How to find issue types specific to a plugin


I have some plugins installed in Jira like ‘Zephyr’ and ‘X-ray’, and I am using this (/rest/api/2/issuetype) API to get the list of all the issue types available in my Jira instance.

I would like to find all the issue types that are not Jira default issue types but are provided by one of the plugins (Xray or Zephyr). The response of the (rest/api/2/issuetype) API, does not provide any additional details which might help me differentiate. Below is an example of the response of (rest/api/2/issuetype) API for one of the Xray plugin issue type:

    "self": "",
    "id": "11004",
    "description": "Represents a Test Plan",
    "iconUrl": "",
    "name": "Test Plan",
    "subtask": false

So, is there any other API using which I can find if the issue type is provided by a plugin or not?

For example, the field API (rest/api/2/field) provides a ‘schema’ using which I can identify if the field is specific to a plugin or not. In the field API’s response below, using the ‘schema’ I can identify that the field is of Xray plugin.

    "id": "customfield_11913",
    "name": "Manual Test Steps (Export)",
    "custom": true,
    "orderable": true,
    "navigable": true,
    "searchable": true,
    "clauseNames": [
      "Manual Test Steps (Export)"
    "schema": {
      "type": "string",
      "custom": "com.xpandit.plugins.xray:manual-test-steps-export-custom-field",
      "customId": 11913

So is there a similar API available for the issue types as well that helps me find the issue types specific to a plugin?