curl --location --request GET '/rest/api/3/plans/plan'
{"cursor":"","isLast":true,"maxResults":2,"nextPageCursor":"2","total":10,"values":[{"id":"100","issueSources":[{"type":"Project","value":10000}],"name":"Plan 1","scenarioId":"200","status":"Active"},{"id":"200","issueSources":[{"type":"Board","value":20000}],"name":"Plan 2","scenarioId":"300","status":"Trashed"}]}