Hi Vijay,
Unfortunately, I wouldn't really be able to walk you through a step by step process for a full connection to a third party API, I have never implemented one myself. Whenever I have integrated with another service myself I have made use of services like Workato. From a high level I do know that when you are integrating with a third party service and you want it to be able to write smoothly back and forth you usually need:
1. The Quick Base API calls set up to pull out or write in any data
2. The third parties API calls to pull out or write in any data to their service
3. An external script or service to manage both of those calls and pull the data from one side, transform it as necessary, and pass it back to the other (This can take the shape of a service like Workato or a custom script written and hosted on a server with built in logic to control timing and triggers, etc. I have no experience with writing and implementing a custom script in this middle step.)
You can find out more about the Quick Base API and what calls you would need to be able to pull out or write in data to Quick Base in our API documentation
here. It is also possible to use our webhook service to fire out a call to another service built off of triggers much like notifications but you would need to write that all our in their API and know your endpoints to send the data to etc. Those just send data out to a source when a record changes in some way in Quick Base that you specify during the set up and does not bring any data back. You can find out more about webhooks
here.
If you have some specific questions on what the Quick Base API calls might do or if you are getting error messages from Quick Base the community or our Care team can help with that. I'm sorry I couldn't provide guidance on a full integration like that but I hope these are at least good starting points for you.