SEO Score

About SEO Score

SEO Score API is a hosted REST API that returns a scored SEO audit for any URL. A single call runs checks across seven areas — meta and content, technical SEO, social and Open Graph tags, performance, accessibility, AI readability, and SXO/AEO/AIO scoring — and returns a 0-100 score, a letter grade, and ranked priority fixes as JSON. Each check reports a pass, warning, or fail status, along with an actionable fix.

The API is built for developers and agencies who want SEO checks embedded in code, CI/CD pipelines, or AI agents rather than accessed through a dashboard. It works on JavaScript-rendered sites and Cloudflare pages, authenticates via an X-API-Key header, and is accessible through Python, JavaScript, cURL, or any HTTP client. Paid plans add historical score tracking with a GET /history endpoint, batch audits, score monitoring across multiple URLs, and dedicated request-rate quotas.

The free tier offers 2 audits per day and 54 core checks with no credit card required. Paid plans start at $5/month for 200 audits covering all 82 checks, scaling up to $99/month for 25,000 audits with GEO audits, ADA audits, and priority support.

Key features

• Runs 82 SEO, technical, performance, accessibility, and AI-readability checks per URL via a single API call
• Returns a 0-100 score, letter grade, and ranked priority fixes as JSON
• AI Readability scoring evaluates crawl access (llms.txt, AI-bot allowlist), structure, and extractability for LLMs/RAG
• GEO Audit measures content visibility to AI search engines across 26 checks
• Historical tracking with score deltas and full timeseries via GET /history on paid plans
• Score monitoring for multiple URLs and batch audits on paid plans

Frequently asked questions