diff --git a/x-pack/plugins/maps/public/classes/sources/es_geo_grid_source/es_geo_grid_source.test.ts b/x-pack/plugins/maps/public/classes/sources/es_geo_grid_source/es_geo_grid_source.test.ts
index 5ac487c713173..129444814a435 100644
--- a/x-pack/plugins/maps/public/classes/sources/es_geo_grid_source/es_geo_grid_source.test.ts
+++ b/x-pack/plugins/maps/public/classes/sources/es_geo_grid_source/es_geo_grid_source.test.ts
@@ -125,7 +125,7 @@ describe('ESGeoGridSource', () => {
     getHttp.mockReturnValue({
       basePath: {
         prepend(path: string) {
-          return `rootdir${path};`;
+          return `rootdir${path}`;
         },
       },
     });
@@ -282,9 +282,11 @@ describe('ESGeoGridSource', () => {
       expect(urlTemplateWithMeta.layerName).toBe('source_layer');
       expect(urlTemplateWithMeta.minSourceZoom).toBe(0);
       expect(urlTemplateWithMeta.maxSourceZoom).toBe(24);
-      expect(urlTemplateWithMeta.urlTemplate).toBe(
-        "rootdir/api/maps/mvt/getGridTile;?x={x}&y={y}&z={z}&geometryFieldName=bar&index=undefined&requestBody=(foobar:ES_DSL_PLACEHOLDER,params:('0':('0':index,'1':(fields:())),'1':('0':size,'1':0),'2':('0':filter,'1':!((geo_bounding_box:(bar:(bottom_right:!(180,-82.67628),top_left:!(-180,82.67628))),meta:(alias:!n,disabled:!f,key:bar,negate:!f)))),'3':('0':query),'4':('0':index,'1':(fields:())),'5':('0':query,'1':(language:KQL,query:'',queryLastTriggeredAt:'2019-04-25T20:53:22.331Z')),'6':('0':aggs,'1':(gridSplit:(aggs:(gridCentroid:(geo_centroid:(field:bar))),geotile_grid:(bounds:!n,field:bar,precision:!n,shard_size:65535,size:65535))))))&requestType=heatmap&geoFieldType=geo_point"
-      );
+      expect(
+        urlTemplateWithMeta.urlTemplate.startsWith(
+          "rootdir/api/maps/mvt/getGridTile/{z}/{x}/{y}.pbf?geometryFieldName=bar&index=undefined&requestBody=(foobar:ES_DSL_PLACEHOLDER,params:('0':('0':index,'1':(fields:())),'1':('0':size,'1':0),'2':('0':filter,'1':!((geo_bounding_box:(bar:(bottom_right:!(180,-82.67628),top_left:!(-180,82.67628))),meta:(alias:!n,disabled:!f,key:bar,negate:!f)))),'3':('0':query),'4':('0':index,'1':(fields:())),'5':('0':query,'1':(language:KQL,query:'',queryLastTriggeredAt:'2019-04-25T20:53:22.331Z')),'6':('0':aggs,'1':(gridSplit:(aggs:(gridCentroid:(geo_centroid:(field:bar))),geotile_grid:(bounds:!n,field:bar,precision:!n,shard_size:65535,size:65535))))))&requestType=heatmap&geoFieldType=geo_point"
+        )
+      ).toBe(true);
     });
 
     it('should include searchSourceId in urlTemplateWithMeta', async () => {
@@ -293,9 +295,13 @@ describe('ESGeoGridSource', () => {
         searchSessionId: '1',
       });
 
-      expect(urlTemplateWithMeta.urlTemplate).toBe(
-        "rootdir/api/maps/mvt/getGridTile;?x={x}&y={y}&z={z}&geometryFieldName=bar&index=undefined&requestBody=(foobar:ES_DSL_PLACEHOLDER,params:('0':('0':index,'1':(fields:())),'1':('0':size,'1':0),'2':('0':filter,'1':!((geo_bounding_box:(bar:(bottom_right:!(180,-82.67628),top_left:!(-180,82.67628))),meta:(alias:!n,disabled:!f,key:bar,negate:!f)))),'3':('0':query),'4':('0':index,'1':(fields:())),'5':('0':query,'1':(language:KQL,query:'',queryLastTriggeredAt:'2019-04-25T20:53:22.331Z')),'6':('0':aggs,'1':(gridSplit:(aggs:(gridCentroid:(geo_centroid:(field:bar))),geotile_grid:(bounds:!n,field:bar,precision:!n,shard_size:65535,size:65535))))))&requestType=heatmap&geoFieldType=geo_point&searchSessionId=1"
-      );
+      expect(
+        urlTemplateWithMeta.urlTemplate.startsWith(
+          "rootdir/api/maps/mvt/getGridTile/{z}/{x}/{y}.pbf?geometryFieldName=bar&index=undefined&requestBody=(foobar:ES_DSL_PLACEHOLDER,params:('0':('0':index,'1':(fields:())),'1':('0':size,'1':0),'2':('0':filter,'1':!((geo_bounding_box:(bar:(bottom_right:!(180,-82.67628),top_left:!(-180,82.67628))),meta:(alias:!n,disabled:!f,key:bar,negate:!f)))),'3':('0':query),'4':('0':index,'1':(fields:())),'5':('0':query,'1':(language:KQL,query:'',queryLastTriggeredAt:'2019-04-25T20:53:22.331Z')),'6':('0':aggs,'1':(gridSplit:(aggs:(gridCentroid:(geo_centroid:(field:bar))),geotile_grid:(bounds:!n,field:bar,precision:!n,shard_size:65535,size:65535))))))&requestType=heatmap&geoFieldType=geo_point"
+        )
+      ).toBe(true);
+
+      expect(urlTemplateWithMeta.urlTemplate.endsWith('&searchSessionId=1')).toBe(true);
     });
   });
 
diff --git a/x-pack/test/api_integration/apis/maps/get_grid_tile.js b/x-pack/test/api_integration/apis/maps/get_grid_tile.js
index 735e183c43166..c929a1af7b150 100644
--- a/x-pack/test/api_integration/apis/maps/get_grid_tile.js
+++ b/x-pack/test/api_integration/apis/maps/get_grid_tile.js
@@ -21,7 +21,7 @@ export default function ({ getService }) {
       const resp = await supertest
         .get(
           `/api/maps/mvt/getGridTile/3/2/3.pbf\
-&geometryFieldName=geo.coordinates\
+?geometryFieldName=geo.coordinates\
 &index=logstash-*\
 &requestBody=(_source:(excludes:!()),aggs:(gridSplit:(aggs:(avg_of_bytes:(avg:(field:bytes)),gridCentroid:(geo_centroid:(field:geo.coordinates))),geotile_grid:(bounds:!n,field:geo.coordinates,precision:!n,shard_size:65535,size:65535))),fields:!((field:%27@timestamp%27,format:date_time),(field:%27relatedContent.article:modified_time%27,format:date_time),(field:%27relatedContent.article:published_time%27,format:date_time),(field:utc_time,format:date_time)),query:(bool:(filter:!((match_all:()),(range:(%27@timestamp%27:(format:strict_date_optional_time,gte:%272015-09-20T00:00:00.000Z%27,lte:%272015-09-20T01:00:00.000Z%27)))),must:!(),must_not:!(),should:!())),runtime_mappings:(),script_fields:(hour_of_day:(script:(lang:painless,source:%27doc[!%27@timestamp!%27].value.getHour()%27))),size:0,stored_fields:!(%27*%27))\
 &requestType=point\
@@ -46,7 +46,7 @@ export default function ({ getService }) {
       const resp = await supertest
         .get(
           `/api/maps/mvt/getGridTile/3/2/3.pbf\
-&geometryFieldName=geo.coordinates\
+?geometryFieldName=geo.coordinates\
 &index=logstash-*\
 &requestBody=(_source:(excludes:!()),aggs:(gridSplit:(aggs:(avg_of_bytes:(avg:(field:bytes)),gridCentroid:(geo_centroid:(field:geo.coordinates))),geotile_grid:(bounds:!n,field:geo.coordinates,precision:!n,shard_size:65535,size:65535))),fields:!((field:%27@timestamp%27,format:date_time),(field:%27relatedContent.article:modified_time%27,format:date_time),(field:%27relatedContent.article:published_time%27,format:date_time),(field:utc_time,format:date_time)),query:(bool:(filter:!((match_all:()),(range:(%27@timestamp%27:(format:strict_date_optional_time,gte:%272015-09-20T00:00:00.000Z%27,lte:%272015-09-20T01:00:00.000Z%27)))),must:!(),must_not:!(),should:!())),runtime_mappings:(),script_fields:(hour_of_day:(script:(lang:painless,source:%27doc[!%27@timestamp!%27].value.getHour()%27))),size:0,stored_fields:!(%27*%27))\
 &requestType=grid\
diff --git a/x-pack/test/api_integration/apis/maps/get_tile.js b/x-pack/test/api_integration/apis/maps/get_tile.js
index dbaaf3f9094ca..f75d43cf0cee3 100644
--- a/x-pack/test/api_integration/apis/maps/get_tile.js
+++ b/x-pack/test/api_integration/apis/maps/get_tile.js
@@ -18,7 +18,7 @@ export default function ({ getService }) {
       const resp = await supertest
         .get(
           `/api/maps/mvt/getTile/2/1/1.pbf\
-&geometryFieldName=geo.coordinates\
+?geometryFieldName=geo.coordinates\
 &index=logstash-*\
 &requestBody=(_source:!f,docvalue_fields:!(bytes,geo.coordinates,machine.os.raw),query:(bool:(filter:!((match_all:()),(range:(%27@timestamp%27:(format:strict_date_optional_time,gte:%272015-09-20T00:00:00.000Z%27,lte:%272015-09-20T01:00:00.000Z%27)))),must:!(),must_not:!(),should:!())),runtime_mappings:(),script_fields:(),size:10000,stored_fields:!(bytes,geo.coordinates,machine.os.raw))\
 &geoFieldType=geo_point`
@@ -49,7 +49,7 @@ export default function ({ getService }) {
         // requestBody sets size=1 to force count exceeded
         .get(
           `/api/maps/mvt/getTile/2/1/1.pbf\
-&geometryFieldName=geo.coordinates\
+?geometryFieldName=geo.coordinates\
 &index=logstash-*\
 &requestBody=(_source:!f,docvalue_fields:!(bytes,geo.coordinates,machine.os.raw),query:(bool:(filter:!((match_all:()),(range:(%27@timestamp%27:(format:strict_date_optional_time,gte:%272015-09-20T00:00:00.000Z%27,lte:%272015-09-20T01:00:00.000Z%27)))),must:!(),must_not:!(),should:!())),runtime_mappings:(),script_fields:(),size:1,stored_fields:!(bytes,geo.coordinates,machine.os.raw))\
 &geoFieldType=geo_point`