SEO Data API
One SEO API for all the SEO data you need — keyword research, backlinks, domain metrics, SERPs, on-page audits, and Google Trends — behind a single key. A pay-per-call SEO data API from $0.01 with $5 free credit and no minimums. A powerful DataForSEO alternative.
No credit card required. Takes 30 seconds.
2,400+
Developers
1.2M+
API calls served
100+
Endpoints
$0.01
Per call
Yep, that's it.
36
endpoints
$0.02
min per call
9
backlink endpoints
Why builders choose YepAPI
SEO keyword API
Get search volume, keyword difficulty, CPC, competition, and related keywords for any term. Build keyword research tools that rival Ahrefs and SEMrush.
SEO backlink API
Full backlink profiles for any domain. Referring domains, anchor text distribution, new and lost backlinks, domain authority metrics — all via API.
SEO metrics & report API
Pull domain authority, organic traffic estimates, ranking data, and on-page audit scores as clean JSON — the SEO stats and reports you'd build dashboards on.
SEO trends & SERP API
Track trending searches, interest over time, and live SERP results. Perfect for content planning, rank tracking, and programmatic SEO tools.
One API call. Real SEO data.
No SDK required. Just a POST request with your API key.
const res = await fetch("https://api.yepapi.com/v1/seo/keywords", {
method: "POST",
headers: {
"Authorization": "Bearer yep_sk_your_key",
"Content-Type": "application/json",
},
body: JSON.stringify({
keyword: "best project management tools",
location: "us",
}),
});
const data = await res.json();
console.log(data.data.volume, data.data.difficulty);import requests
r = requests.post("https://api.yepapi.com/v1/seo/keywords",
headers={"Authorization": "Bearer yep_sk_your_key"},
json={
"keyword": "best project management tools",
"location": "us",
}
)
data = r.json()
print(data["data"]["volume"], data["data"]["difficulty"])SEO Keyword API
6Keywords
$0.15Keyword research API with search volume, CPC, difficulty, competition, and 12-month trends. Up to 100 keywords per request from $0.15/call.
Keyword Ideas
$0.02+Generate hundreds of keyword ideas from any seed keyword with volume, CPC, and difficulty scores. Content planning and topic expansion from $0.03/call.
Related Keywords
$0.02+Discover semantically related keywords and variations with volume, CPC, and difficulty. Build topical authority from $0.03/call.
Keyword Difficulty
$0.02Keyword difficulty API — 0-100 KD scores for up to 1,000 keywords per call. A bulk keyword difficulty checker from $0.02.
Keyword Overview
$0.02Keyword overview API returning volume, difficulty, intent, CPC & backlinks per keyword. A keyword data API from $0.02/call.
Search Intent
$0.02Search intent API that classifies keywords as informational, commercial, navigational or transactional in bulk. From $0.02/call.
SEO Metrics & Domain Data API
9Domain Overview
$0.04Domain authority, organic traffic estimates, backlink counts, and top-ranking keywords in a single API call. Competitor intelligence from $0.04/call.
Domain Keywords
$0.02+Get every keyword a domain ranks for with positions, volume, traffic, and intent. Reverse-engineer competitor SEO strategies from $0.04/call.
Backlinks
$0.04+Full backlink profile for any domain — referring domains, anchor text, follow/nofollow, and authority scores. Link building research from $0.05/call.
Rank Overview
$0.04Domain rank API — organic traffic (ETV), ranked keywords, SERP position distribution & movement for any site. From $0.04/call.
Traffic Estimation
$0.03Website traffic API to estimate organic & paid traffic for up to 1,000 domains at once. A traffic checker API from $0.03/call.
Technologies
$0.03Detect every technology on any website — CMS, analytics, frameworks, CDN, hosting, and more. Technology profiling from $0.03/call.
Whois
$0.02Whois lookup API — registrar, creation date, expiry, nameservers, and registrant info for any domain. Domain research from $0.02/call.
Domain Metrics
$0.02Ahrefs-style authority + traffic metrics — DR, UR, backlinks, ref domains, traffic, and organic keywords at page and domain scope. $0.02/call.
Domain Availability
$0.02Check domain availability in bulk — up to 50 domains per call. Detects premium names with registration pricing. From $0.02/call.
SEO Backlink API
6Backlinks List
$0.04+Every backlink pointing to any URL or domain with anchor text, authority scores, and follow/nofollow status. Bulk link data from $0.05/call.
Backlinks Summary
$0.03Backlink profile summary — total links, referring domains, dofollow ratio, and authority distribution in one call. Quick link audits from $0.03/call.
Anchors
$0.04+Anchor text distribution analysis for any backlink profile. Detect over-optimization and plan natural link building from $0.03/call.
Referring Domains
$0.04+All referring domains linking to any target with authority scores, link counts, and first-seen dates. Link prospecting from $0.03/call.
Domain Intersection
$0.04+Find domains that link to competitors but not to you. Uncover link building opportunities your rivals already have from $0.05/call.
Page Intersection
$0.04+Find specific pages that link to competitor URLs but not yours. Page-level link gap analysis for targeted outreach from $0.05/call.
SEO Audit & Checker API
3On-Page Instant
$0.03Instant on-page SEO audit for any URL — meta tags, headings, schema, images, internal links, and Core Web Vitals. From $0.03/call.
Content Parsing
$0.03Extract and analyze page content — word count, readability, keyword density, headings, and plain text. Content auditing from $0.03/call.
Lighthouse
$0.05Full Google Lighthouse audit via API — performance, accessibility, best practices, and SEO scores with actionable diagnostics. From $0.05/call.
SEO Content Analysis API
3Content Search
$0.04+Search and analyze web content for any keyword — social shares, backlinks, word count, and content type. Content research from $0.03/call.
Content Summary
$0.02Aggregate content metrics for any topic — average word count, social engagement, backlink counts, and publication frequency. From $0.02/call.
Sentiment
$0.04+Sentiment analysis of web content around any keyword — positive, negative, and neutral breakdowns with confidence scores. From $0.03/call.
Competitor SEO API
4SERP Competitors
$0.02+Find which domains compete for your target keywords in Google SERPs. Identify SERP competitors automatically from $0.04/call.
Domain Competitors
$0.02+Discover SEO competitors for any domain with overlap scores, shared keywords, and traffic comparisons. Competitive analysis from $0.04/call.
Keyword Gap
$0.02+Keyword gap analysis between two domains — find keywords your competitor ranks for that you don't. Close content gaps from $0.04/call.
SERP Overlap
$0.02+Compare specific pages to find shared SERP keywords. Detect content cannibalization and page-level competition from $0.04/call.
SEO Trends & Rankings API
2Trends
$0.02Google Trends data API — interest over time, regional breakdown, and related queries for any keyword. Trend analysis from $0.02/call.
Business Info
$0.03Structured business data API — name, address, phone, hours, ratings, and categories. Local SEO and lead enrichment from $0.03/call.
AI SEO Optimization API
3ChatGPT Scraper
$0.05Scrape ChatGPT search results — AI-generated answers, cited sources, and follow-up questions. Track AI SEO visibility from $0.05/call.
Gemini Scraper
$0.05Scrape Google Gemini search results — AI answers, cited URLs, and related topics. Monitor LLM search engine optimization from $0.05/call.
LLM Mentions
$0.20+Find where your brand, domain, or keyword shows up in ChatGPT and Google AI Overviews. Search a pre-indexed corpus of 253M+ LLM prompts from $0.20/call.
One SEO data API for keywords, backlinks, SERPs, and audits
YepAPI is a single SEO API that returns the SEO data you'd otherwise stitch together from four separate tools — keyword research, backlinks, domain metrics, SERPs, on-page audits, and content analysis. It's production-grade SEO data behind one key, with no $500/month subscription. Pay per call, starting at $0.01.
Building programmatic SEO tools? Use our SEO keyword API to pull search volume and difficulty for thousands of terms, our SEO backlink API to analyze competitor link profiles, and our SEO trends API to spot rising topics. Every endpoint returns clean JSON ready for your pipeline.
YepAPI also bundles YouTube transcript API and YouTube data endpoints under the same key. Extract video transcripts, search YouTube, pull channel analytics, and more. One API key covers SEO data, YouTube data, web scraping, SERP results, and AI models.
What is an SEO data API?
An SEO data API is a programmatic interface that returns search engine optimization data — keyword metrics, backlink profiles, domain authority, SERP results, and on-page audit scores — as structured JSON instead of a dashboard. Rather than logging into an SEO tool and exporting CSVs, you send an HTTP request and get the same data back in milliseconds, ready to pipe into your app, agent, or content workflow. YepAPI exposes every SEO metric through one REST endpoint family so you can query keywords, backlinks, and metrics with a single key.
Build SEO tools on one API
Most SEO products are just a UI on top of data you can pull yourself. With YepAPI you can build rank trackers, keyword research tools, backlink monitors, site auditors, and content briefs on a single SEO API — no need to integrate four vendors. The SEO keyword API powers research and clustering, the SEO backlink API powers link analysis, the SEO metrics API powers domain scoring, and the SEO audit & checker API powers on-page reports. One key, one bill, consistent JSON across all of them.
SEO data API pricing — from $0.01 per call
YepAPI is a pay-per-call SEO data API: most endpoints start at $0.01–$0.15 per call with no monthly subscription, no minimum balance, and no annual contract. Every account starts with $5 of free credit (no card required) — enough for hundreds of keyword, backlink, and domain lookups to test the API. That makes it one of the cheapest and most accessible SEO APIs for indie developers and agencies who want real data without enterprise pricing. Compare that to a DataForSEO minimum balance or SEMrush and Ahrefs enterprise API plans.
One SEO API for keywords, backlinks, SERPs, and audits
Whether you searched for an SEO report API, an SEO analytics API, an SEO checker API, or an SEO metrics API, it's all the same key here. Pull keyword data, backlink data, domain metrics and stats, competitor SERP data, and on-page audits from one consistent SEO data API and assemble exactly the report or tool you need.
Looking for a DataForSEO alternative?
YepAPI gives you the same data with simpler pricing. One API key, pay per call, no monthly minimums.
What developers say
“Switched from SerpAPI and cut our SERP costs by 80%. Same data quality, way simpler billing.”
“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”
“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”
Frequently asked questions
An SEO API provides programmatic access to search engine optimization data — keyword research, backlink profiles, domain metrics, on-page analysis, and content insights. Instead of manually checking SEO tools, you make API calls to get the same data in structured JSON. YepAPI's SEO API covers keywords, backlinks, domain authority, on-page audits, and content analysis.
YepAPI's SEO data API covers: keyword research (volume, difficulty, CPC, related terms), backlink analysis (referring domains, anchor text, new/lost links), domain metrics (authority score, organic traffic estimates), on-page SEO audits, content analysis, Google Trends data, and SERP feature tracking. All endpoints return structured JSON.
YepAPI gives you $5 of free credit on signup with no credit card required — enough for hundreds of SEO data lookups (keywords, backlinks, domain metrics) to test the API. It's not a capped free tier: the credit works across every endpoint, and when it runs out you pay per call from $0.01 with no monthly minimum. It's the closest thing to a free SEO API for developers who want real data without a subscription.
Yes. YepAPI bundles YouTube data endpoints alongside SEO APIs — all under the same key. You can extract transcripts and captions from any YouTube video, search videos, get detailed video metadata, pull comments, and access channel statistics. The YouTube transcript API is perfect for content repurposing, video SEO, and training data collection.
Absolutely. YepAPI's SEO API is built for programmatic SEO workflows. Pull keyword data for thousands of terms, generate content briefs at scale, check backlink profiles automatically, and feed everything into your content pipeline. Pay-per-call pricing means you only pay for the data you need — no monthly ceiling that limits your pages.
YepAPI offers similar SEO data endpoints to DataForSEO — keyword research, backlinks, domain metrics, SERP data — but with simpler pricing and no minimum monthly balance. DataForSEO requires a $50 minimum deposit. YepAPI gives you $5 free credit to start, then pay per call with no minimums. Plus, YepAPI bundles web scraping, AI models, and YouTube data under the same key.
A keyword research API lets you programmatically look up search volume, keyword difficulty, cost-per-click, competition level, and related keyword suggestions for any search term. YepAPI's keyword research API supports multiple locations and languages, returns SERP features, and includes trend data. Use it to build SEO dashboards, content planning tools, or keyword generators.
YepAPI's SEO API uses pay-per-call pricing starting at $0.01/call. No monthly subscriptions, no minimum commitments, no annual contracts. You get $5 free credit on signup (no credit card required) — enough for hundreds of SEO data lookups to test the API. Compare that to DataForSEO at $50+ minimum or SEMrush API at $499+/month.
YepAPI is one of the cheapest SEO data APIs because it charges per call (from $0.01) with no monthly minimum, no subscription, and $5 of free credit to start. Most competitors require a recurring plan or a minimum balance — DataForSEO has a minimum deposit, and SEMrush and Ahrefs sell API access on enterprise tiers. If you only need a few thousand keyword, backlink, or domain lookups a month, pay-per-call is almost always cheaper than a subscription.
Yes. YepAPI is designed for builders. You can build rank trackers, keyword research tools, backlink monitors, site auditors, content brief generators, and SEO dashboards on a single key. The keyword, backlink, domain-metrics, on-page audit, SERP, and trends endpoints all return consistent JSON, so you can assemble exactly the SEO tool or report you need without integrating multiple vendors.
You can pull keyword metrics (search volume, difficulty, CPC, competition, related terms), backlink metrics (referring domains, anchor text, new/lost links), domain metrics (authority score, organic traffic estimates, ranking keywords), on-page and Lighthouse audit scores, SERP results and features, competitor data, and Google Trends — all as structured JSON from one SEO data API.
Ready to build?
Get your API key and start making calls in 30 seconds. $5 free credit on signup. No credit card required.