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 API34 services in this categoryAnalyze plain text for readability metrics, reading time, and language-specific scores for English or German content.
Get ranked search results for a keyword with language and location filters. Useful for SEO research, rank tracking, and competitor analysis.
Compare website URLs and get similarity scores, SEO scores, summaries, and suggested improvements for each site. Useful for overlap checks and audits.
Audit a webpage URL and get canonical, robots.txt, SSL status, performance_score, issues, and overall_score for technical SEO checks.
Extract schema metadata from a URL, including schema count, breadcrumbs, organization flags, and structured data objects for SEO checks.
Check a URL for CSP, HSTS, and X-Frame-Options, with a score and fix recommendations for missing security headers.
Compare two or more website URLs and get technical SEO signals for each page, including metadata, headings, links, images, SSL, mobile, and load time.
Check a webpage URL for common security headers and get an overall score. Returns booleans for CSP, HSTS, referrer policy, X-Frame-Options, and more.
Detect the technologies used by a webpage from a URL. Returns the source URL and a list of detected technologies for audits and research.
Audit a webpage by URL and get SEO metadata, tech stack, performance metrics, broken links, security headers, and mobile-friendly status.
Check a webpage’s structured data and metadata from a URL. Returns JSON-LD, microdata, Open Graph, Twitter card, and SEO summary fields.
Validate raw HTML for structured data and get JSON-LD, microdata, meta tags, Open Graph, Twitter card, and a validation summary.
The question you arrived with, and the endpoint that answers it.