Execute below curl command to fetch data from Puppetdb server
curl -X GET https://<puppetdbserver>:8081/pdb/query/v4 \
--cert $(puppet config print hostcert) \
--key $(puppet config print hostprivkey) \
--cacert $(puppet config print cacert) \
--data-urlencode 'query=resources[certname, type, title, parameters] { exported = true }' > exported2.json
Json should return you resources those are exported
Or use below
curl -X GET https://<masterservername>:8081/pdb/query/v4 --cert $(puppet config print hostcert) --key $(puppet config print hostprivkey) --cacert $(puppet config print cacert) --data-urlencode 'query=resources[certname, type, title, parameters] { exported = true and type = "Test::ABC"}' > exported.json
Test::ABC - is the resource name