A webhook is an event notice sent over the HTTP network, which is also used to send website data. The data is usually "uploaded" to a particular Address and is sent as a POST request. The POST request's data is processed by a script at the URL-specified script's address.

Any application, including online applications, smartphone applications, and PC software applications, can incorporate webhooks. Webhooks, also known as "HTTP triggers," are event alerts sent over HTTP that can be designed to be generated in response to specific occurrences. Although JSON and XML encoding are frequently used, the coder may organize the data however they see fit.

The equivalent software on a web server parses the POST data that is sent to a particular Address. One of the many server-side programming languages, like PHP, JSP, or C#, may be used to write the script. It might carry out one or more tasks, like storing the data in a database, writing it to a particular location, or delivering fresh information back to the source.

There are many different uses for webhooks. Activating and stopping software programs, upgrading client information, alerting writers of software failures, and warning companies of sales are a few examples. Even better, some websites offer Interfaces that let users transmit information to an Address whenever certain occurrences take place. To monitor changes to projects kept in their online folder, coders can use GitHub, which offers a list of occurrences that can activate a notification.

Webhooks are a useful utility, but in order for them to work, the data provider and the web server must be connected via the Internet. A application that can identify and process the POST data must also be present on the server at the target Address. The callback will not function if the script or Internet link are unavailable.