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Best rating metrics APIs

Global SEO Performance API

Data & Analytics

Unlock global SEO insights to elevate website performance using the Global SEO Performance Insights API.

Free 7-Day Trial

100% uptime 45ms avg MCP ready

Text Readability Metrics API

Natural Language Processing (NLP)

The Text Readability Metrics API calculates readability metrics for text. Supported metrics include the Automated Readability Index, Coleman-Liau Index, Flesch–Kincaid Grade Level, Flesch Reading Ease, Gunning-Fog Index, SMOG score, and SMOG Index. This API can be used to evaluate the readability of written content, making it easier to target specific audiences and improve overall readability.

Free 7-Day Trial

100% uptime 670ms avg MCP ready

Domain Ranker API

Data & Analytics

Get the ranking and authority of any domain entered, useful for SEO analysis, digital marketing, and website evaluation.

Free 7-Day Trial

100% uptime 763ms avg MCP ready

Reel Metrics API

Entertainment & Media

Reel Metrics API provides comprehensive data on movie and TV show ratings, external links, and metadata for seamless integration into streaming, analytics, or review platforms.

Free 7-Day Trial

100% uptime 127ms avg MCP ready

Readability API

Natural Language Processing (NLP)

Score the readability of any English text. Returns Flesch-Kincaid, Gunning Fog, SMOG, ARI scores, sentence-level breakdown, improvement suggestions, and target grade pass/fail in one call.

Free 7-Day Trial

100% uptime 423ms avg MCP ready

Website Authority Analyzer API

Data & Analytics

Get domain and page authority along with key metrics, helping you efficiently evaluate relevance, trust, and web positioning.

Free 7-Day Trial

100% uptime 305ms avg MCP ready

Retrieve Web Content Metrics API

Data & Analytics

Gain insights through easy retrieval of web content metrics, improving your online strategies with the Retrieve Web Content Metrics API.

Free 7-Day Trial

100% uptime 403ms avg MCP ready

Domain Metrics Extraction API

Data & Analytics

Extract essential domain metrics with ease to optimize your online presence and track your competitive edge.

Free 7-Day Trial

100% uptime 519ms avg MCP ready

Domain Quality Checker API

Data & Analytics

Input a domain and receive its SEO power using Ahrefs Rank and Domain Rating, streamlining decision-making for marketers and developers.

Free 7-Day Trial

100% uptime 57ms avg MCP ready

Fetch Web Metrics Information API

Data & Analytics

Access essential web metrics information seamlessly to enhance your site's efficiency with the Fetch Fetch Web Metrics Information API.

Free 7-Day Trial

100% uptime 480ms avg MCP ready

Retrieve Metrics from Web Content API

Data & Analytics

Quickly extract crucial metrics from web content for smarter decision-making and strategy.

Free 7-Day Trial

100% uptime 484ms avg MCP ready

Web Metrics Information API

Data & Analytics

Get reliable domain metrics with domain rating and Ahrefs rank to analyze website authority, measure SEO strength, and improve digital performance.

Free 7-Day Trial

100% uptime 1,168ms avg MCP ready

Domain Authority Rank API

Data & Analytics

Analyzes domains, returning key metrics such as ranking and authority, helping to measure online reputation, SEO competitiveness, and global digital presence.

Free 7-Day Trial

100% uptime 1,057ms avg MCP ready

SEO Metrics Domain API

Data & Analytics

Get detailed domain metrics like Trust Flow, Citation Flow, topical authority, and domain rank instantly by submitting any URL to this API.

Free 7-Day Trial

100% uptime 2,684ms avg MCP ready

Get Domain Authority Metrics API

Data & Analytics

Get comprehensive domain authority metrics to elevate your online presence and rankings.

Free 7-Day Trial

100% uptime 751ms avg MCP ready

Web Metrics Data Capture API

Data & Analytics

Capture vital web metrics effortlessly and drive data-driven decisions with our Web Metrics Data Capture API.

Free 7-Day Trial

100% uptime 17ms avg MCP ready

Web Metrics Insights Fetcher API

Data & Analytics

Unlock powerful insights on web metrics to supercharge your online visibility using the Web Metrics Insights Fetcher API.

Free 7-Day Trial

100% uptime 820ms avg MCP ready

SEO Metrics Analyzer API

Data & Analytics

The SEO Metrics Analyzer API evaluates domain authority, backlinks, credibility, and categorization, offering crucial insights to enhance online optimization efforts.

Free 7-Day Trial