Hi Team, Is there is a way that i can pass json body in post request in airbyte cdk with python?

Yes, you can override this property in the stream: https://github.com/airbytehq/airbyte/blob/9cb4fbfc211825e155a231ec49baa4d7a3695c28/airbyte-cdk/python/airbyte_cdk/sources/streams/http/http.py#L[…]9

how can i write the method for request_body_json

If you override this property it will be used during the request_body_json