CrawlGraph
FreemiumLiveLast verified 24 Sept 2026
Looks up which domains link to a given site, with authority scores, from Common Crawl snapshots.
Example request
curl -s https://crawlgraph.com/api/v1/releases -H "Authorization: Bearer $API_KEY"
Free tier, in plain English
A free key (emailed on request, no card) gives 15 backlink lookups a month; paid unlocks 1,000/month plus gap analysis.
Alternatives in SEO & Backlinks
ASORadarApp Store and Google Play reviews, sentiment, rankings, keyword tracking, and app metadata.FreemiumCrawl ReadinessChecks if AI crawlers (GPTBot, ClaudeBot, PerplexityBot, etc.) can read a site; scores 0-100 with fixes.FreemiumOpen Page RankDomain authority scores (0-10) with monthly history, derived from Common Crawl's web graph.FreemiumSEO Score APIScores a URL's SEO, performance, accessibility, and AI-search readability across dozens of checks.Freemium