arangosh> db.example.ensureIndex({ type: "skiplist", fields: [ "a", "b" ] }); { "deduplicate" : true, "fields" : [ "a", "b" ], "id" : "example/68951", "isNewlyCreated" : true, "name" : "idx_1646382033803411456", "selectivityEstimate" : 1, "sparse" : false, "type" : "skiplist", "unique" : false, "code" : 201 } arangosh> var indexInfo = db.example.getIndexes().map(function(x) { return x.id; }); arangosh> indexInfo; [ "example/0", "example/68951" ] arangosh> db._index(indexInfo[0]) { "fields" : [ "_key" ], "id" : "example/0", "name" : "primary", "sparse" : false, "type" : "primary", "unique" : true, "code" : 200 } arangosh> db._index(indexInfo[1]) { "deduplicate" : true, "fields" : [ "a", "b" ], "id" : "example/68951", "name" : "idx_1646382033803411456", "sparse" : false, "type" : "skiplist", "unique" : false, "code" : 200 }