The SEO API Insider’s Guide
Everything we know about SEO API in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
SEO API
The Insider’s Guide
Free lists of search and AI crawler IP addresses
Every plan, grade, refund rule and rival among SERP and SEO data APIs, read from SEO API’s own pages.
Made by Fili, technical SEO consultant · checked Nov 13, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from SEO API’s own pages, its app-store listings and our grades. Every fact in it is on SEO API’s page too, where it is kept up to date. Checked Nov 13, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.4
GPA, above 27 of the 56 other SERP and SEO data APIs we grade
SEO API is a free site that publishes lists of the IP addresses used by search engine and AI crawlers, such as Googlebot, Bingbot, GPTBot and ClaudeBot, each with the count of addresses. It also offers a few small tools: an HTTP status tester, a Cumulative Layout Shift debugger and a disavow file validator.
To get you started, here are 8 things to know about SEO API, taken from its own pages and our grades.
It is not a keyword, ranking or SERP data service.
- 1
Best for free lists of search and AI crawler IPs
SEOAPI.com is a set of free lists of search engine and AI crawler IP addresses, plus a URL parser and a few small SEO tools.
- 2
It is free
SEO API has no paid plan at all. The site describes its SEO APIs as free of charge.
- 3
It runs on Web
Web.
- 4
Search engine bot IPs
Address lists for Googlebot, Bingbot, YandexBot, Applebot, Baiduspider, DuckDuckBot and other search crawlers.
- 5
AI bot IPs
Address lists for OpenAI GPTBot, Anthropic ClaudeBot, PerplexityBot, Amazonbot, Meta-ExternalAgent and CommonCrawl CCBot.
- 6
URL Parse API
A listed API marked new on the site; the pages read do not describe its output.
- 7
A 2.4 GPA, above 27 of 56
That is against the other SERP and SEO data APIs we grade, on value, the free plan, features, ease of use and platforms.
- 8
Keep it
SEO API is free, so making your own would save you nothing.
SEO API at a glance
- Pricing
- Free
- Free plan
- Yes
- Free trial
- None stated
- Runs on
- Web
- Made by
- Fili, technical SEO consultant
- Category
- SERP & SEO Data APIs
- Our grade
- 2.4 GPA, fair
The report card
Best for free lists of search and AI crawler IPs
SEOAPI.com is a set of free lists of search engine and AI crawler IP addresses, plus a URL parser and a few small SEO tools. It is not a keyword, ranking or SERP data service. The pages we read give no rate limits, uptime promise or terms, and it is run by one consultant.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | B | Everything listed is free of charge, which beats the $11.40 mark for data APIs. But the lists are small reference data rather than a data service, so we stop at a B. |
| Free plan and trial | A | All listed APIs and tools are free outright, with no plan or trial to run out. |
| Features | D | Bot IP lists, a URL parse API and a handful of tools such as an HTTP status tester. It does one narrow job and does not give keywords, rankings or search results. |
| Ease of use | C | No store rating on record. Lists are easy to read, but using them as an API means calling them from your own code. |
| Platforms and integrations | C | Web pages and simple APIs only, with no integrations listed. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who SEO API is for
- Fits if you need to check whether a visitor really is Googlebot or an AI crawler
- Works for technical SEOs who want a quick URL parser or HTTP status checker
Who it is not for
- Not for you if you want rankings, keywords or SERP data: it does not provide them
- Watch out: no rate limits, uptime commitment or terms were stated on the pages we read
- Skip it if you need a company behind it: it is run by an individual consultant
- Too light for a team that needs support, as no support channel is listed
Good to know
Good for
- Checking whether a visitor's IP belongs to a known search or AI crawler
- Building crawler allow lists without paying for data
Worth knowing
- It is a set of free reference lists and small tools, not a keyword, ranking or SERP data service.
- The pages read do not state rate limits, an uptime commitment or terms of use.
- It is run by an individual technical SEO consultant, not a company with a pricing page.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
Free
No paid plan at all
SEO API is free to use.
But the lists are small reference data rather than a data service, so we stop at a B.
Free
$0
All listed APIs and tools are offered free of charge.
The free plan
The site describes its SEO APIs as free of charge.
Read from seoapi.com on Nov 13, 2026.
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
1
Place it runs: Web
Free lists of search and AI crawler IP addresses. Here is what it does, as its own site describes it, and what it covers: public API, page speed.
Bot IP lists, a URL parse API and a handful of tools such as an HTTP status tester.
- Search engine bot IPs
- Address lists for Googlebot, Bingbot, YandexBot, Applebot, Baiduspider, DuckDuckBot and other search crawlers.
- AI bot IPs
- Address lists for OpenAI GPTBot, Anthropic ClaudeBot, PerplexityBot, Amazonbot, Meta-ExternalAgent and CommonCrawl CCBot.
- URL Parse API
- A listed API marked new on the site; the pages read do not describe its output.
- SEO toolbox
- An HTTP Status Tester, a Cumulative Layout Shift debugger and a disavow file validator.
Where it runs
- Web
What it works with
Its own pages name no integrations.
SEO API is made by Fili, technical SEO consultant.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
27/56
Other SERP and SEO data APIs it is graded above
SEO API's GPA of 2.4 is higher than 27 of the 56 other SERP and SEO data APIs we grade, and level with 19.
It stands best on free plan and trial (A, above 56 of 56) and worst on features (D, above 0).
SEO API has no paid plan.
On features, ease of use and platforms it scores 1.7 out of 4, and no tool on the category's chart scores higher without costing more.
Each grade against the category
Every bar is all 57 SERP and SEO data APIs we grade, cut by the letter each got. SEO API’s own letter is outlined.
- BValue for moneyAbove 35 of 56
- AFree plan and trialAbove 56 of 56
- DFeaturesAbove 0 of 56
- CEase of useAbove 6 of 56
- CPlatforms and integrationsAbove 0 of 56
Price against what you get
Each dot is one of 41 SERP and SEO data APIs. Further left costs less; higher up scores better on features, ease of use and platforms. SEO API is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
SEO API is free, so making your own would save you nothing.
And it is not the kind of software a weekend replaces.
What you could not
- Speed tests run from real browsers on a schedule.
- An API that other software can build on.
What this rests on. SEO 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.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
SEO Score API, DomDetailer, DataForSEO and Keyword Tool API
The 4 tools SEO API is most often weighed against, with where each one differs from it.
- 2.6GPA
SEO Score API
Free plan · from $5/mo
SEO audit API that scores any URL on 80+ checks, AI readability too.
- SEO API also covers page speed.
- SEO Score API also covers site audit and AI search visibility.
- 2.2GPA
DomDetailer
From $34 one-time
Bulk Moz, Majestic and backlink lookups on credits that never expire.
- SEO API has a free plan. DomDetailer does not.
- Only DomDetailer lists a Windows app.
- SEO API also covers page speed.
- 2.8GPA
DataForSEO
Free trial · from $50
Pay-as-you-go APIs for SERP, keyword, backlink and AI mention data.
- SEO API has a free plan. DataForSEO does not, though it has a free trial.
- SEO API also covers page speed.
- DataForSEO also covers keyword research, site audit, backlink analysis, AI search visibility and sERP API.
- 1.8GPA
Keyword Tool API
From $68/mo
Keyword suggestion and search volume API across 17 search platforms.
- SEO API has a free plan. Keyword Tool API does not.
- SEO API also covers page speed.
- Keyword Tool API also covers keyword research.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
12
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is SEO API free?
Yes. SEO API is free to use.
How much does SEO API cost?
SEO API lists one plan. Free: $0.
What platforms does SEO API work on?
SEO API is available on Web.
Does SEO API have an Android app?
No Android app was listed when its pages were read on Nov 13, 2026. SEO API is listed for Web.
Does SEO API have an iPhone app?
No iPhone app was listed when its pages were read on Nov 13, 2026. SEO API is listed for Web.
Is SEO API open source?
SEO API is not described as open source on its own site, as read on Nov 13, 2026.
Does SEO API have an API?
Yes. SEO API offers a public API, according to its own site.
Who makes SEO API?
SEO API is made by Fili, technical SEO consultant.
What are the alternatives to SEO API?
The closest alternatives to SEO API in our directory are SEO Score API, DomDetailer, DataForSEO and Keyword Tool API.
How does SEO API compare with other SERP and SEO data APIs?
SEO API's GPA of 2.4 is higher than 27 of the 56 other SERP and SEO data APIs we grade, and level with 19.
Is SEO API good value for money?
ToolGPA grades SEO API B for value for money. SEO API has no paid plan.
Could I make my own version of SEO API?
SEO API is free, so making your own would save you nothing. And it is not the kind of software a weekend replaces.
Where this guide comes from
The prices, plans, platforms and features were read from SEO API’s own pages on Nov 13, 2026, and the grades were given on Nov 13, 2026. Graded from this listing, whose facts were read from SEOAPI.com's own page on 13 November 2026. Not based on using the product, and shorter than our full reviews.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Fili, technical SEO consultant. Prices change, so check seoapi.com before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
7,721
Tools graded, in 95 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
7,721
tools graded
95
categories
739
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- SEO API, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/seoapi
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "SEO API: The Insider's Guide", checked Nov 13, 2026. https://toolgpa.com/tools/seoapi
Know someone choosing between SERP and SEO data APIs?
Send them this guide: toolgpa.com/tools/seoapi/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded SERP and SEO data APIs after SEO API, each with an Insider's Guide of its own.
- SERP & SEO Data APIs Insider's GuideEvery one of the 57 SERP and SEO data APIs we grade, compared
- Apify Insider's GuideScraping platform with a store of ready-made Actors, Google included2.8 GPA
- DataForSEO Insider's GuidePay-as-you-go APIs for SERP, keyword, backlink and AI mention data2.8 GPA
- Decodo SERP Scraping API Insider's GuideSERP scraping for Google, Bing and more, inside a web data API2.8 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what SEO API’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. SEO API is a trademark of its owner, and this guide is not made, paid for or approved by Fili, technical SEO consultant. Prices and plans change: check seoapi.com before you buy.