliability": 17, "schema": 44, "security": 32, "transparency": 43 }, "provenanceScore": 63 }, "connect": { "http": "curl -X POST 'https://developer.majestic.com/api/json' -d 'app_api_key=API_KEY' -d 'cmd=GetIndexItemInfo' -d 'items=1' -d 'item0=majestic.com' -d 'datasource=fresh'" }, "letme": { "capability": "https://letme.dev/seo.backlinks", "tool": "https://letme.dev/majestic" }, "area": "web-data", "unitPrices": [ { "item": "API plan, 100 million analysis units a month", "unit": "month", "usd": 399.99, "note": "with 20 million retrieval units and 500,000 index item units. $3,999.90 billed annually. Excludes VAT" }, { "item": "API plan, 300 million analysis units a month", "unit": "month", "usd": 799.99, "note": "$7,999.90 billed annually. Excludes VAT" }, { "item": "API plan, 1,000 million analysis units a month", "unit": "month", "usd": 1599.99, "note": "$15,999.90 billed annually. Excludes VAT" }, { "item": "GetBackLinkData, per call", "unit": "call", "usd": 0.02, "note": "our arithmetic. 5,000 of the 100 million analysis units in the $399.99 plan, before retrieval units for rows returned" } ], "provenance": { "legalEntity": "Majestic-12 Limited", "domain": "majestic.com", "domainRegistered": "2001-05-03", "endpointOnVendorDomain": true, "terms": "https://majestic.com/company/terms", "privacy": "https://majestic.com/company/privacy-policy", "statusPage": "", "changelog": "", "securityTxt": "none", "checked": "2026-10-09", "notes": [ "The Terms and Conditions (released 13 April 2026) are one page holding the Terms of Website Use, the Acceptable Use Policy and the Terms and Conditions of Supply. The last of these is the subscription contract and names Majestic-12 Limited, company number 05269210, of iCentrum, Holt Street, Birmingham.", "No API-specific terms were found. The supply terms still name Free, Silver, Gold and Platinum subscription levels, which are not the plans on the pricing page.", "The privacy policy applies from 3 May 2019 and says it was last updated in April 2026. It names Majestic-12 Limited as controller.", "The API answers at api.majestic.com and the sandbox at developer.majestic.com.", "majestic.com/.well-known/security.txt returned 404.", "No status page is linked from the site footer, the developer docs or either llms.txt. Site updates are behind the account login.", "RDAP for majestic.com gives a registration date of 2001-05-03.", "majestic.com/robots.txt disallows /business/ for unnamed agents and carries no Content-Signal line. developer-support.majestic.com has no robots.txt (404)." ], "score": 63 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/majestic.json", "live": { "slug": "majestic", "probe": { "target": "https://api.majestic.com", "method": "get", "lastAt": "2026-10-10T03:53:33.451870341Z", "lastOk": true, "lastStatus": 403, "lastMs": 30, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 34, "p95ms24h": 106, "samples24h": 125, "samples30d": 125, "days": [ { "date": "2026-10-09", "probes": 85, "ok": 85 }, { "date": "2026-10-10", "probes": 40, "ok": 40 } ] }, "githubStars": 3, "pages": [ { "url": "https://majestic.com/company/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-09T18:41:42.95940596Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "1a06eaa10f9e" }, { "url": "https://majestic.com/company/terms", "kind": "terms", "status": 200, "checkedAt": "2026-10-09T18:41:45.030991177Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "0812670ad36f" } ], "updatedAt": "2026-10-10T03:53:33.451870341Z" } }, "answer": "Semrush API + MCP scores 53.1 (D) on agent readiness against Majestic API's 33.4 (F), and leads in every scored category.", "b": { "slug": "semrush", "name": "Semrush API + MCP", "vendor": "Semrush Inc. (an Adobe company)", "vendorUrl": "https://www.semrush.com", "kind": "http-api", "category": "seo", "summary": "Semrush is a search marketing data platform, owned by Adobe since April 2026. Agents reach its keyword, backlink, ranking and traffic data through REST APIs with API keys or a hosted MCP server that spends the same API units.", "url": "https://www.anchorterminal.com/tools/semrush", "markdownUrl": "https://www.anchorterminal.com/tools/semrush.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/semrush.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/semrush.json", "license": "Proprietary service under the Semrush terms of service", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.semrush.com", "packages": [], "auth": "mixed", "authNotes": "Version 4 methods take an API key in `Authorization: Apikey \u003ckey\u003e`, created in the profile with a read-only or read and write permission and an optional expiry. Version 3 methods take the account's single key as the `key` query parameter. The MCP server signs in by OAuth 2.1 against the user's Semrush account, or takes the API key header. Access is self-serve for a paying account, with no app review. Trends Premium and custom plans go through sales.", "pricing": "paid", "pricingNotes": "Every API needs a paid subscription, and calls spend API units. The Standard API needs the SEO Business plan plus a unit package of 2 to 20 million units, whose prices aren't on a public page. The MCP page says Semrush One Starter and Pro+ and SEO Classic Pro and Guru include 50,000 units. Our request saw plan prices in pounds, from £113 a month for SEO to £444 for Advanced. The free plan (no card, 10 reports a day) has no API units, and the 7-day trial's card requirement wasn't checked.", "priceSummary": "Paid", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the developer docs, the MCP page or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": 14, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://developer.semrush.com/api/", "llmsTxt": "https://developer.semrush.com/api/llms.txt", "capabilities": [ "seo.keywords", "seo.backlinks", "seo.rankings", "seo.traffic", "seo.serp" ], "tags": [ "official", "hosted", "mcp", "oauth", "api-key", "llms-txt", "closed-source", "subscription", "usage-units", "bug-bounty", "adobe" ], "lastRelease": "2026-09-04", "graded": true, "anchor": { "graded": true, "score": 53.1, "grade": "D", "agentReady": false, "rank": 721, "ranked": true, "rankOf": 950, "categoryRank": 4, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 77, "maintenance": 57, "payments": 17, "reliability": 34, "schema": 70, "security": 54, "transparency": 67 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "The hosted MCP server exposes 14 tools that load a report's parameters on demand, and version 4 API keys can be read-only, time-limited and revoked. Most reports still sit in version 3, whose single key travels in the URL and can't be revoked. No status page, OpenAPI file or API unit price was found.", "bestFor": "Teams already paying for Semrush who want an agent to pull keyword, backlink, ranking and traffic estimates in one place, mainly through the MCP server.", "strengths": [ "Hosted MCP server at mcp.semrush.com/v2/mcp with OAuth 2.1, dynamic client registration and 14 named tools, limited to reads", "Version 4 keys can be read-only or read and write, carry an expiry, and be revoked. An account can hold up to 100", "Every method page states its cost in API units, and `limit`, `fields` and `filter` cap what a call spends", "llms.txt indexes for the developer site and for each API version, with dated release notes since March 2026", "API Query log records time, IP address, report type and units spent for SEO API and Projects v4 calls, with CSV export" ], "weaknesses": [ "Domain, URL, Trends, Position Tracking and Site Audit reports are version 3 only, where the one key is a URL parameter and can't be revoked", "Version 4 Keyword and Backlinks reports are labelled Early Access, with endpoints, formats and pricing subject to change", "No public status page, SLA terms, OpenAPI file or official SDK found in the reviewed pages", "API unit package prices aren't published, and every API needs a paid subscription", "When units run short, per-line SEO and Trends reports return fewer lines instead of an error" ], "agentNotes": [ "Use the MCP server at https://mcp.semrush.com/v2/mcp where the host supports it. Call a discovery tool, then `get_report_schema`, then `execute_report`", "Set `limit` or `display_limit` on every per-line report. A backlinks row costs 40 to 45 units and a historical keyword row 50", "Check the unit balance before large pulls. A per-line report returns only the lines the balance covers, with no error", "Send the version 4 key as `Authorization: Apikey \u003ckey\u003e`, never as `?key=`. Version 3 accepts only the query parameter, so keep those URLs out of logs", "Stay under 10 requests a second and 10 concurrent requests per account, and retry only when `error.retryable` is true" ], "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": 53.1 } ], "editorialScores": { "ergonomics": 77, "maintenance": 57, "payments": 17, "reliability": 34, "schema": 70, "security": 54, "transparency": 59 }, "provenanceScore": 75 }, "connect": { "http": "curl -H 'Authorization: Apikey YOUR_API_KEY' \"https://api.semrush.com/apis/v4/keywords/v1/metrics?keyword=seo%20tools\u0026country=US\"", "claudeCode": "claude mcp add semrush https://mcp.semrush.com/v2/mcp -t http", "config": { "mcpServers": { "semrush": { "url": "https://mcp.semrush.com/v2/mcp" } } } }, "letme": { "capability": "https://letme.dev/seo.keywords", "tool": "https://letme.dev/semrush" }, "area": "web-data", "provenance": { "legalEntity": "Semrush Inc.", "domain": "semrush.com", "domainRegistered": "2008-10-03", "endpointOnVendorDomain": true, "terms": "https://www.semrush.com/company/legal/terms-of-service/", "privacy": "https://www.semrush.com/company/legal/privacy-policy/", "statusPage": "", "changelog": "https://developer.semrush.com/api/v4/introduction/release-notes/", "securityTxt": "none", "checked": "2026-10-08", "notes": [ "The terms of service (last updated 25 August 2026) name Semrush Inc., a Delaware corporation at 800 Boylston Street, Suite 2475, Boston, MA 02199. The site footer reads © 2026 Semrush Holdings and carries an Adobe logo.", "Adobe announced completion of its acquisition of Semrush Holdings, Inc. on 28 April 2026, in a press release on semrush.com. The terms and the privacy policy (last modified 13 October 2025) don't mention Adobe.", "The APIs answer at api.semrush.com and the MCP server at mcp.semrush.com, with OAuth metadata pointing to oauth.semrush.com and api.semrush.com.", "www.semrush.com/.well-known/security.txt returns 404. The security page gives security@semrush.com and links to a HackerOne programme.", "No status page is linked from the developer docs, the home page or the security page. status.semrush.com doesn't resolve in DNS.", "RDAP for semrush.com gives a registration date of 2008-10-03 and MarkMonitor Inc. as registrar." ], "score": 75 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/semrush.json", "live": { "slug": "semrush", "probe": { "target": "https://api.semrush.com", "method": "get", "lastAt": "2026-10-10T03:53:43.046739245Z", "lastOk": true, "lastStatus": 400, "lastMs": 141, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 131, "p95ms24h": 350, "samples24h": 249, "samples30d": 383, "days": [ { "date": "2026-10-08", "probes": 93, "ok": 93 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 40, "ok": 40 } ] }, "securityTxt": { "url": "https://semrush.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-09T15:39:31.232529082Z" }, "llmsTxt": { "url": "https://developer.semrush.com/api/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-09T14:02:45.228012644Z" }, "pages": [ { "url": "https://developer.semrush.com/api/v4/introduction/release-notes/", "kind": "changelog", "status": 200, "checkedAt": "2026-10-09T18:35:20.03522649Z", "changedAt": "2026-10-09T18:35:20.03522649Z", "fingerprint": "008935294309" }, { "url": "https://www.semrush.com/company/legal/privacy-policy/", "kind": "privacy", "status": 200, "checkedAt": "2026-10-09T18:53:58.613422005Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "2024613d6804" }, { "url": "https://www.semrush.com/company/legal/terms-of-service/", "kind": "terms", "status": 200, "checkedAt": "2026-10-09T18:54:00.780820938Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "7935cae6f9d6" } ], "updatedAt": "2026-10-10T03:53:43.046739245Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Majestic (Majestic-12 Limited)", "b": "Semrush Inc. (an Adobe company)", "name": "Vendor" }, { "a": "https://api.majestic.com", "b": "https://api.semrush.com", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP, Streamable HTTP", "name": "Transports" }, { "a": "API key", "b": "OAuth or key", "name": "Auth" }, { "a": "Paid", "b": "Paid", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under Majestic's Terms and Conditions. The Python 3 connector on GitHub carries a BSD-style licence file", "b": "Proprietary service under the Semrush terms of service", "name": "Licence" }, { "a": "none", "b": "14", "name": "Tools exposed" }, { "a": "no", "b": "yes", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "none", "b": "2026-09-04", "name": "Last release" }, { "a": "no date given", "b": "2026-08-25", "name": "Terms last updated" }, { "a": "2026-04-01", "b": "2025-10-13", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "yes", "b": "yes", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "3 stars", "b": "none", "name": "Popularity" } ], "faq": [ { "answer": "Semrush API + MCP scores 53.1 (D) on agent readiness against Majestic API's 33.4 (F), and leads in every scored category.", "question": "Which is better for AI agents, Majestic API or Semrush API + MCP?" }, { "answer": "Majestic API needs an API key. Semrush API + MCP takes an API key or an OAuth sign-in.", "question": "Do Majestic API and Semrush API + MCP need an API key?" }, { "answer": "Yes. Majestic API has a hosted endpoint at https://api.majestic.com and Semrush API + MCP at https://api.semrush.com.", "question": "Can an agent call Majestic API and Semrush API + MCP without installing anything?" } ], "goodFor": [ { "aheadOn": null, "also": null, "goodFor": "An agent that needs backlink, referring domain, anchor text and Trust Flow data in volume for an owner who already pays for the API plan.", "slug": "majestic", "watchFor": "Clause 14.1(f) of the supply terms forbids querying Majestic's database or servers with automated tools without prior permission. This matters before any probe is run" }, { "aheadOn": [ "Reliability, 34 against 17", "Schema \u0026 documentation, 70 against 44", "Agent ergonomics, 77 against 54", "Security \u0026 auth, 54 against 32", "Maintenance \u0026 community, 57 against 22", "Transparency \u0026 trust, 67 against 53" ], "also": null, "goodFor": "Teams already paying for Semrush who want an agent to pull keyword, backlink, ranking and traffic estimates in one place, mainly through the MCP server.", "slug": "semrush", "watchFor": "Domain, URL, Trends, Position Tracking and Site Audit reports are version 3 only, where the one key is a URL parameter and can't be revoked" } ], "job": { "capability": "seo.backlinks", "name": "Backlink data" }, "others": [ { "json": "https://www.anchorterminal.com/compare/ahrefs-vs-majestic.json", "title": "Ahrefs vs Majestic API", "url": "https://www.anchorterminal.com/compare/ahrefs-vs-majestic" }, { "json": "https://www.anchorterminal.com/compare/ahrefs-vs-semrush.json", "title": "Ahrefs vs Semrush API + MCP", "url": "https://www.anchorterminal.com/compare/ahrefs-vs-semrush" }, { "json": "https://www.anchorterminal.com/compare/dataforseo-vs-majestic.json", "title": "DataForSEO vs Majestic API", "url": "https://www.anchorterminal.com/compare/dataforseo-vs-majestic" }, { "json": "https://www.anchorterminal.com/compare/dataforseo-vs-semrush.json", "title": "DataForSEO vs Semrush API + MCP", "url": "https://www.anchorterminal.com/compare/dataforseo-vs-semrush" }, { "json": "https://www.anchorterminal.com/compare/google-search-console-vs-majestic.json", "title": "Google Search Console API vs Majestic API", "url": "https://www.anchorterminal.com/compare/google-search-console-vs-majestic" }, { "json": "https://www.anchorterminal.com/compare/keywords-everywhere-vs-majestic.json", "title": "Keywords Everywhere API + MCP vs Majestic API", "url": "https://www.anchorterminal.com/compare/keywords-everywhere-vs-majestic" }, { "json": "https://www.anchorterminal.com/compare/keywords-everywhere-vs-semrush.json", "title": "Keywords Everywhere API + MCP vs Semrush API + MCP", "url": "https://www.anchorterminal.com/compare/keywords-everywhere-vs-semrush" }, { "json": "https://www.anchorterminal.com/compare/majestic-vs-similarweb.json", "title": "Majestic API vs Similarweb", "url": "https://www.anchorterminal.com/compare/majestic-vs-similarweb" }, { "json": "https://www.anchorterminal.com/compare/manifold-mcp-vs-semrush.json", "title": "Manifold vs Semrush API + MCP", "url": "https://www.anchorterminal.com/compare/manifold-mcp-vs-semrush" }, { "json": "https://www.anchorterminal.com/compare/moz-api-vs-semrush.json", "title": "Moz API vs Semrush API + MCP", "url": "https://www.anchorterminal.com/compare/moz-api-vs-semrush" }, { "json": "https://www.anchorterminal.com/compare/se-ranking-vs-semrush.json", "title": "SE Ranking API + MCP vs Semrush API + MCP", "url": "https://www.anchorterminal.com/compare/se-ranking-vs-semrush" }, { "json": "https://www.anchorterminal.com/compare/semrush-vs-similarweb.json", "title": "Semrush API + MCP vs Similarweb", "url": "https://www.anchorterminal.com/compare/semrush-vs-similarweb" }, { "json": "https://www.anchorterminal.com/compare/google-search-console-vs-semrush.json", "title": "Google Search Console API vs Semrush API + MCP", "url": "https://www.anchorterminal.com/compare/google-search-console-vs-semrush" }, { "json": "https://www.anchorterminal.com/compare/majestic-vs-manifold-mcp.json", "title": "Majestic API vs Manifold", "url": "https://www.anchorterminal.com/compare/majestic-vs-manifold-mcp" }, { "json": "https://www.anchorterminal.com/compare/majestic-vs-moz-api.json", "title": "Majestic API vs Moz API", "url": "https://www.anchorterminal.com/compare/majestic-vs-moz-api" }, { "json": "https://www.anchorterminal.com/compare/majestic-vs-se-ranking.json", "title": "Majestic API vs SE Ranking API + MCP", "url": "https://www.anchorterminal.com/compare/majestic-vs-se-ranking" } ], "scores": [ { "by": 17, "edge": "semrush", "key": "reliability", "majestic": 17, "name": "Reliability", "semrush": 34, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 26, "edge": "semrush", "key": "schema", "majestic": 44, "name": "Schema \u0026 documentation", "semrush": 70, "weight": 13 }, { "by": 23, "edge": "semrush", "key": "ergonomics", "majestic": 54, "name": "Agent ergonomics", "semrush": 77, "weight": 13 }, { "by": 22, "edge": "semrush", "key": "security", "majestic": 32, "name": "Security \u0026 auth", "semrush": 54, "weight": 14 }, { "by": 2, "edge": "semrush", "key": "payments", "majestic": 15, "name": "Payments \u0026 pricing", "semrush": 17, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 35, "edge": "semrush", "key": "maintenance", "majestic": 22, "name": "Maintenance \u0026 community", "semrush": 57, "weight": 7 }, { "by": 14, "edge": "semrush", "key": "transparency", "majestic": 53, "name": "Transparency \u0026 trust", "semrush": 67, "weight": 7 } ], "summary": "Semrush API + MCP scores 53.1 (D) on agent readiness against Majestic API's 33.4 (F), and leads in every scored category. Both do backlink data.", "verdicts": { "majestic": "Each command's cost in units is published and a sandbox endpoint returns sample data without spending allowance. API access starts at $399.99 a month with no trial, and no OpenAPI file, status page, numeric rate limit, SLA or API changelog was found. The supply terms require permission before querying with automated tools.", "semrush": "The hosted MCP server exposes 14 tools that load a report's parameters on demand, and version 4 API keys can be read-only, time-limited and revoked. Most reports still sit in version 3, whose single key travels in the URL and can't be revoked. No status page, OpenAPI file or API unit price was found." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/majestic-vs-semrush", "json": "https://www.anchorterminal.com/compare/majestic-vs-semrush.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/majestic-vs-semrush.md", "slim": "https://www.anchorterminal.com/compare/majestic-vs-semrush.min.md" }, "markdown": "Semrush API + MCP scores 53.1 (D) on agent readiness against Majestic API's 33.4 (F), and leads in every scored category. Both do backlink data.\n\n- Majestic API: grade F, 33.4/100, rank #937 of 950. Markdown https://www.anchorterminal.com/tools/majestic.md · JSON https://www.anchorterminal.com/api/v1/tools/majestic.json\n- Semrush API + MCP: grade D, 53.1/100, rank #721 of 950. Markdown https://www.anchorterminal.com/tools/semrush.md · JSON https://www.anchorterminal.com/api/v1/tools/semrush.json\n- Best SEO and search visibility data for AI agents: https://www.anchorterminal.com/best/seo/index.md\n- All 45 seo comparisons: https://www.anchorterminal.com/compare/seo/index.md\n\n## Which one, for what\n\n### Majestic API (F)\n\nGood for: An agent that needs backlink, referring domain, anchor text and Trust Flow data in volume for an owner who already pays for the API plan.\n\nWatch for: Clause 14.1(f) of the supply terms forbids querying Majestic's database or servers with automated tools without prior permission. This matters before any probe is run\n\n### Semrush API + MCP (D)\n\nGood for: Teams already paying for Semrush who want an agent to pull keyword, backlink, ranking and traffic estimates in one place, mainly through the MCP server.\n\nAhead on:\n- Reliability, 34 against 17\n- Schema \u0026 documentation, 70 against 44\n- Agent ergonomics, 77 against 54\n- Security \u0026 auth, 54 against 32\n- Maintenance \u0026 community, 57 against 22\n- Transparency \u0026 trust, 67 against 53\n\nWatch for: Domain, URL, Trends, Position Tracking and Site Audit reports are version 3 only, where the one key is a URL parameter and can't be revoked\n\n\n## Score by category\n\n| Category | Weight | Majestic API | Semrush API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 17 | 34 | Semrush API + MCP +17 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 44 | 70 | Semrush API + MCP +26 |\n| Agent ergonomics | 13% (16.2 this run) | 54 | 77 | Semrush API + MCP +23 |\n| Security \u0026 auth | 14% (17.5 this run) | 32 | 54 | Semrush API + MCP +22 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 15 | 17 | Semrush API + MCP +2 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 22 | 57 | Semrush API + MCP +35 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 53 | 67 | Semrush API + MCP +14 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **33.4 · F** | **53.1 · D** | |\n\n## Facts side by side\n\n| Fact | Majestic API | Semrush API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Majestic (Majestic-12 Limited) | Semrush Inc. (an Adobe company) |\n| Hosted endpoint | `https://api.majestic.com` | `https://api.semrush.com` |\n| Transports | HTTP | HTTP, Streamable HTTP |\n| Auth | API key | OAuth or key |\n| Pricing | Paid | Paid |\n| x402 | no | no |\n| Licence | Proprietary service under Majestic's Terms and Conditions. The Python 3 connector on GitHub carries a BSD-style licence file | Proprietary service under the Semrush terms of service |\n| Tools exposed | none | 14 |\n| Read-only variant documented | no | yes |\n| llms.txt | yes | yes |\n| Last release | none | 2026-09-04 |\n| Terms last updated | no date given | 2026-08-25 |\n| Privacy policy last updated | 2026-04-01 | 2025-10-13 |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | yes | yes |\n| Terms restrict benchmarking | not found in the text | yes |\n| Terms or service can change without notice | yes | not found in the text |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | 3 stars | none |\n\n## Verdicts\n\n**Majestic API.** Each command's cost in units is published and a sandbox endpoint returns sample data without spending allowance. API access starts at $399.99 a month with no trial, and no OpenAPI file, status page, numeric rate limit, SLA or API changelog was found. The supply terms require permission before querying with automated tools.\n\n**Semrush API + MCP.** The hosted MCP server exposes 14 tools that load a report's parameters on demand, and version 4 API keys can be read-only, time-limited and revoked. Most reports still sit in version 3, whose single key travels in the URL and can't be revoked. No status page, OpenAPI file or API unit price was found.\n\n## Before you call either\n\n### Majestic API\n\n1. Send requests by HTTPS POST with `app_api_key` in the body. The docs show GET URLs for demonstration only and plain HTTP still works\n2. Always set `datasource=fresh` or `datasource=historic`. Without it the Historic Index is used when the plan includes it\n3. Call `GetSubscriptionInfo` (no cost) before a large pull. `GetBackLinkData` spends 5,000 analysis units a call plus one retrieval unit a row\n4. Read columns by header name, not position. The docs say column order can change between requests and Majestic may vary rows and columns at any time\n5. Develop against `https://developer.majestic.com/api/json`, which costs no units, then switch the host to `api.majestic.com`\n6. Ask the owner to confirm Majestic's permission for automated querying first. Clause 14.1(f) of the terms requires it\n\n### Semrush API + MCP\n\n1. Use the MCP server at https://mcp.semrush.com/v2/mcp where the host supports it. Call a discovery tool, then `get_report_schema`, then `execute_report`\n2. Set `limit` or `display_limit` on every per-line report. A backlinks row costs 40 to 45 units and a historical keyword row 50\n3. Check the unit balance before large pulls. A per-line report returns only the lines the balance covers, with no error\n4. Send the version 4 key as `Authorization: Apikey \u003ckey\u003e`, never as `?key=`. Version 3 accepts only the query parameter, so keep those URLs out of logs\n5. Stay under 10 requests a second and 10 concurrent requests per account, and retry only when `error.retryable` is true\n\n## Questions\n\n### Which is better for AI agents, Majestic API or Semrush API + MCP?\n\nSemrush API + MCP scores 53.1 (D) on agent readiness against Majestic API's 33.4 (F), and leads in every scored category.\n\n### Do Majestic API and Semrush API + MCP need an API key?\n\nMajestic API needs an API key. Semrush API + MCP takes an API key or an OAuth sign-in.\n\n### Can an agent call Majestic API and Semrush API + MCP without installing anything?\n\nYes. Majestic API has a hosted endpoint at https://api.majestic.com and Semrush API + MCP at https://api.semrush.com.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/majestic-vs-semrush.json, and with the fewest tokens: https://www.anchorterminal.com/compare/majestic-vs-semrush.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"majestic\", \"b\": \"semrush\"}`. From a terminal: `anchor compare majestic semrush`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/majestic.json and https://www.anchorterminal.com/api/v1/tools/semrush.json\n\n## Other comparisons with Majestic API or Semrush API + MCP\n\n- [Ahrefs vs Majestic API](https://www.anchorterminal.com/compare/ahrefs-vs-majestic.md)\n- [Ahrefs vs Semrush API + MCP](https://www.anchorterminal.com/compare/ahrefs-vs-semrush.md)\n- [DataForSEO vs Majestic API](https://www.anchorterminal.com/compare/dataforseo-vs-majestic.md)\n- [DataForSEO vs Semrush API + MCP](https://www.anchorterminal.com/compare/dataforseo-vs-semrush.md)\n- [Google Search Console API vs Majestic API](https://www.anchorterminal.com/compare/google-search-console-vs-majestic.md)\n- [Keywords Everywhere API + MCP vs Majestic API](https://www.anchorterminal.com/compare/keywords-everywhere-vs-majestic.md)\n- [Keywords Everywhere API + MCP vs Semrush API + MCP](https://www.anchorterminal.com/compare/keywords-everywhere-vs-semrush.md)\n- [Majestic API vs Similarweb](https://www.anchorterminal.com/compare/majestic-vs-similarweb.md)\n- [Manifold vs Semrush API + MCP](https://www.anchorterminal.com/compare/manifold-mcp-vs-semrush.md)\n- [Moz API vs Semrush API + MCP](https://www.anchorterminal.com/compare/moz-api-vs-semrush.md)\n- [SE Ranking API + MCP vs Semrush API + MCP](https://www.anchorterminal.com/compare/se-ranking-vs-semrush.md)\n- [Semrush API + MCP vs Similarweb](https://www.anchorterminal.com/compare/semrush-vs-similarweb.md)\n- [Google Search Console API vs Semrush API + MCP](https://www.anchorterminal.com/compare/google-search-console-vs-semrush.md)\n- [Majestic API vs Manifold](https://www.anchorterminal.com/compare/majestic-vs-manifold-mcp.md)\n- [Majestic API vs Moz API](https://www.anchorterminal.com/compare/majestic-vs-moz-api.md)\n- [Majestic API vs SE Ranking API + MCP](https://www.anchorterminal.com/compare/majestic-vs-se-ranking.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-10", "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" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Majestic API vs Semrush API + MCP", "url": "" } ], "description": "Semrush scores 53.1 (D) to Majestic's 33.4 (F) for backlink data. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Majestic API F 33.4", "Semrush API + MCP D 53.1", "scores" ], "h1": "Majestic API vs Semrush API + MCP", "image": "https://www.anchorterminal.com/assets/og/compare-majestic-vs-semrush.png", "path": "/compare/majestic-vs-semrush", "published": "2026-10-01", "section": "tools", "title": "Majestic vs Semrush for AI agents in 2026: scores and prices", "toc": null, "updated": "2026-10-09", "url": "https://www.anchorterminal.com/compare/majestic-vs-semrush" }, "tokens": { "markdown": 2350, "slim": 680 }, "version": 1 }