SEO APIs.
An SEO API lets software read and act on search performance data programmatically — checking where a page ranks, auditing technical health, generating metadata, or pulling backlink and keyword figures — without anyone opening a dashboard. The alternative is scraping search results yourself and owning that scraper forever.
Also called a search API, SERP API, rank tracking API or search visibility API56 services in this categorySEO APIs
56 servicesGet SERP Results API
Pull Google search results for any keyword by location, language and device with SE Ranking's SERP API. Async tasks, advanced results and raw HTML.
Analyze Backlinks API
Backlinks API from SE Ranking: send a domain, host, or URL and get backlinks, referring domains, anchors, authority, and link history. Free tier, no card.
Advanced Domain Analysis API
Run in-depth competitive analysis on any domain. Powered by SE Ranking data for traffic, keyword, and visibility research across competitors.
Resume Optimizer (ATS) API
Rewrite a resume for a target job title and get before and after ATS scores, the improved version, and the list of keywords added.
Sumalya APIsVerifiedAdvanced Website Similarity Analysis API
Compare a list of website URLs and get an overall similarity score, per-site SEO scores, AI summaries, and concrete improvement suggestions.
Sumalya APIsVerifiedExtract Structured Data API
Check any URL for schema markup and get structuredData, schemaCount, hasBreadcrumbs, and hasOrganization back for SEO audits and automation.
Sumalya APIsVerifiedEvaluate SEO Health API
Audit a webpage and get a score, grade, structured-data breakdown, and the top fixes. Built for checking metadata and rich-result readiness.
Validate HTML API
Validate raw HTML for JSON-LD, microdata, meta tags, Open Graph, and Twitter cards. Returns warnings, errors, and rich result eligibility.
Check Rich Results API
Audit any webpage for rich result eligibility. Returns the types checked, eligibility status, and missing or recommended fields for each type.
Technical Comparison of Webpages API
Compare multiple website URLs and get technical SEO data for each page, including metadata, headings, links, accessibility, and load time.
Sumalya APIsVerifiedSecurity Header Full Audit API
Audit a URL's security headers and get a score, per-header status, and recommendations. Covers CSP, HSTS, and the other browser protections.
Sumalya APIsVerifiedWebpage Technical Performance Audit API
Check a webpage for canonical tags, robots.txt, SSL status, and performance scores. Returns issues and an overall score for technical SEO review.
Sumalya APIsVerifiedWhich SEO API do you need?
The question you arrived with, and the endpoint that answers it.