How can i integrate jira and salesforce using REST API without any connectors or tools in between ?
You need some form of connector - it's impossible to "integrate" two systems that don't have a connector without creating something.
Either you need to add something to salesforce to run the data exchange over REST, or the other way around - add something into JIRA that can talk to Salesforce (note that the JIRA addon that provides Salesforce integration is that route)
There's no need to have anything in-between them, they can talk directly to each other, but you need to find or write something to actually do that.
It looks like you're new here. Sign in or register to get started.