How to post API with Header and Body

[Avijit (Avijit Das)]

At first try to search in community. Because here already have lots of posts on this.

Calling api using post method-web component

use Do it to debug your blocks [Unbenannt] see also tip 4 here App Inventor: How to Learn | Pura Vida Apps also I’m not sure, if the Web URI block is necessary Taifun