That assumes a setup with an Airflow Deployment on Astronomer, not local. But you should be able to take guidance on call syntax. Have you tried making a request to an existing endpoint?
If you’re still having trouble, reach out to Astronomer Support - we have a good number of Airflow experts there who can give you some guidance. I’ll make sure to add some local guidelines to that doc I linked to for folks interested in the doing the same.