How do I enable REST API in WordPress?

How do I enable REST API in WordPress? : Here’s how to install it:Download the WordPress REST API Basic Auth plugin Log in to your WordPress Dashboard and go to Plugins -> Add New Click on the Upload Plugin button and select the plugin’s zip file Go to the Installed Plugins menu and activate the plugin from there
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If you’re a WordPress developer , then you’ve probably heard of the REST API. But what is it and how can it be used in WordPress? In this post, we’ll take a look at what the REST API is and how you can enable it in WordPress.

What is REST API and how can it be used in WordPress?

REST stands for Representational State Transfer. It’s an architectural style for building web applications. The WordPress REST API is a set of PHP classes that allow you to access WordPress data via an HTTP API.

With the WordPress REST API, you can create, read, update, and delete WordPress content using HTTP requests. The WordPress REST API can be used in conjunction with the WordPress JSON API to create a complete headless WordPress application.

How to enable REST API in WordPress?

The WordPress REST API is enabled by default in WordPress 4.7+. To enable the WordPress REST API, you need to add the following code to your wp-config.php file:

define( ‘WP_ REST_API_ ENABLED’, true );

What are the benefits of using REST API in WordPress?

The WordPress REST API has many benefits. It allows you to create a headless WordPress application. It also allows you to decouple the front-end and back-end of your application. This means that you can create a single-page application or a mobile app that uses WordPress as the back-end.

The WordPress REST API also has the advantage of being language agnostic. This means that you can use any programming language that can send HTTP requests to access WordPress data.

How to use REST API in WordPress?

To use the WordPress REST API, you need to send HTTP requests to the WordPress REST API Endpoint. The WordPress REST API Endpoint is a URL that you can add to your WordPress site to access WordPress data.

To get started, you can use the WordPress REST API Console to send HTTP requests to the WordPress REST API Endpoint. The WordPress REST API Console is a web-based interface that allows you to interact with the WordPress REST API.


In this post, we’ve looked at what the REST API is and how you can use it in WordPress. We’ve also seen how to enable the REST API in WordPress and how to use it to create a headless WordPress application.
How do I know if my WordPress REST API is working? : Visit this website at https://yoursite to see if the WordPress REST API is enabled. com/wp-json. It functions if you discover some data that appears to be associated with your WordPress REST API. If you see something, your WordPress REST API is at least enabled.
How do I enable REST API? : To access the REST API Access page, select Administration > Security: REST API Access. Choose the Enable REST API Access check box under REST API Access Settings. To make your changes effective for the currently running configuration, click Apply. To save your settings for good, click Save to Disk.

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Application Programming Interface is a computing interface that communicates and helps exchange information between two separate systems. A system that executes an API involves functions that another system can also perform. It defines requests to be made, how to make the requests, formats that can be used, etc. between two different systems.

API Testing

It is a software testing that evaluates APIs. Its purpose is to determine the functionality,dependability, performance, and security of the interfaces. Rather than standard user inputs such as keyboards and outputs, we use software to send calls, obtain output, and record the response of the system. These tests are totally different from GUI tests and do not emphasize business logic layer of the system architecture. Automation testing of API needs an app that can interact through an API.


REST API, also referred to as RESTful API, is an API that adheres to the restrictions of REST and permits interaction with RESTful web services. An open-source automation method for testing RESTful APIs for web apps is known as REST API testing. XML and JSON-based web applications frequently use it for testing. It works with all methods, including GET, PUT, POST, PATCH, and DELETE. Java library REST is used.

The goal of this test is to send HTTP or HTTPS requests to the REST API and estimate and record its response to ascertain whether or not the REST API is operating properly. Methods used for this testing include GET, PUT, POST, PATCH, and DELETE.

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REST, or representational state transfer, is an architectural strategy and a channel of communication used to create web services. Building APIs makes sense and enables users to connect to and utilize cloud-based services effectively. For accessing a web-based application, an API is a group of programming directives. In other words, it’s a set of instructions that a program uses to communicate with one another and use one another’s features to gather data.

A website that uses APIs is Google, which offers search, translation, calendars, and other services.

There are four main types of API testing methods as follows −

  • GET − This method is use to collect information from the server through a URI (Uniform Resource Identifier). This method must only extract information and should not affect data in any way.

  • POST − This method is used for creating new entities, as wellas to send data to server, such as customer information, file upload, etc. through HTML forms.

  • PUT − This method is used to update an entity or create a new one.

  • DELETE − This method is used to remove existing representations of the target resource provided by a URI.



Protocol An architectural technique independent of protocols. It can also use SOAP webservices.
Simple Object Access Protocol Representational State Transfer
Uses service interfaces for business logic. Uses URI for business logic.
Follows a strict standard. No such strict standard, but few standards can be followed to develop web services.
Needs more bandwidth. Lightweight.
Defines it own security. Inherits security measures from transport.
Uses only XML format to send data in request body. Uses XML, JSON, and other formats to send data in request body.
Uses HTTP, SMTP, and other protocols. Only HTTP protocol.
Rules for binding messages, operation, and others are written in WSDL. Uses WADL format to describe functionalities offered.
Standardized. Non-standardized.
Needs more time learn due to existing rules, bindings, etc. Needs less learning time due to its simplicity.

Different ways of REST API Testing

  • Manual testing

  • Automation testing

Procedure of REST API Testing

This testing needs an application to interact with a sample API. API testing requires the following two things −

  • A tool/framework to operate the API.

  • Code to test the sample REST API. This code must be written down by the tester.

Tools for REST API test cases −

  • Advanced REST Client

  • Postman-REST Client

  • Curl in LINUX

In this article, we will use Advanced REST Client.

How to get Advanced REST Client

The following steps are followed to get Advanced REST Client −

  • Open Google Chrome. Go to Web Store.

  • Search “Advanced REST Client”. OR. Follow the link below, then install the extension. kdfbfbjeloo/

  • Go to app section. Select “Advanced REST Client”.

Steps to test RESTful API

We are using REST Client extension in Google Chrome. Once you are done with the installation, follow the steps below for testing RESTful API −

  • Open Advanced REST Client. Install Advanced REST Client. Launch it after it has been successfully installed.

  • Enter the URL of the API you wish to test in the textbox.

  • Select HTTP method in API testing, for example POST.

  • Give Headers set in the Headers textbox. Then, click Insert headers set.

  • Click USE THIS SET.

  • Provide body content.

    • Open Body Tab.

    • Select the body content type andEditor view.

    • Select Editor view: Raw input.

    • Go to Payload. Pass request body of the API to test as in key-value pairs. For example: {“key-1”:”value-1”, “key-2”:”value-2”}. For post API, pass body or parameters.

  • Submit the details to start testing.

    • Click Send.

    • To view Response headers, click DETAILS.

Authenticating the results

In web API testing, what is mainly determined isresponse code, response message, and response body. The response codes one might face during API testing are −

1xx Informational 4xx Client Error
100 Continue 410 Gone
101 Switching Protocols 411 Length Required
102 Processing 412 Precondition Failed
413 Request Entity Too Large
2xx Success 414 Request-URI Too Long
200 OK 415 Unsupported Media Type
201 Created 416 Requested Range Not Satisfiable
203 Non-Authoritative Information 426 Upgrade Required
204 No Content 428 Precondition Required
205 Reset Content 429 Too Many Requests
206 Partial Content 431 Request Header Fields Too Large
207 Multi-Status (WebDAV) 451 Unavailable For Legal Reasons
Already Reported (WebDAV) 499 Client Closed Request (Nginx)
226 IM Used
5xx Server Error 
3xx Redirection 500 Internal Server Error
300 Multiple Choices 501 Not Implemented
301 Moved Permanently 502 Bad Gateway
302 Found 503 Service Unavailable
303 See Other 504 Gateway Timeout
304 Not Modified 505 HTTP Version Not Supported
305 Use Proxy 506 Variant Also Negotiates (Experimental)
306 (Unused) 507 Insufficient Storage (WebDAV)
307 Temporary Redirect 508 Loop Detected (WebDAV)
308 Permanent Redirect 509 Bandwidth Limit Exceeded
510 Not Extended
4xx Client Error  511 Network Authentication Required
400 Bad Request 598 Network Read Timeout Error
401 Unauthorized 599 Network Connect Timeout Error
402 Payment Required
403 Forbidden
404 Not Found
405 Method Not Allowed
406 Not Acceptable
407 Proxy Authentication Required
408 Request Timeout
409 Conflict

Challenges in API testing

  • Ensuring that the test changes the parameters of API calls so that it verifies the working and detects failures. It involves exploring edge condition and assigning common parameters.

  • Making parameter value combinations for calls with multiple parameters.

  • Identifying the content in which the API calls are done. It involves setting environment conditions, such as peripheral devices, files etc., andinternally storing data that influences the API.

  • Ordering the API calls based on the sequence function is to be executed.

  • To obtain useful results from API from successive calls.

Tool for REST API Test

JMeter − It is a widely used open-source tool used for performance testing. It is developed by Apache and is purely written in Java. It was designed to test functionalities and measuring performance. It can also be used foranalysing and measuring performance of web apps and a variety of services. Initially, it was used to test web apps or FTP apps. Today, it is also used in functional testing, database server testing, and many more.

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This tool enables loading web servers, websites and web apps by simulating real-world behaviours and testing environments. It offers a user-friendly GUI, is easy to install, provides testing strategies, simulation, and other performance testing features. It eases performancetesting tasks.


API is a set of programming instructions to access a web-based application There are four main methods in REST API testing: GET, POST, DELETE and PUT In API testing, response code, response message and response body are checked API testing prevents issues in the API application as well as in the calling application

How do I disable REST API in WordPress? : From your website’s WordPress admin dashboard, you can accomplish this. Simply perform a name-based search on the plugins page. To access the plugin’s primary settings page after installing and activating it, click Settings > Disable REST API.
Read Detail Answer On How do I disable REST API in WordPress?

One of the most widely used APIs is the Representational State Transfer Application Programming Interface (REST API), but using it comes with risks. You run the risk of leaving yourself vulnerable to attacks and data leaks if you don’t know how to secure your website and its data.

Fortunately, you can use a few tips to protect your data when you use the REST API. Tools like theDisable WP REST API plugin and the REST API Toolbox plugin can be indispensable.

In this guide, we discuss how to use the REST API safely. We explain the potential dangers of using this interface, and some tips you can implement to protect your data. Let’s get to work!

ThePotential Dangers of the REST API

The REST API is an interface you can use to communicate with computers or systems to perform functions or retrieve information. This interface acts as a middleman between users (clients) and databases, allowing you to search for services and resources.

Organizations can also manage who has access to what information. The JSON format, which is most frequently used to deliver information, is used by this technology, which operates within the REST framework.

The WordPress REST API is an incredible resource for developers in the context of WordPress. It gives you the ability to build plugins that can modify how you manage WordPress, assist you in creating a new front end, or let you integrate WordPress content into a variety of applications.

Although this API is very helpful, there are some risks involved. Your data could be exposed to leaks, security breaches, and other hacking attacks if you use this API without putting any safety measures in place. For instance, the lack of encryption when using HTTP for your REST API increases your risk of information leaks.

Your data may also be vulnerable due to the REST API’s end-to-end processing. The application as a whole could be compromised by a single weak operation, making it a more attractive target for various attacks.

For instance, hackers might insert phony data into your API. This is referred to as an injection attack, and it can allow the entity to access your information or perform unlawful tasks. As an alternative, they might launch a DoS attack by flooding the system with requests that are linked to bogus return addresses. This might render the API useless.

Additionally, if your security system doesn’t have adequate authentication or encryption safeguards, hackers may be able to get around your defenses and steal confidential information. The outcomes could be catastrophic if this data includes sensitive information like passwords or credit card numbers.

A notorious example of a security breach in the REST API is when hackers stole personal data from more than 50 million Facebook users in 2018 This security vulnerability enabled developers to access authentication tokens and render pages as users

If you’re feeling a little concerned at this point, don’t worry. There are plenty of waysto ensure that you’re using the REST API in the most risk-free way possible – here are seven of the best methods.

1. Use HTTPS

Using Hypertext Transfer Protocol Secure (HTTPS) is one of the simplest ways to secure your REST API connections. HTTPS uses a secure, encrypted connection, and generates a random access token instead of authentication credentials. In other words, it encrypts the data being sent, and thus makes it more secure.

You canenable HTTPS by setting up the integration server to use SSL, creating a public key integration (PKI), and enabling HTTPS in the REST API Description.

2. Give Entities the Least Privilege

Giving entities the least amount of privilege you can while using secure defaults will also help you keep your data more secure. Users should, for instance, only be able to access permissions necessary to complete the tasks they have been given. When a user no longer requires them, you can remove these permissions, which can be set at the lowest level.

In addition, you may want to set a default that users must ask for permission in order to access any data. In this way, you can prevent entities from accessing sensitiveinformation.

3. Use the Disable WP REST API Plugin

With the help of the Disable WP REST API plugin, you can stop visitors from using the API if they are not logged into WordPress:.

As a result, it prevents visitors and other unidentified entities from accessing your data and possibly abusing it. Only authenticated users will be able to access the interface, thanks to this measure.

This plugin isstraightforward to use and lightweight. It has just 22 lines of code, so it can act quickly and efficiently on your WordPress site.

4. Install the REST API Toolbox Plugin

Another top-notch plugin option is the REST API Toolbox. It is a very user-friendly tool that can improve the general security of your website:

This plugin can disable the API for particular users, request authentication before users can access core endpoints, remove core endpoints, and also force SSL connections. In other words, it gives you easy control over what information entities can retrieve and use.

5. Make the REST API Stateless

We recommend keeping yourREST API stateless. This means you should not store any authentications or authorizations with cookies, or make them available within sessions. In statelessness, the client must enter information every time they have a request because nothing is stored.

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Statelessness is essential because it ensures ongoing security. You can implement it by not storing any authorization or authenticationinformation, and requesting credentials for each function in the API.

6. Use Password Hashing

It’s also a good idea to think about hashing every password in your WordPress database. Password hashing is the process of converting passwords into unreadable strings of characters.

Once a password is hashed, you cannot revert it to its original format. So if a user breaches your system and accesses your database via the REST API, the passwords have an additional layer of security:

There are various passwordhashing algorithms, including SHA-256 and SHA-3, and some are now outdated. For example, we don’t recommend using the MD5 algorithm because it is insecure.

7. Keep Things Simple

Overall, keeping the API as simple as possible is one of thesafest things you can do. The more complicated you design your security mechanisms, the more likely it is that you might leave a hole that exposes you to attacks. Focusing on the core concepts and using plugins can reduce the likelihood of making mistakes.


If the proper safety measures aren’t taken, using the REST API can be dangerous. You could become exposed to security flaws, different attacks, and the disclosure of private information, as well as your users. Therefore, using this interface carefully is crucial.

You can use the API safely by following these tips:

  • Use HTTPS.
  • Give entities the least privilege and use secure defaults.
  • Use the Disable WP REST API plugin to prevent visitors from accessing the API.
  • Install theREST API Toolbox plugin to control what information entities can access.
  • Make the REST API stateless to avoid storing authentication information.
  • Use password hashing to protect passwords from hackers.
  • Keep things simple to avoid leaving holes.
  • Do you have any questions about how to secure the REST API? Let us know in the comments section below!

    Imagecredit: Wikimedia Commons.

    Additional Question — How do I enable REST API in WordPress?

    What is the WordPress REST API?

    The posts, pages, taxonomies, and other built-in WordPress data types are represented by REST endpoints (URLs) made available by the WordPress REST API. To search, edit, and add content to your site, your application can send and receive JSON data to these endpoints.

    How do I disable JSON API in WordPress?

    How to Disable WP API JSON?Install WP Hardening Plugin and activate it Go to the ‘Security Fixers’ tab Toggle the key next to ‘Disable WP API JSON’That’s all, you are done

    How do I disable API?

    Disable an API Go to the API Console. From the projects list, select a project or create a new one. If the API Manager page isn’t already open, open the console left side menu and select API Manager. Next to the API you want to disable, click Disable.

    How do I disable XML RPC in WordPress?

    Method 1 – Plugin
    Log into your WordPress Admin Dashboard.
    Click on Plugins >> Add New.
    Search for “Disable XML-RPC” and install the Disable XML-RPC plugin.
    Simply activate the plugin, and that’s it! XML-RPC should be disabled.
    You can recheck using the XML-RPC Validator.

    Does Wordfence block REST API?

    Wordfence prevents username harvesting through the new REST API in WordPress 4. 7. 4. WordPress 7 was published on December 6th, six days prior. It includes a REST API that will be utilized by numerous WordPress plugins, mobile applications, desktop applications, cloud services, and even the WordPress core in the future.

    Is WP JSON a security risk?

    The API is available on almost all websites, and I can quickly identify registered users by going to /wp-json/wp/v2/users. Not because of the technical difficulties, but rather because so much of the website’s data is exposed, this should be regarded as a security issue.

    Is WordPress REST API safe?

    Information on the security and safety of WordPress plugins. We have discovered vulnerabilities in earlier versions of the WordPress REST API (Version 2), which is why we have rated it as Good (current version safe).

    Is WordPress API secure?

    Although this API has many benefits, there are some risks as well. Your data may be exposed to leaks, security breaches, and other hacking attacks if you use this API without putting safety measures in place. You run the risk of information leaks, for instance, if your REST API uses HTTP because there is no encryption.

    What is WP JSON WordPress?

    The WordPress JSON REST API (WP API) is a lightweight data-exchange format based on a subset of the JavaScript programming language. What Is JSON and How Does It Work? Humans find it simple to read and write, and machines find it simple to parse and produce.

    How do I fix JSON errors in WordPress?

    Go to Settings Permalinks in your WordPress dashboard to fix the Invalid JSON Response WordPress error. Verify that the appropriate permalink structure is chosen If it is, nothing needs to be changed. Press the Save Changes button.

    How do I fix invalid JSON error?

    ‘Updating Failed’ Fix. Error: “The Response is Not a Valid JSON Response” Verify the WordPress site’s URL settings. WordPress Permalink Structure should be fixed. restore WordPress. htaccess File. Examine the plugins and themes. Select Classic Editor. The site’s health should be checked. Security Firewall should be disabled.

    Dannie Jarrod

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