SEO Score API review (2026): is the free plan enough?
SEO audit API that scores any URL on 80+ checks, AI readability too
SEO Score API report card
Good · out of 4.0 · graded Oct 24, 2026
Best for SEO scores for single pages from your own code
SEO Score API audits one URL at a time on 80+ checks, AI crawler readability included, and returns a 0 to 100 score, a grade and ranked fixes as JSON. It audits pages only, with no backlinks, keywords or rankings, the deep audit waits on Pro at $39 a month, and the product is still in public beta.
Who SEO Score API is for
- Fits if you want a build to fail when a page's SEO score drops
- Works for developers adding page checks to their own apps or dashboards
Who SEO Score API is not for
- Skip it if you need backlinks, keyword research or rank tracking, which it doesn't do
- Tight if you're on Free, with 20 audits a month and only 2 checks per category shown
- Pricey if you want Deep Site Audits, which start on Pro at $39 a month or $12 for a single audit
- Watch out: extra AI citation checks cost $10 for 500, and the pages don't say which AI engines are checked
- Watch out: the product is labeled as being in public beta
Why SEO Score API gets a 2.6
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- AValue for moneyStarter is $5 a month for 200 audits with all 80+ checks, under 60% of this category's cheaper quarter, and Pro is $39 for 5,000 with 20 deep audits. Google's Lighthouse, one of its listed alternatives, is free, though.
- CFree plan and trialA free plan for good with no card, but tight: 20 audits a month on 50+ checks, showing only 2 checks per category and the top 2 fixes, at 2 requests a minute.
- CFeaturesPage audits done fully: 80+ checks, AI readability, SXO, AEO and AIO scores, monitoring, history and a 14,000+ check deep audit from Pro. It's a smaller job, though: no backlinks, keyword research or rank tracking, which the vendor says to get from Ahrefs or Moz.
- CEase of useJudged on how fast a developer gets a first result: send a URL and get a score back, with Python, Node.js and Go clients and a GitHub Action. No rating on record.
- BPlatforms and integrationsWeb, with an API, Python, Node.js and Go clients, an n8n node, an MCP server, a Claude Code skill and a GitHub Action, plus Vercel and Netlify. No desktop or phone app, so B is the top.
What these grades rest on. Graded from this listing, whose facts were read from SEO Score API's own pages on 23 October 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
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<a href="https://toolgpa.com/tools/seo-score-api#review"><img src="https://toolgpa.com/badge/seo-score-api.svg" alt="SEO Score API: 2.6 GPA on ToolGPA" width="196" height="56"></a>Where SEO Score API stands among SERP and SEO data APIs
SEO Score API's GPA of 2.6 is higher than 31 of the 38 other SERP and SEO data APIs we grade, and level with 3.
It stands best on value for money (A, above 35 of 38) and worst on ease of use (C, above 0).
Its paid plans start at $5 a month, against a middle price of $29.49 for the category: 1 of the 25 others that charge start lower.
On features, ease of use and platforms it scores 2.3 out of 4. 1 tool scores higher and costs less.
Each grade against the category
Every bar is all 39 SERP and SEO data APIs we grade, cut by the letter each got. SEO Score API’s own letter is outlined.
- AValue for moneyAbove 35 of 38, level with 3
- CFree plan and trialAbove 2 of 38, level with 32
- CFeaturesAbove 1 of 38, level with 24
- CEase of useAbove 0 of 38, level with 36
- BPlatforms and integrationsAbove 9 of 38, level with 29
Price against what you get
Each dot is one of 26 SERP and SEO data APIs. Further left costs less, and higher up scores better on features, ease of use and platforms. Point at a dot to see which tool it is.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Keep SEO Score API, or make your own?
Keep it
Nothing SEO Score API does is plain enough to make in a weekend. The 3 things listed below take a company.
It is one of the better ones too: its GPA of 2.6 is higher than 31 of the 38 other SERP and SEO data APIs we grade. It costs $60 a year.
What you could not
- A crawler that checks every page of a site.
- The same prompts asked of ChatGPT, Perplexity, Gemini and Google's AI answers every day, and the answers kept.
- It plugs into other products, GitHub Actions, n8n and Claude Code among them, and has an API.
What this rests on. SEO Score API’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is SEO Score API?
SEO Score API is a REST API that audits a single URL on 80+ checks covering on-page and technical SEO, social tags, performance, accessibility and how readable the page is to AI crawlers, and returns a 0 to 100 score, a letter grade and ranked fixes as JSON. Paid plans add SXO, AEO and AIO scores, AI citation tracking and, from Pro, a deep audit drawn from a catalog of 14,000+ checks. It is in public beta and is made by the SEO agency 45Squared.
Worth knowing
- It audits pages only: no backlinks, keyword research or rank tracking, which the vendor says to get from suites such as Ahrefs or Moz.
- Deep Site Audits come only with Pro (20 a month) and Ultra (100), or as credit packs from $12 for one audit to $499 for 100.
- Extra AI citation checks cost $10 for 500 or $36 for 2,000; the pages read do not say which AI engines are checked.
- The product is labeled as being in public beta.
Key features
- 80+ checks per URL
- Titles, headings, canonical tags, robots.txt, sitemaps, structured data, Open Graph, page weight and accessibility, each marked pass, warning or fail with a fix.
- AI readability and GEO audits
- 26 checks on whether AI crawlers such as GPTBot and ClaudeBot can read a page, including llms.txt and bot access; GEO audits measure visibility to AI search.
- SXO, AEO and AIO scores
- Paid plans score search experience, how well a page answers questions for snippets and AI Overviews, and how easily language models can take it in.
- Deep Site Audit
- An asynchronous audit of about 90 seconds against a 14,000+ check catalog across nine areas, with an AI pass and a scan for leaked API keys.
- Monitoring and history
- Watch scores on a set of URLs, pull a page's score history, run batch audits, and share HTML reports and score badges.
- SDKs, CI and agents
- Python, Node.js and Go clients, an n8n node, an MCP server, a Claude Code skill and a GitHub Action that fails a build when a score drops.
SEO Score API pricing
As of Oct 23, 2026, SEO Score API has a free plan, and paid plans start at $5 per month for 200 audits, billed monthly.
- Starts at
- $5 per month for 200 audits, billed monthly
- Free plan
- 20 audits a month scored on 50+ checks, showing 2 checks per category and the top 2 fixes, at 2 requests a minute. No card needed.
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| Free | $0 | 20 audits a month on 50+ checks, with partial results, no history and no AI citation tracking. |
| Starter | $5per month for 200 audits, billed monthly | All 80+ checks, SXO, AEO and AIO scores, AI citation tracking with 15 prompts, 5 monitored URLs and 30 days of history. |
| Basic | $15per month for 1,000 audits, billed monthly | Adds 1 GEO audit a month, 30 tracked prompts, 10 monitored URLs and 90 days of history. |
| Pro | $39per month for 5,000 audits, billed monthly | 20 Deep Site Audits, 5 GEO audits, 75 tracked prompts, 25 monitored URLs, a year of history and priority support. |
| Ultra | $99per month for 25,000 audits, billed monthly | 100 Deep Site Audits, 10 GEO audits, 200 tracked prompts, 50 monitored URLs, unlimited history and dedicated support. |
| Enterprise | Custom | Custom audit volume and limits on an annual agreement with invoicing. Through sales. |
Read from seoscoreapi.com on Oct 23, 2026. Prices change, so confirm with SEO Score API before you buy.
Ways to pay less
- Annual discountTwo months free with annual billing
SEO Score API bills paid plans yearly for the price of 10 months: Starter is $50 a year and Pro $390, with monthly allowances unchanged.
Stated on seoscoreapi.com
Works with
- GitHub Actions
- n8n
- Claude Code
- Cursor
- Vercel
- Netlify
SEO Score API alternatives
- SEO Score API vs DataForSEO
Free trial · from $50
- SEO Score API vs SEO Site Checkup
Free trial · from $29/mo
- SEO Score API vs Screaming Frog SEO Spider
Free plan · from $279/yr
- SEO Score API vs SEOptimer
Free plan · from $21.75/mo
Common questions
Does SEO Score API have an Android app?
No Android app was listed when its pages were read on Oct 23, 2026. SEO Score API is listed for Web.
Does SEO Score API have an iPhone app?
No iPhone app was listed when its pages were read on Oct 23, 2026. SEO Score API is listed for Web.
Is SEO Score API open source?
SEO Score API is not described as open source on its own site, as read on Oct 23, 2026.
Does SEO Score API have an API?
Yes. SEO Score API offers a public API, according to its own site.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Oct 23, 2026.