Celery REST API
you can use flower rest API to do the same, as flower is a monitoring tool for celery. But it comes with rest api to add task and all
https://flower.readthedocs.io/en/latest/index.html
Is there a way to use Celery for:

Queue a HTTP call to external URL with Form parameters (HTTP Post to
URL)
The external URL will respond HTTP response, 200, 404, 400 etc, if
response is in form of error non-200-ish response it will retry for
a certain number of retry and will retire as needed
Add Task / Job / Work queue into Celery using REST API, passing the URL to call and Form parameters