Creating your own WordPress API involves setting up a custom REST API endpoint in WordPress to expose specific data or functionality from your WordPress website. This can be useful if you want to integrate WordPress with other services, create mobile apps, or perform custom data retrieval and manipulation. Here are the steps to create your own WordPress API:
1. Set Up a WordPress Environment:
Make sure you have a WordPress website up and running. If not, install WordPress on your web server.
2. Install and Activate the REST API Plugin:
WordPress comes with a REST API built-in, so you don’t need to install any additional plugins. However, you might want to make sure that the REST API is enabled and working by default. In most cases, it should be.
In WordPress, the REST API is indeed built-in, and you usually don’t need to install any additional plugins to use it. It’s enabled and available by default in recent versions of WordPress. However, there might be certain scenarios where you need to ensure that the REST API is enabled or where you want to customize its behavior, and that’s where you might use plugins. Here’s more information:
- Built-in REST API: WordPress introduced the REST API as a core feature starting with version 4.4. This means that WordPress itself includes RESTful endpoints that allow you to access various types of data and perform operations. By default, the REST API should be available and functional in a standard WordPress installation.
- Check REST API Status: To check if the REST API is enabled and working on your site, you can simply access the following URL in your web browser:
https://yourdomain.com/wp-json/
If you see a list of available endpoints and information about the REST API, it means that it’s enabled and functional.
- Customizing with Plugins: While the REST API is built-in and should work out of the box, there are plugins available that can help you customize its behavior or add additional functionality. These plugins can be used to extend the API or add custom endpoints. For example, you might use plugins like “WP REST API Customizer” or “WP REST API Controller” to tweak settings or create custom routes.
- Securing the REST API: If you want to add extra security to your REST API, you can use security plugins that specialize in WordPress REST API security. This is especially important if you have sensitive data or you want to restrict access to certain endpoints.
- Testing and Debugging: To test and debug your REST API endpoints, you can use tools like Postman or the built-in developer tools in your web browser. Postman allows you to make HTTP requests to your API endpoints and inspect the responses.
In summary, you typically don’t need to install a separate plugin to enable the WordPress REST API, as it’s included in the core of WordPress. However, you might use plugins to customize or extend its functionality or to enhance its security. The REST API is a powerful feature that allows you to interact with your WordPress site programmatically, making it an essential tool for developers working with WordPress.
3. Decide on Your API Endpoint:
Determine what kind of data or functionality you want to expose through your API. This could be custom post types, custom data, or specific WordPress functionalities.
Here are some examples of API endpoints you might consider creating in WordPress based on the type of data or functionality you want to expose:
Retrieve a List of Posts:
You can create an endpoint that allows you to fetch a list of posts from your WordPress site. For example:
/wp-json/myapi/v1/posts
This endpoint could return a JSON array containing information about all the posts on your site, including their titles, content, and publication dates.
Retrieve a Single Post by ID:
You might want an API endpoint that retrieves a specific post by its ID. For example:
/wp-json/myapi/v1/post/123
This could return detailed information about the post with ID 123.
Custom Post Type Data:
If you have custom post types on your site, you can create endpoints to retrieve data from these custom post types. For instance:
/wp-json/myapi/v1/custom-post-type
This could return a list of custom post type items with their associated data.
Search Functionality:
You can create an API endpoint that allows users to search for posts or custom post type items based on specific criteria, such as keywords, tags, or categories:
/wp-json/myapi/v1/search?query=keyword
User Information:
If you want to expose user-related data, you can create endpoints to retrieve user profiles or specific user information:
/wp-json/myapi/v1/user/1
This could return details about user ID 1.
Custom Functionality:
You can create custom endpoints to perform specific actions or retrieve data based on your site’s unique requirements. For example, you could create an endpoint to fetch statistics, generate dynamic content, or trigger specific actions:
/wp-json/myapi/v1/custom-action
Media Content:
To retrieve media content such as images or videos, you can create endpoints that return the media files’ URLs or metadata:
/wp-json/myapi/v1/media/123
Comments and Interactions:
If you want to expose comments or user interactions, you can create endpoints to retrieve comments on posts or perform actions related to comments:
/wp-json/myapi/v1/comments/post/123
4. Create a Custom Plugin (Optional):
While you can add custom API endpoints in your theme’s functions.php
file, it’s best practice to create a custom plugin to handle this. You can create a new plugin by creating a directory in the wp-content/plugins/
directory and adding a PHP file to it with the necessary code.
Creating a custom plugin for adding custom API endpoints in WordPress is a best practice because it keeps your code organized and separate from the theme. This makes it easier to maintain and allows you to activate or deactivate the functionality independently of your theme. Here’s an example of how to create a custom plugin for adding a simple custom API endpoint:
Step 1: Create a Plugin Directory
In your WordPress installation, navigate to the wp-content/plugins/
directory.
Create a new directory for your custom plugin. Let’s call it “my-custom-api-plugin.”
Step 2: Create a PHP File for the Plugin
Inside the “my-custom-api-plugin” directory, create a PHP file, e.g., “my-custom-api-plugin.php.” This file will serve as the main plugin file.
Step 3: Add Plugin Header and Code
Open “my-custom-api-plugin.php” and add the following plugin header information:
<?php /* Plugin Name: My Custom API Plugin Description: Custom API endpoints for my WordPress site. Version: 1.0 Author: Your Name */ // Add your custom API endpoint code here
This header provides information about your plugin to WordPress.
Step 4: Define Your Custom API Endpoint
Below the plugin header, you can define your custom API endpoint. Here’s an example of how to create a basic custom endpoint that returns a “Hello, World!” message:
// Define a custom API route function custom_api_route() { register_rest_route('myapi/v1', '/hello', array( 'methods' => 'GET', 'callback' => 'custom_api_callback', )); } add_action('rest_api_init', 'custom_api_route'); // Callback function for the custom endpoint function custom_api_callback($request) { $response = array('message' => 'Hello, World!'); return rest_ensure_response($response); }
In this example, we’ve created an endpoint at /myapi/v1/hello
using the GET method. When accessed, it returns a JSON response with a “Hello, World!” message.
Step 5: Activate the Plugin
Save the “my-custom-api-plugin.php” file.
Log in to your WordPress admin dashboard.
Navigate to the “Plugins” section and activate the “My Custom API Plugin” you just created.
Step 6: Test Your Custom API Endpoint
To test your custom API endpoint, access it in your browser or use a tool like Postman. For example:
https://yourdomain.com/wp-json/myapi/v1/hello
You should receive a JSON response with the “Hello, World!” message.
That’s it! You’ve created a custom plugin in WordPress to add a custom API endpoint. You can expand on this example by adding more endpoints and custom functionality as needed for your project.
5. Define Your Custom API Route:
To create a custom API route, you’ll need to use the WordPress REST API functions. Here’s an example of how to define a custom route using a plugin:
function custom_api_route() { register_rest_route('myapi/v1', '/endpoint', array( 'methods' => 'GET', 'callback' => 'custom_api_callback', )); } add_action('rest_api_init', 'custom_api_route');
In this example, we’ve created an endpoint at /myapi/v1/endpoint
using the GET method.
Also, we’ll create a custom API route using the WordPress REST API functions. This route will retrieve a list of books from a fictional book database. You can adapt this example to your specific needs.
// Define a custom API route function custom_api_route() { register_rest_route('myapi/v1', '/books', array( 'methods' => 'GET', 'callback' => 'custom_api_callback', )); } add_action('rest_api_init', 'custom_api_route'); // Callback function for the custom endpoint function custom_api_callback($request) { // In a real-world scenario, you'd retrieve data from your database. // For this example, we'll use sample data. $books = array( array( 'title' => 'Sample Book 1', 'author' => 'Author A', ), array( 'title' => 'Sample Book 2', 'author' => 'Author B', ), // Add more books as needed ); // Return the list of books as a JSON response return rest_ensure_response($books); }
In this example:
- We define a custom API route using
register_rest_route
. The route is located at/myapi/v1/books
and accepts GET requests. - When the
/myapi/v1/books
endpoint is accessed via a GET request, thecustom_api_callback
function is executed. - Inside the
custom_api_callback
function, we simulate data retrieval from a database by creating an array of books. In a real-world scenario, you would replace this with actual data retrieval logic from your database. - We return the list of books as a JSON response using
rest_ensure_response
. The API endpoint will return a JSON array containing book titles and authors.
Now, if you access the following URL in your browser or through an API tool like Postman, you should receive a JSON response with the list of books:
https://yourdomain.com/wp-json/myapi/v1/books
Remember that in practice, you would replace the sample data retrieval logic with code to fetch data from your WordPress database or any external source you need for your custom API endpoint.
6. Implement the Callback Function:
You need to implement the callback function that will be executed when your API endpoint is accessed. This function should return the data you want to expose through the API.
function custom_api_callback($request) { // Your logic to fetch and return data goes here }
For example, we’ll create a callback function for a custom API endpoint that retrieves a list of custom post types called “products” from your WordPress site. We’ll assume these products have a title, description, and price.
// Define a custom API route function custom_api_route() { register_rest_route('myapi/v1', '/products', array( 'methods' => 'GET', 'callback' => 'custom_api_callback', )); } add_action('rest_api_init', 'custom_api_route'); // Callback function for the custom endpoint function custom_api_callback($request) { // Initialize an empty array to store product data $products = array(); // Query your custom post type "products" to retrieve data $args = array( 'post_type' => 'product', // Replace with your custom post type name 'posts_per_page' => -1, // Retrieve all products ); $product_query = new WP_Query($args); // Loop through the products and extract relevant information if ($product_query->have_posts()) { while ($product_query->have_posts()) { $product_query->the_post(); $product_data = array( 'title' => get_the_title(), 'description' => get_the_excerpt(), 'price' => get_field('price'), // Assuming you use Advanced Custom Fields for price ); $products[] = $product_data; } wp_reset_postdata(); } // Return the list of products as a JSON response return rest_ensure_response($products); }
In this example:
- We define a custom API route using
register_rest_route
. The route is located at/myapi/v1/products
and accepts GET requests. - When the
/myapi/v1/products
endpoint is accessed via a GET request, thecustom_api_callback
function is executed. - Inside the
custom_api_callback
function, we use aWP_Query
to retrieve data from the custom post type “products.” We assume that this custom post type has a title, description, and price. - We loop through the retrieved products, extracting relevant information (title, description, price) for each product.
- We store the product data in the
$products
array. - Finally, we return the list of products as a JSON response using
rest_ensure_response
. The API endpoint will return a JSON array containing information about each product.
You can customize this example to retrieve and format the data according to your specific needs and the structure of your custom post type.
7. Customize Your API Logic:
Inside the callback function, you can use WordPress functions to retrieve data or perform any custom logic necessary to fulfill the API request. Format the data as needed and return it as a response.
In this example, we’ll customize the API logic inside the callback function to create a custom endpoint that retrieves information about recent posts in a specific category.
Assuming you have a custom API endpoint like /myapi/v1/recent-posts-in-category/{category_slug}
, where {category_slug}
is the slug of the category you want to filter by, here’s how you can implement the callback function:
// Define a custom API route function custom_api_route() { register_rest_route('myapi/v1', '/recent-posts-in-category/(?P<category_slug>[a-zA-Z0-9-]+)', array( 'methods' => 'GET', 'callback' => 'custom_api_callback', )); } add_action('rest_api_init', 'custom_api_route'); // Callback function for the custom endpoint function custom_api_callback($request) { // Retrieve the category slug from the URL parameters $category_slug = $request['category_slug']; // Get the category ID based on the slug $category = get_term_by('slug', $category_slug, 'category'); if (!$category) { // Category not found, return an error return new WP_Error('category_not_found', 'Category not found', array('status' => 404)); } // Query recent posts in the specified category $args = array( 'post_type' => 'post', 'posts_per_page' => 5, // Change this to the desired number of posts 'cat' => $category->term_id, 'orderby' => 'date', 'order' => 'DESC', ); $posts_query = new WP_Query($args); // Initialize an empty array to store post data $recent_posts = array(); // Loop through the recent posts and extract relevant information if ($posts_query->have_posts()) { while ($posts_query->have_posts()) { $posts_query->the_post(); $post_data = array( 'title' => get_the_title(), 'content' => get_the_excerpt(), 'date' => get_the_date(), ); $recent_posts[] = $post_data; } wp_reset_postdata(); } // Return the list of recent posts in the specified category as a JSON response return rest_ensure_response($recent_posts); }
In this example:
- We define a custom API route that includes a dynamic parameter
{category_slug}
in the endpoint URL. This parameter allows us to specify the category for which we want to retrieve recent posts. - Inside the
custom_api_callback
function, we retrieve thecategory_slug
from the URL parameters and use it to fetch the category’s ID. - If the category is not found, we return a 404 error using
WP_Error
. - We then query recent posts in the specified category using
WP_Query
and extract relevant information (title, content, date) for each post. - The post data is stored in the
$recent_posts
array. - Finally, we return the list of recent posts in the specified category as a JSON response using
rest_ensure_response
.
Now, when you access an endpoint like /myapi/v1/recent-posts-in-category/technology
, it will return a JSON response containing information about the most recent posts in the “technology” category or the category you specify in the URL.
8. Test Your API Endpoint:
After setting up your custom API endpoint, test it to ensure it’s working as expected. You can use tools like Postman or cURL to make API requests.
To test your custom API endpoint, you can use various tools and methods. Here, I’ll provide an example using cURL, a command-line tool for making HTTP requests.
Assuming you have set up a custom API endpoint like /myapi/v1/recent-posts-in-category/{category_slug}
as described in the previous example, you can use cURL to test it:
- Open a Terminal or Command Prompt: You’ll use this to run the cURL command.
- Test the API Endpoint: Replace
{category_slug}
with the actual category slug you want to test (e.g., “technology”). -
curl -X GET "https://yourdomain.com/wp-json/myapi/v1/recent-posts-in-category/technology"
Replace
"https://yourdomain.com"
with the actual URL of your WordPress website.
- Run the Command: Press Enter to run the cURL command.
- Inspect the Response: You should receive a JSON response containing information about the most recent posts in the “technology” category or the category you specified. For example:
[ { "title": "Post Title 1", "content": "Post content...", "date": "2023-09-15" }, { "title": "Post Title 2", "content": "Post content...", "date": "2023-09-14" }, // Additional posts... ]
This is a basic example of testing your custom API endpoint using cURL. You can customize the request method (-X GET
in this case) and the URL to test other endpoints or different parameters.
Additionally, you can use tools like Postman, which provides a user-friendly interface for testing APIs and allows you to save and organize your requests for future testing. Here’s how you can test the same endpoint using Postman:
- Open Postman: If you don’t have Postman installed, you can download it from the official website (https://www.postman.com/).
- Create a New Request: Click on “New” to create a new request.
- Set Request Type: In the request type dropdown, select “GET.”
- Enter Request URL: Enter the URL of your API endpoint (e.g.,
"https://yourdomain.com/wp-json/myapi/v1/recent-posts-in-category/technology"
). - Click “Send”: Click the “Send” button to make the API request.
- Inspect the Response: Postman will display the JSON response in the response body tab, similar to what you saw with cURL.
Using Postman, you can easily organize, save, and share your API test requests, making it a powerful tool for API development and testing.
9. Secure Your API (Optional):
Depending on your use case, you may want to implement authentication and authorization mechanisms to secure your API.
Securing your WordPress API is crucial to protect sensitive data and ensure that only authorized users or applications can access your API endpoints. One common way to secure your API is by implementing authentication using API keys. In this example, we’ll demonstrate how to add a simple API key authentication mechanism to your custom API endpoint.
Step 1: Install and Configure a Security Plugin (Optional)
Before implementing API key authentication, you may want to install a security plugin like “Application Passwords” or “JWT Authentication for WP REST API.” These plugins provide authentication mechanisms and simplify the process of securing your API.
Step 2: Create a Custom Plugin for Authentication
- Create a custom plugin (if you haven’t already) as described in a previous example.
Inside your custom plugin, add code to generate and validate API keys. Below is a simplified example:
// Generate a random API key for a user function generate_api_key($user_id) { $api_key = wp_generate_password(32); // Generate a random 32-character API key update_user_meta($user_id, 'api_key', $api_key); // Save the API key to user meta return $api_key; } // Validate API key for a user function validate_api_key($user_id, $api_key) { $stored_api_key = get_user_meta($user_id, 'api_key', true); return ($stored_api_key === $api_key); }
- Modify your custom API endpoint callback function to check for the API key and validate it:
// Callback function for the custom endpoint with API key validation function custom_api_callback($request) { $user = wp_get_current_user(); // Check if the user is authenticated if (!$user->exists()) { return new WP_Error('unauthorized', 'Unauthorized access', array('status' => 401)); } // Retrieve the API key from the request $api_key = $request->get_header('X-API-KEY'); // Validate the API key if (!validate_api_key($user->ID, $api_key)) { return new WP_Error('invalid_api_key', 'Invalid API key', array('status' => 403)); } // Your logic to fetch and return data goes here // ... // Return the response return rest_ensure_response($response_data); }
In this example:
- The
generate_api_key
function generates a random API key and saves it to the user’s meta data. - The
validate_api_key
function checks if the API key sent in the request matches the stored API key for the user. - In the
custom_api_callback
function, we check if the user is authenticated and retrieve the API key from the request headers. - We then validate the API key, and if it’s invalid, we return an error response.
Step 3: Secure the API with API Keys
To secure your API using API keys, you’ll need to:
- Create API keys for authorized users.
- Provide the API keys to authorized clients or users.
- Clients/users should include the API key in the request header when accessing the API, e.g.,
X-API-KEY: your_api_key_here
.
With this approach, only users with valid API keys can access your API, ensuring that it’s secure and protected from unauthorized access. Remember to keep API keys confidential and rotate them periodically for added security.
In the example provided, we implemented a simple API key-based authentication system, not JWT (JSON Web Tokens) authentication. API keys and JWTs are two different authentication mechanisms, each with its own use cases and characteristics. Let me explain the difference:
- API Keys:
- API keys are typically short, random strings of characters.
- They are used as a secret token to authenticate users or applications.
- API keys are often generated by the server and associated with a specific user or application.
- They are relatively easy to implement and are commonly used for authentication in many web services.
- JWT (JSON Web Tokens):
- JWT is a standard for creating JSON-based tokens that represent claims between two parties.
- JWTs consist of three parts: a header, payload, and signature. The payload typically contains information such as user ID or roles.
- JWTs are self-contained and can carry user information, making them suitable for single sign-on (SSO) and stateless authentication.
- They are often used for user authentication, authorization, and secure data exchange between parties.
Whether you should use API keys or JWTs depends on your specific use case and security requirements:
- API Keys: API keys are straightforward to implement and are suitable for scenarios where you want to grant access to specific users or applications without the need to maintain complex token management. They are commonly used for basic authentication and access control.
- JWTs: JWTs are more versatile and can carry additional user-related information, making them suitable for user authentication in web applications and APIs. JWTs are especially useful when you need to implement stateless authentication or share user identity across different services.
In the example I provided earlier, we used API keys because they are a simpler option for demonstrating the concept of authentication in WordPress. However, if you have more advanced authentication and authorization requirements or need to implement single sign-on, JWT authentication might be a better choice. Implementing JWT authentication typically involves additional libraries and configuration.
Implementing JWT (JSON Web Token) authentication in WordPress requires a few additional steps compared to simple API key authentication. Here’s a step-by-step guide on how to implement JWT authentication in WordPress:
Note: To implement JWT authentication, you’ll need to use a third-party library or plugin, as it’s not included in the WordPress core by default. One commonly used library for this purpose is the “WP JWT Authentication” plugin. The following steps assume you are using this plugin, but you can choose alternative solutions as well.
Step 1: Install and Activate the WP JWT Authentication Plugin
- Log in to your WordPress admin dashboard.
- Navigate to “Plugins” and click “Add New.”
- Search for “WP JWT Authentication.”
- Install and activate the “WP JWT Authentication” plugin.
Step 2: Configure JWT Settings
- After activating the plugin, go to “Settings” and select “JWT Authentication.”
- Configure the plugin settings to meet your requirements. You’ll need to set up settings like “JWT Secret Key” and “Token Expiration.”
Step 3: Create JWT Tokens
To create JWT tokens for users, you’ll need to make API requests to the /wp-json/jwt-auth/v1/token
endpoint. You can do this using tools like Postman or programmatically from your application.
Here’s an example of how to request a JWT token for a user:
- Endpoint:
https://yourdomain.com/wp-json/jwt-auth/v1/token
- HTTP Method: POST
- Headers: Content-Type: application/json
- Body (JSON):
{ "username": "your_username", "password": "your_password" }
This request will return a JSON response containing the JWT token. Be sure to replace "your_username"
and "your_password"
with the actual credentials.
Step 4: Secure Your Custom API Endpoint with JWT
Now that you have JWT tokens, you can secure your custom API endpoint by checking for valid JWT tokens in your callback function.
Here’s a simplified example of how to do this:
// Callback function for the custom endpoint with JWT validation function custom_api_callback($request) { // Get the JWT token from the request header $jwt_token = $request->get_header('Authorization'); if (empty($jwt_token)) { return new WP_Error('unauthorized', 'Unauthorized access', array('status' => 401)); } // Verify and decode the JWT token $user = jwt_authenticate_and_get_user($jwt_token); if (is_wp_error($user) || empty($user)) { return new WP_Error('invalid_token', 'Invalid JWT token', array('status' => 403)); } // Your logic to fetch and return data goes here // ... // Return the response return rest_ensure_response($response_data); }
In this example:
- We extract the JWT token from the
Authorization
header. - We use the
jwt_authenticate_and_get_user
function to verify and decode the token, which returns the user if the token is valid. - If the token is invalid or missing, we return appropriate error responses.
Step 5: Test Your JWT-Protected API Endpoint
To test your JWT-protected API endpoint, use tools like Postman or cURL as described in a previous example. You’ll need to include the JWT token in the Authorization
header of your request to access the endpoint.
This is a basic overview of how to implement JWT authentication in WordPress. Depending on your specific requirements, you may need to customize the JWT implementation further, handle token expiration, and manage user authentication and authorization.
10. Document Your API:
Consider documenting your API to make it easier for others to understand how to use it. You can use tools like Swagger or create simple documentation in a README file.
Creating documentation for your API is crucial for helping users, developers, or other stakeholders understand how to use it effectively. While creating comprehensive documentation often involves tools like Swagger or dedicated API documentation generators, you can start with a simple README file as a foundational step. Here’s an example of how to create basic API documentation in a README file for your WordPress API:
# My WordPress API Documentation Welcome to the documentation for the My WordPress API. This API provides access to various data and functionalities on our WordPress website. ## Authentication - This API uses JWT (JSON Web Token) authentication. To access protected endpoints, you need to obtain a JWT token by sending a POST request to the token endpoint with your username and password. ## Base URL - The base URL for our API is `https://yourdomain.com/wp-json/myapi/v1`. ## Endpoints ### 1. Retrieve Recent Posts in a Category - **Endpoint:** `/recent-posts-in-category/{category_slug}` - **Description:** Retrieves the most recent posts in a specified category. - **Method:** GET - **Parameters:** - `{category_slug}` (string, required) - The slug of the category you want to retrieve posts from. - **Example:**
GET https://yourdomain.com/wp-json/myapi/v1/recent-posts-in-category/technology
### 2. Retrieve User Profile - **Endpoint:** `/user-profile` - **Description:** Retrieves the profile of the currently authenticated user. - **Method:** GET - **Authentication:** JWT token required. - **Example:**
GET https://yourdomain.com/wp-json/myapi/v1/user-profile
### 3. Other Endpoints - You can explore other endpoints by browsing our API or referring to our official documentation. ## Error Handling - This API follows standard HTTP status codes for error responses. Common status codes include: - 401 Unauthorized: Authentication failure. - 403 Forbidden: Invalid permissions or token. - 404 Not Found: Resource not found. - 500 Internal Server Error: Server-side error. ## Rate Limiting - Our API does not currently have rate limiting in place, but please use it responsibly to avoid overloading our server. ## Examples To get started, you can use tools like Postman or cURL to make requests to our API endpoints. Don't forget to include your JWT token in the `Authorization` header for protected endpoints. If you encounter any issues or have questions, please contact our support team at support@yourdomain.com. We hope this documentation helps you effectively use our API!
In this example README file:
- We provide an overview of the API, including its authentication method (JWT).
- We specify the base URL for the API.
- We list the available endpoints, including their descriptions, methods, and required parameters.
- We explain how error responses are handled and provide information about rate limiting.
- We offer a brief example section to help users get started with using the API.
- We include a contact email for support or questions.
While this example is a basic starting point, for more extensive API documentation, you might consider using dedicated tools like Swagger, Postman, or API documentation generators that can generate interactive documentation with detailed descriptions, code samples, and test requests. Such tools can enhance the usability and comprehensibility of your API documentation.
11. Monitor and Maintain:
Regularly monitor and maintain your API to ensure it remains functional and secure. Make updates and improvements as needed.
Remember that creating a custom API in WordPress requires some PHP and WordPress development knowledge. Additionally, ensure that your API adheres to best practices and follows security guidelines, especially if it will be used in production environments.