how to use custom made API using emergent in Make?
Welcome to the Make community!
You can integrate the API endpoints in Make using the generic HTTP “Make a request” module.
You can also suggest for it to be made in the Idea Exchange. However, do search for a similar request (and also upvote), just in case it has already been suggested to avoid duplicates.

If you need assistance in setting up the built-in generic HTTP modules, please provide additional information about what you have tried in relation to the external service’s Developer API Reference — how you are setting the connection up, a link to the endpoint are you trying to connect to, and what errors you are encountering.
You can also complete this brand new course/tutorial in the Make Academy on how to use external APIs — API calls with HTTP modules
- API and Endpoints
- Header and body
- Multipart/form-data
- OAuth 2.0
Hope this helps! Drop me a message if any other issues come up.
— @samliew
P.S.: investing some effort into the tutorials in the Make Academy will save you lots of time and frustration using Make!