API responses

An API response is the data returned by a web service when a client application sends an API request. This response can be in different formats such as JSON, XML, or plain text, depending on the API's specifications.
An API response typically includes:
  • Status code A numerical code that indicates whether the request was successful or not. Common status codes include 200 for success, 400 for client errors, and 500 for server errors.
  • Response body This is the data that is returned in response to the request.


Here is an example of an API response in JSON format:
perlCopy code{
"status": 200,
"message": "Success",
"data": {
"id": 1234,
"name": "John Doe",
"email": "[email protected]",
"phone": "+1-123-456-7890"
In this example, the response code is "200" which means the request was successful, and the response body includes the requested data in the "data" field, which is an object containing the user's ID, name, email, and phone number.
Another example of an API response in plain text format:
cssCopy codeHTTP/1.1 404 Not Found
Content-Type: text/plain; charset=utf-8
The requested resource was not found.
In this example, the response code is "404" which means the requested resource was not found, and the response body is a plain text message that explains the error.
And here's some other elements that can be included in the response:
  • Headers Metadata that provides additional information about the response, such as the content type or length, caching directives, and authentication.
  • Error messages If the request was unsuccessful, an error message can provide more information about what went wrong.
  • Pagination information If the response includes a large number of results, pagination information can be included to help the client navigate through the data.
  • Rate limiting information If the API has rate limiting in place, information about the remaining requests that can be made in a given time period can be included in the response.