If you’ve built a custom UI for Salesforce, you can use the Salesforce Object Query Language (SOQL)
Description
Is the equivalent of a SELECTSQL statement or the analog of the Jira JQL.
This search enables users to get the list of information about Salesforce objects in a json format (not the value or object directly) which later a user will be able to use to fill out fields in Jira, by means of a script.
Directly you can get / create / update data about Account and Opportunity.
See also