Top Picks for Best SEO APIs# SEO APIs
## About SEO APIs
Get top keyword suggestions, search volume, relevance scores, and real-time SERPs with SEO APIs.
## What is an SEO API?
A search engine optimization (SEO) application programming interface (API) consists of code that allows users to retrieve data about the most relevant keywords and keyword phrases that appear in Search Engine Results Pages (SERPs). The retrieved data is determined on the relevance to the keyword or keyword phrase inputted by the user.
## How does an SEO API work exactly?
An API for SEO uses the GET method to retrieve data and the POST method to put the response in a structured format, such as JSON.
## Who is an SEO API for?
Developers who want to save time coding SEO functionality into their applications will find the API for SEO helpful
Businesses that provide marketing services will also find APIs for SEO useful for launching campaigns to improve the online search rankings of their clients' websites.
## Why is an API for SEO important?
APIs for SEO are important tools because they help improve web page performance, brand visibility, and page rankings. In addition to keyword data, developers and other API users may receive information about average page views, URL identifications, domain scores, traffic rankings, and top organic competitors.
## What you can expect from SEO APIs?
Developers can expect to spend less time coding SEO features into their applications. This is because APIs automatically interact with multiple websites to gather the requested data.
Other API users and businesses can expect to increase their rankings when they use APIs for SEO. In all digital industries, better keyword selections and content improvements helpmoutrank a competitor's online presence.
## Are there examples of free SEO APIs?
RapidAPI's Marketplace lists many freemium APIs for SEO. A popular SEO and Search Engine Marketing (SEM) API is Keyword Suggestion by Twinword. The provider has a demo showing average monthly searches, SEO competition, keyword score, and relevance. Its Basic free SEO API plan has a limit of 10 requests per month and charges five cents per extra request over the quota. The next tier level is the Pro plan. Users pay only $25 per month with a quota of 2,000 monthly requests. The per-request rate over the quota for that plan is five cents.
Another free SEO API is Zenserp by Christoph Leitner. It's an API that scrapes (retrieves the top SERPs) in real-time. Its Basic plan has a hard limit of 50 requests per month.
## Best SEO APIs for Developers
Use this collection of APIs to help with keyword research, tracking SERP changes, and other SEO related tasks. APIs in the collection include:
- [SEO Checker](https://rapidapi.com/markusperl/api/seo-checker)
- [Keyword Suggestion](https://rapidapi.com/twinword/api/keyword-suggestion)
- [Hashtagy](https://rapidapi.com/miguel.aka.kelter/api/hashtagy-generate-hashtags)
- [Similar Words](https://rapidapi.com/wordgrabbag/api/similar-words)
## SEO APIs SDKs
All SEO APIs are supported and made available in multiple developer programming languages and SDKs including:
1. Node.js
2. PHP
3. Python
4. Ruby
5. Objective-C
6. Java (Android)
7. C# (.NET)
8. cURL
Just select your preference from any API endpoints page.
[Sign up today for free on RapidAPI](https://rapidapi.com/signup) to begin using SEO APIs!
SERP API is designed to provide you with the top 100 SERP results. From competitor analysis to rank tracking – you will get everything you need to build an innovative and effective solution.
Your Swiss army knife for NLP! Text summarization, sentiment check, text readability analysis, named entity extraction, segmentation, tokenization, SEO slug creation and much more.
Have fun optimizing your content with LinguLab!
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Based on scientific criteria, LinguLab verifies the understandability of your content. You get wording suggestions that you can accept with one single click.
Impress with structure :
Get your content into perfect shape! So you attract the attention of your readers and leave a positive impression at first glance.
Content for readers and machines :
Optimize your texts on the fly, with up to three keywords. Save time and money for subsequent SEO campaigns.
The service returns similar words to words that you enter. It can be helpful for finding new keywords, adding tags, etc. Of particular use is the ability to take as input multiple words - for example, "apple pear" returns fruits, but "apple microsoft" returns tech companies.
The Mozscape API allows you to customize and integrate data from our dynamic Mozscape index right into your own applications. Our Mozscape index is updated frequently to ensure that you're getting the freshest look at the web possible. With billions of links in our index, intelligent metrics, and thorough URL data, our Mozscape API offers unlimited possibilities.