Hit the Tracking API

The main two API's to play with are the Tracking API and the Reporting API. These accept tracking signals and deliver dashboard reports, respectively.  Here we will use the former.

Pageviews

If you have a few sites, try manually simulating some pageviews. If you have three sites configured in Matomo, the following requests will send one pageview each to your three sites. Paste these into the top of your browser one at a time and hit Enter:

• http://THISPARTISDESCRIBEDBELOW.com/matomo/matomo.php?rec=1&idsite=1
• http://THISPARTISDESCRIBEDBELOW.com/matomo/matomo.php?rec=1&idsite=2
• http://THISPARTISDESCRIBEDBELOW.com/matomo/matomo.php?rec=1&idsite=3

For the URL, it will be the same in all three cases.

This is because your pageview data is not sent to your websites, it is sent to your Matomo server, wherever you have deployed it.

So instead of THISPARTISDESCRIBEDBELOW, use this green part, from your tracking code:
(Matomo >> ⚙️ >> Measurables >> Tracking Code)

Goals

It is also possible to pack more into the parameters. Try triggering a Goal conversion in the HTTP Tracking API. Here is an example of a request that will track a Goal conversion for a Goal ID 1 and your Website ID 1.  Paste this into your browser URL slot (the white space at the top of Mozilla Firefox, Microsoft Edge, or similar:
www.example.com/matomo.php?&idsite=1&rec=1&idgoal=1

Again, as in the prior example, you should replace the left end of this with whatever your site uses. Please find the full Tracking API documentation here: https://developer.matomo.org/api-reference/tracking-api