SEO APIs

12 Best SEO APIs for Programmatic Use in 2026

Dashboard SEO tools charge $200 to $500 per month for interfaces most technical SEOs barely use. The real value is the data underneath, and you can access it directly through APIs at a fraction of the cost. This roundup covers the best SEO APIs for agencies, technical SEOs, and anyone building custom tools or automations.

I have organized them by what they do best: SERP data, backlinks, keywords, and all-in-one coverage. Each tool is evaluated on data quality, API documentation, pricing model, and suitability for programmatic workflows with AI coding tools like Claude Code.

Last updated: March 26, 2026

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Some links on this page are affiliate links, meaning I may earn a commission if you sign up (at no extra cost to you). This never influences my ratings or recommendations. Tools I wouldn't genuinely recommend are marked as such.

Who Is This Guide For?

✓Technical SEOs building custom tools and automations
✓Agencies wanting to cut dashboard costs and automate reporting
✓Developers building SEO SaaS products or internal tools
✓Anyone using AI coding tools (Claude Code, Cursor) for SEO workflows

⚡ Quick Verdict

DataForSEO is the best all-around choice for API-first SEO work: broadest coverage, pay-as-you-go pricing, no subscriptions. For pure SERP scraping on a budget, Serper is unbeatable at $0.30 per 1,000 queries. If you need the deepest backlink data, the Ahrefs API is still the gold standard. Start with the free Google APIs (Search Console, PageSpeed Insights) before spending anything.

#	Tool	Best For	Price	Rating
1	DataForSEOTOP PICK	Agencies and developers who want one API provider for all SEO data needs	From $0.002/query	9.2/10
2	Serper	Budget-conscious rank tracking and SERP monitoring	From $0.30/1K queries	8.8/10
3	SerpApi	Multi-engine SERP data and international SEO	From $50/month	8.5/10
4	HasData	Detailed SERP feature analysis and AI overview tracking	From $49/month	8/10
5	BrightData SERP API	High-volume SERP scraping at enterprise scale	Custom pricing	8/10

Show all 12 tools

6	Ahrefs API	Agencies where backlink analysis is a core service	From $129/month	9/10
7	Majestic API	Link quality assessment and topical relevance analysis	From $49.99/month	8.2/10
8	Moz Links API	Domain Authority scoring and link quality auditing	From $250/month	7.8/10
9	Semrush API	Competitive keyword intelligence and traffic analytics	From $499.95/month	8.7/10
10	Google Search Console API	Every SEO. This is non-negotiable.	Free	9/10
11	Google PageSpeed Insights API	Core Web Vitals monitoring and technical SEO auditing	Free	8.5/10
12	Google Indexing API	Getting new content indexed fast	Free	8/10

My Top Picks

Showing 12 of 12 tools

DataForSEO

⭐ Top Pick

★9.2/10

Best for: Agencies and developers who want one API provider for all SEO data needs

The most comprehensive API-first SEO data platform. Covers SERP data, keyword volumes, backlinks, on-page analysis, Google Business data, and more. No dashboard, no subscriptions. Pure pay-as-you-go API access with excellent documentation.

Why I like it:Broadest API coverage in the market with genuinely affordable pay-as-you-go pricing. No forced subscriptions. The documentation is clear enough that AI coding tools can work with it out of the box.

Key Features

700+ Google SERP locations with all features parsedKeyword volumes from Google Ads data ($0.05/1K keywords)Backlink index with new/lost link trackingOn-page analysis API for technical auditsGoogle Business and App Store dataClient libraries for Python, PHP, Java, C#

✓Pros

Pay-as-you-go pricing, no minimum spend
Broadest data coverage of any API-first tool
Excellent documentation
No forced subscriptions

✗Cons

Backlink index smaller than Ahrefs
No GUI for quick manual lookups
Learning curve for non-developers

Review coming soonVisit DataForSEO →

Serper

Best Value

★8.8/10

Best for: Budget-conscious rank tracking and SERP monitoring

The fastest and cheapest way to get Google SERP data via API. Returns structured JSON for organic results, featured snippets, People Also Ask, knowledge graph, and more. 2,500 free searches per month.

Why I like it:Absurdly cheap for what you get. The free tier is generous enough to prototype a rank tracker before spending a dollar. Response times are fast and the API is dead simple.

Key Features

Google web, images, news, maps, shopping, scholarAutocomplete and related searchesStructured JSON with all SERP features2,500 free searches per monthCredits last 6 monthsSimple REST API, easy to integrate

✓Pros

Cheapest SERP API available
Generous free tier (2,500/month)
Fast response times
Simple API design

✗Cons

Google only (no Bing/Yahoo)
No keyword volume or backlink data
Limited to SERP scraping

Review coming soonVisit Serper →

SerpApi

★8.5/10

Best for: Multi-engine SERP data and international SEO

Real-time SERP scraping for Google, Bing, Baidu, Yahoo, Yandex, DuckDuckGo, YouTube, and more. The widest search engine coverage of any SERP API. Handles proxies, CAPTCHAs, and JavaScript rendering.

Why I like it:If you need SERP data beyond Google, SerpApi is the only serious option. The playground for testing queries is genuinely useful for debugging, and official client libraries exist for almost every language.

Key Features

15+ search engines supportedGoogle Maps, Shopping, Scholar, TrendsPlayground for testing queriesOfficial libraries for Python, Ruby, Node, Java, Go, PHP100 free searches per monthHandles CAPTCHAs and JS rendering

✓Pros

Widest search engine coverage
Excellent debugging playground
Mature, well-documented product

✗Cons

More expensive than Serper for Google-only use
Subscription model with overage charges

Review coming soonVisit SerpApi →

HasData

★8/10

Best for: Detailed SERP feature analysis and AI overview tracking

Google SERP API with 15+ parsed SERP features including AI overviews, featured snippets, knowledge graphs, and local pack. Returns clean structured JSON. Good balance of price and data depth.

Why I like it:Parses more SERP features than most competitors, including the newer AI overview elements. Good documentation and reasonable pricing for mid-volume usage.

Key Features

15+ SERP features parsed to structured JSONAI overview detection and parsingGoogle Maps and Shopping data100 free searches per monthStartup to enterprise plansClean REST API design

✓Pros

Excellent SERP feature parsing
AI overview detection and support
Reasonable pricing for mid-volume

✗Cons

Google only
Smaller company than competitors
Limited track record

Review coming soonVisit HasData →

BrightData SERP API

★8/10

Best for: High-volume SERP scraping at enterprise scale

SERP data powered by one of the largest proxy networks in the world. Handles Google, Bing, DuckDuckGo, Yahoo, and Yandex. Built for scale with enterprise-grade reliability.

Why I like it:When you need millions of SERP queries per month, BrightData's infrastructure is hard to beat. Their proxy network handles geographic targeting better than anyone.

Key Features

Multiple search engines supportedLargest proxy network globallyStructured data and raw HTML optionsGeographic targeting at city levelEnterprise SLAs availableHandles anti-bot measures at scale

✓Pros

Unmatched scale and reliability
Excellent geo-targeting at city level
Enterprise support and SLAs

✗Cons

Pricing not transparent (custom quotes)
Overkill for small agencies
Primarily a proxy company

Review coming soonVisit BrightData SERP API →

Ahrefs API

Best Backlink Data

★9/10

Best for: Agencies where backlink analysis is a core service

Access the largest backlink index in the industry via API. Get referring domains, backlink profiles, anchor text, organic keywords, and SERP data. API access is included with Ahrefs subscriptions.

Why I like it:The backlink data is simply the best in the industry. The index is enormous, updates frequently, and the metrics (DR, UR) are widely trusted. If link building is what you do, this API pays for itself.

Key Features

Largest backlink index (trillions of links)Domain Rating and URL Rating metricsOrganic keyword and traffic estimatesNew and lost backlinks trackingContent Explorer data via APIREST API v3 with clear documentation

✓Pros

Best backlink data quality in the industry
Strong organic keyword data
Widely trusted DR/UR metrics

✗Cons

API bundled with subscription, no standalone plan
Credit limits on lower plans
Not cheap

Review coming soonVisit Ahrefs API →

Majestic API

★8.2/10

Best for: Link quality assessment and topical relevance analysis

Specialized backlink analysis API with proprietary Trust Flow and Citation Flow metrics. Offers both fresh and historic backlink indexes. The dedicated API plan is built for programmatic use.

Why I like it:Trust Flow is one of the most useful link quality metrics available. The Topical Trust Flow feature, which categorizes links by topic, is unique to Majestic and genuinely valuable for assessing link relevance.

Key Features

Trust Flow and Citation Flow metricsTopical Trust Flow (link categorization by topic)Fresh and Historic backlink indexesReferring subnets and IPs analysisBulk backlink checkingDedicated API plan with generous limits

✓Pros

Unique Trust Flow metrics
Topical link categorization
Large historic backlink index

✗Cons

Interface feels dated
Dedicated API plan is expensive
Less useful for keyword research

Review coming soonVisit Majestic API →

Moz Links API

★7.8/10

Best for: Domain Authority scoring and link quality auditing

Domain Authority, Page Authority, and Spam Score via API. The standalone Links API can be purchased without a full Moz Pro subscription. DA remains one of the most widely referenced SEO metrics.

Why I like it:Love it or hate it, Domain Authority is still the most commonly referenced SEO metric in the industry. If your clients or prospects care about DA, Moz is the authoritative source. Spam Score is also genuinely useful for link audits.

Key Features

Domain Authority and Page AuthoritySpam Score for link quality assessmentReferring domain counts and anchor textTop pages by link equityStandalone API pricing availableFree tier: 10 requests/month

✓Pros

Domain Authority is industry standard
Standalone API option available
Spam Score useful for link audits

✗Cons

Smaller link index than Ahrefs
Expensive for the data you get
Free tier is tiny

Review coming soonVisit Moz Links API →

Semrush API

Best Keyword Data

★8.7/10

Best for: Competitive keyword intelligence and traffic analytics

The most comprehensive keyword and competitive intelligence API. 25+ billion keywords across 140+ countries. Covers organic keywords, paid keywords, traffic analytics, backlinks, and competitive analysis.

Why I like it:No one matches Semrush for competitive keyword data. Being able to pull what any domain ranks for, their estimated traffic, and their paid keywords via API is incredibly powerful for competitive analysis at scale.

Key Features

25+ billion keywords, 140+ countriesDomain organic and paid keyword dataKeyword difficulty and SERP featuresTraffic analytics and competitor dataPosition tracking APIAdvertising research data

✓Pros

Deepest keyword database (25B+ keywords)
Unmatched competitive intelligence
Strong traffic estimates

✗Cons

Full API requires Business plan at 500/month
Credit limits apply
Overkill for SERP-only needs

Review coming soonVisit Semrush API →

#10

Google Search Console API

Essential Free Tool

★9/10

Best for: Every SEO. This is non-negotiable.

The only source of real Google search performance data for sites you own. Queries, impressions, clicks, CTR, and average position. Free with no API costs. Bypasses the 1,000-row export limit in the dashboard.

Why I like it:This is the single most valuable SEO data source, period. It is real Google data, not estimates. The API lets you pull 16 months of historical data beyond the 1,000-row dashboard limit. If you are not using this API, you are leaving data on the table.

Key Features

Real Google search query data (not estimates)Impressions, clicks, CTR, average position16 months of historical dataURL inspection APISitemap managementBeyond the 1,000-row GUI limit

✓Pros

Free with no API costs
Real Google data, not estimates
No row limits via API

✗Cons

Only for verified properties
48-hour data delay
Requires Google Cloud setup

Review coming soonVisit Google Search Console API →

#11

Google PageSpeed Insights API

★8.5/10

Best for: Core Web Vitals monitoring and technical SEO auditing

Lighthouse performance scores and real Chrome UX Report (CrUX) field data via API. Measures Core Web Vitals (LCP, INP, CLS) that Google uses for page experience ranking signals. 25,000 requests per day for free.

Why I like it:Free access to the actual performance data Google uses for ranking. 25,000 daily requests is generous enough to monitor hundreds of client pages. The combination of lab data (Lighthouse) and field data (CrUX) in one API call is powerful.

Key Features

Lighthouse performance scoresCore Web Vitals (LCP, INP, CLS)Chrome UX Report real user data25,000 free requests per dayPerformance recommendationsMobile and desktop analysis

✓Pros

Free with 25,000 daily requests
Real field data from CrUX
Actionable recommendations

✗Cons

One URL per request
No field data for low-traffic pages
Can be slow

Google PageSpeed Insights API screenshot

Review coming soonVisit Google PageSpeed Insights API →

#12

Google Indexing API

★8/10

Best for: Getting new content indexed fast

Submit URLs directly to Google for crawling and indexing. The fastest way to get new pages indexed. Officially for JobPosting and BroadcastEvent schema, but widely used by SEOs for all content types.

Why I like it:When you publish new content for a client and want it in Google's index within hours instead of days, this API is the answer. The 200 requests per day limit is enough for most agencies.

Key Features

Direct URL submission to GoogleFastest indexing method availableBatch URL submission support200 requests per day per propertyStatus checking for submitted URLsFree with Google Cloud project

✓Pros

Free to use
Dramatically faster than natural crawling
Batch submission support

✗Cons

Officially limited to JobPosting/BroadcastEvent
200 requests per day limit
Requires service account setup

Review coming soonVisit Google Indexing API →

How I Chose These

I evaluated each API on five criteria: data quality and coverage, API documentation and developer experience, pricing model and cost-effectiveness for agency use, rate limits and scalability, and compatibility with AI coding tools. I prioritized tools that offer pay-as-you-go or API-only pricing over those that bundle API access with expensive dashboard subscriptions.

Frequently Asked Questions

Not anymore. AI coding tools like Claude Code, Cursor, and GitHub Copilot can write API integration scripts from plain English descriptions. You describe what data you want, the AI writes the code. Basic comfort with running scripts helps, but you do not need traditional programming skills.

Serper at $0.30 per 1,000 queries with 2,500 free searches per month. For a more complete solution covering SERP data plus keyword volumes, DataForSEO starts at $0.002 per SERP query with no minimum spend.

For data access, yes. You can get rankings, keywords, backlinks, and technical audit data via APIs for significantly less money. What you lose is the GUI for quick manual lookups and the convenience of pre-built reports. Most agencies use a mix: APIs for automated workflows and a dashboard tool for ad-hoc research.

Ahrefs has the largest and most frequently updated backlink index. For link quality metrics specifically, Majestic's Trust Flow is highly regarded. For budget-friendly backlink data, DataForSEO's Backlinks API is a solid alternative at a fraction of the cost.

Absolutely. Google Search Console API gives you real search performance data, PageSpeed Insights API provides Core Web Vitals monitoring, and the Indexing API speeds up content indexing. These three free APIs cover the foundations. Add paid APIs like DataForSEO or Serper when you need competitive data or SERP tracking.