diff --git a/src/plugins/data/server/index_patterns/routes.ts b/src/plugins/data/server/index_patterns/routes.ts
index 6c7b1bf1c9b0c..d0e6789d96ccf 100644
--- a/src/plugins/data/server/index_patterns/routes.ts
+++ b/src/plugins/data/server/index_patterns/routes.ts
@@ -50,19 +50,19 @@ export function registerRoutes(
 
   // Index Patterns API
   registerCreateIndexPatternRoute(router, indexPatternsProvider);
-  registerGetIndexPatternRoute(router);
-  registerDeleteIndexPatternRoute(router);
-  registerUpdateIndexPatternRoute(router);
+  registerGetIndexPatternRoute(router, indexPatternsProvider);
+  registerDeleteIndexPatternRoute(router, indexPatternsProvider);
+  registerUpdateIndexPatternRoute(router, indexPatternsProvider);
 
   // Fields API
-  registerUpdateFieldsRoute(router);
+  registerUpdateFieldsRoute(router, indexPatternsProvider);
 
   // Scripted Field API
-  registerCreateScriptedFieldRoute(router);
-  registerPutScriptedFieldRoute(router);
-  registerGetScriptedFieldRoute(router);
-  registerDeleteScriptedFieldRoute(router);
-  registerUpdateScriptedFieldRoute(router);
+  registerCreateScriptedFieldRoute(router, indexPatternsProvider);
+  registerPutScriptedFieldRoute(router, indexPatternsProvider);
+  registerGetScriptedFieldRoute(router, indexPatternsProvider);
+  registerDeleteScriptedFieldRoute(router, indexPatternsProvider);
+  registerUpdateScriptedFieldRoute(router, indexPatternsProvider);
 
   router.get(
     {
diff --git a/src/plugins/data/server/index_patterns/routes/delete_index_pattern.ts b/src/plugins/data/server/index_patterns/routes/delete_index_pattern.ts
index 5811189839140..9e25d754f8948 100644
--- a/src/plugins/data/server/index_patterns/routes/delete_index_pattern.ts
+++ b/src/plugins/data/server/index_patterns/routes/delete_index_pattern.ts
@@ -21,8 +21,12 @@ import { schema } from '@kbn/config-schema';
 import { IRouter } from '../../../../../core/server';
 import { assertIndexPatternsContext } from './util/assert_index_patterns_context';
 import { handleErrors } from './util/handle_errors';
+import type { IndexPatternsServiceProvider } from '../index_patterns_service';
 
-export const registerDeleteIndexPatternRoute = (router: IRouter) => {
+export const registerDeleteIndexPatternRoute = (
+  router: IRouter,
+  indexPatternsProvider: IndexPatternsServiceProvider
+) => {
   router.delete(
     {
       path: '/api/index_patterns/index_pattern/{id}',
@@ -41,10 +45,15 @@ export const registerDeleteIndexPatternRoute = (router: IRouter) => {
     router.handleLegacyErrors(
       handleErrors(
         assertIndexPatternsContext(async (ctx, req, res) => {
-          const ip = ctx.indexPatterns.indexPatterns!;
+          const savedObjectsClient = ctx.core.savedObjects.client;
+          const elasticsearchClient = ctx.core.elasticsearch.client.asCurrentUser;
+          const indexPatternsService = await indexPatternsProvider.createIndexPatternsService(
+            savedObjectsClient,
+            elasticsearchClient
+          );
           const id = req.params.id;
 
-          await ip.delete(id);
+          await indexPatternsService.delete(id);
 
           return res.ok({
             headers: {
diff --git a/src/plugins/data/server/index_patterns/routes/fields/update_fields.ts b/src/plugins/data/server/index_patterns/routes/fields/update_fields.ts
index 5aed2cbfc09b3..9b0d1ac95c78f 100644
--- a/src/plugins/data/server/index_patterns/routes/fields/update_fields.ts
+++ b/src/plugins/data/server/index_patterns/routes/fields/update_fields.ts
@@ -22,8 +22,12 @@ import { IRouter } from '../../../../../../core/server';
 import { assertIndexPatternsContext } from '../util/assert_index_patterns_context';
 import { handleErrors } from '../util/handle_errors';
 import { serializedFieldFormatSchema } from '../util/schemas';
+import type { IndexPatternsServiceProvider } from '../../index_patterns_service';
 
-export const registerUpdateFieldsRoute = (router: IRouter) => {
+export const registerUpdateFieldsRoute = (
+  router: IRouter,
+  indexPatternsProvider: IndexPatternsServiceProvider
+) => {
   router.post(
     {
       path: '/api/index_patterns/index_pattern/{id}/fields',
@@ -63,7 +67,12 @@ export const registerUpdateFieldsRoute = (router: IRouter) => {
     router.handleLegacyErrors(
       handleErrors(
         assertIndexPatternsContext(async (ctx, req, res) => {
-          const ip = ctx.indexPatterns.indexPatterns!;
+          const savedObjectsClient = ctx.core.savedObjects.client;
+          const elasticsearchClient = ctx.core.elasticsearch.client.asCurrentUser;
+          const indexPatternsService = await indexPatternsProvider.createIndexPatternsService(
+            savedObjectsClient,
+            elasticsearchClient
+          );
           const id = req.params.id;
           const {
             // eslint-disable-next-line @typescript-eslint/naming-convention
@@ -76,7 +85,7 @@ export const registerUpdateFieldsRoute = (router: IRouter) => {
             throw new Error('No fields provided.');
           }
 
-          const indexPattern = await ip.get(id);
+          const indexPattern = await indexPatternsService.get(id);
 
           let changeCount = 0;
           for (const fieldName of fieldNames) {
@@ -106,10 +115,10 @@ export const registerUpdateFieldsRoute = (router: IRouter) => {
             throw new Error('Change set is empty.');
           }
 
-          await ip.updateSavedObject(indexPattern);
+          await indexPatternsService.updateSavedObject(indexPattern);
 
           if (refresh_fields) {
-            await ip.refreshFields(indexPattern);
+            await indexPatternsService.refreshFields(indexPattern);
           }
 
           return res.ok({
diff --git a/src/plugins/data/server/index_patterns/routes/get_index_pattern.ts b/src/plugins/data/server/index_patterns/routes/get_index_pattern.ts
index 3157813d5a902..323dd0512bb59 100644
--- a/src/plugins/data/server/index_patterns/routes/get_index_pattern.ts
+++ b/src/plugins/data/server/index_patterns/routes/get_index_pattern.ts
@@ -21,8 +21,12 @@ import { schema } from '@kbn/config-schema';
 import { IRouter } from '../../../../../core/server';
 import { assertIndexPatternsContext } from './util/assert_index_patterns_context';
 import { handleErrors } from './util/handle_errors';
+import type { IndexPatternsServiceProvider } from '../index_patterns_service';
 
-export const registerGetIndexPatternRoute = (router: IRouter) => {
+export const registerGetIndexPatternRoute = (
+  router: IRouter,
+  indexPatternsProvider: IndexPatternsServiceProvider
+) => {
   router.get(
     {
       path: '/api/index_patterns/index_pattern/{id}',
@@ -41,9 +45,14 @@ export const registerGetIndexPatternRoute = (router: IRouter) => {
     router.handleLegacyErrors(
       handleErrors(
         assertIndexPatternsContext(async (ctx, req, res) => {
-          const ip = ctx.indexPatterns.indexPatterns!;
+          const savedObjectsClient = ctx.core.savedObjects.client;
+          const elasticsearchClient = ctx.core.elasticsearch.client.asCurrentUser;
+          const indexPatternsService = await indexPatternsProvider.createIndexPatternsService(
+            savedObjectsClient,
+            elasticsearchClient
+          );
           const id = req.params.id;
-          const indexPattern = await ip.get(id);
+          const indexPattern = await indexPatternsService.get(id);
 
           return res.ok({
             headers: {
diff --git a/src/plugins/data/server/index_patterns/routes/scripted_fields/create_scripted_field.ts b/src/plugins/data/server/index_patterns/routes/scripted_fields/create_scripted_field.ts
index 6f84f2d729c13..49020a8ae1e98 100644
--- a/src/plugins/data/server/index_patterns/routes/scripted_fields/create_scripted_field.ts
+++ b/src/plugins/data/server/index_patterns/routes/scripted_fields/create_scripted_field.ts
@@ -22,8 +22,12 @@ import { IRouter } from '../../../../../../core/server';
 import { assertIndexPatternsContext } from '../util/assert_index_patterns_context';
 import { handleErrors } from '../util/handle_errors';
 import { fieldSpecSchema } from '../util/schemas';
+import type { IndexPatternsServiceProvider } from '../../index_patterns_service';
 
-export const registerCreateScriptedFieldRoute = (router: IRouter) => {
+export const registerCreateScriptedFieldRoute = (
+  router: IRouter,
+  indexPatternsProvider: IndexPatternsServiceProvider
+) => {
   router.post(
     {
       path: '/api/index_patterns/index_pattern/{id}/scripted_field',
@@ -46,7 +50,12 @@ export const registerCreateScriptedFieldRoute = (router: IRouter) => {
     router.handleLegacyErrors(
       handleErrors(
         assertIndexPatternsContext(async (ctx, req, res) => {
-          const ip = ctx.indexPatterns.indexPatterns!;
+          const savedObjectsClient = ctx.core.savedObjects.client;
+          const elasticsearchClient = ctx.core.elasticsearch.client.asCurrentUser;
+          const indexPatternsService = await indexPatternsProvider.createIndexPatternsService(
+            savedObjectsClient,
+            elasticsearchClient
+          );
           const id = req.params.id;
           const {
             // eslint-disable-next-line @typescript-eslint/naming-convention
@@ -58,7 +67,7 @@ export const registerCreateScriptedFieldRoute = (router: IRouter) => {
             throw new Error('Only scripted fields can be created.');
           }
 
-          const indexPattern = await ip.get(id);
+          const indexPattern = await indexPatternsService.get(id);
 
           if (indexPattern.fields.getByName(field.name)) {
             throw new Error(`Field [name = ${field.name}] already exists.`);
@@ -70,9 +79,9 @@ export const registerCreateScriptedFieldRoute = (router: IRouter) => {
             searchable: true,
           });
 
-          await ip.updateSavedObject(indexPattern);
+          await indexPatternsService.updateSavedObject(indexPattern);
           if (refresh_fields) {
-            await ip.refreshFields(indexPattern);
+            await indexPatternsService.refreshFields(indexPattern);
           }
 
           const fieldObject = indexPattern.fields.getByName(field.name);
diff --git a/src/plugins/data/server/index_patterns/routes/scripted_fields/delete_scripted_field.ts b/src/plugins/data/server/index_patterns/routes/scripted_fields/delete_scripted_field.ts
index f9138742c5ff6..a5951bf69b5da 100644
--- a/src/plugins/data/server/index_patterns/routes/scripted_fields/delete_scripted_field.ts
+++ b/src/plugins/data/server/index_patterns/routes/scripted_fields/delete_scripted_field.ts
@@ -22,8 +22,12 @@ import { IRouter } from '../../../../../../core/server';
 import { ErrorIndexPatternFieldNotFound } from '../../error';
 import { assertIndexPatternsContext } from '../util/assert_index_patterns_context';
 import { handleErrors } from '../util/handle_errors';
+import type { IndexPatternsServiceProvider } from '../../index_patterns_service';
 
-export const registerDeleteScriptedFieldRoute = (router: IRouter) => {
+export const registerDeleteScriptedFieldRoute = (
+  router: IRouter,
+  indexPatternsProvider: IndexPatternsServiceProvider
+) => {
   router.delete(
     {
       path: '/api/index_patterns/index_pattern/{id}/scripted_field/{name}',
@@ -46,11 +50,16 @@ export const registerDeleteScriptedFieldRoute = (router: IRouter) => {
     router.handleLegacyErrors(
       handleErrors(
         assertIndexPatternsContext(async (ctx, req, res) => {
-          const ip = ctx.indexPatterns.indexPatterns!;
+          const savedObjectsClient = ctx.core.savedObjects.client;
+          const elasticsearchClient = ctx.core.elasticsearch.client.asCurrentUser;
+          const indexPatternsService = await indexPatternsProvider.createIndexPatternsService(
+            savedObjectsClient,
+            elasticsearchClient
+          );
           const id = req.params.id;
           const name = req.params.name;
 
-          const indexPattern = await ip.get(id);
+          const indexPattern = await indexPatternsService.get(id);
           const field = indexPattern.fields.getByName(name);
 
           if (!field) {
@@ -63,7 +72,7 @@ export const registerDeleteScriptedFieldRoute = (router: IRouter) => {
 
           indexPattern.fields.remove(field);
 
-          await ip.updateSavedObject(indexPattern);
+          await indexPatternsService.updateSavedObject(indexPattern);
 
           return res.ok({
             headers: {
diff --git a/src/plugins/data/server/index_patterns/routes/scripted_fields/get_scripted_field.ts b/src/plugins/data/server/index_patterns/routes/scripted_fields/get_scripted_field.ts
index 0d8612b1a68a7..194ae78294270 100644
--- a/src/plugins/data/server/index_patterns/routes/scripted_fields/get_scripted_field.ts
+++ b/src/plugins/data/server/index_patterns/routes/scripted_fields/get_scripted_field.ts
@@ -22,8 +22,12 @@ import { IRouter } from '../../../../../../core/server';
 import { ErrorIndexPatternFieldNotFound } from '../../error';
 import { assertIndexPatternsContext } from '../util/assert_index_patterns_context';
 import { handleErrors } from '../util/handle_errors';
+import type { IndexPatternsServiceProvider } from '../../index_patterns_service';
 
-export const registerGetScriptedFieldRoute = (router: IRouter) => {
+export const registerGetScriptedFieldRoute = (
+  router: IRouter,
+  indexPatternsProvider: IndexPatternsServiceProvider
+) => {
   router.get(
     {
       path: '/api/index_patterns/index_pattern/{id}/scripted_field/{name}',
@@ -46,11 +50,16 @@ export const registerGetScriptedFieldRoute = (router: IRouter) => {
     router.handleLegacyErrors(
       handleErrors(
         assertIndexPatternsContext(async (ctx, req, res) => {
-          const ip = ctx.indexPatterns.indexPatterns!;
+          const savedObjectsClient = ctx.core.savedObjects.client;
+          const elasticsearchClient = ctx.core.elasticsearch.client.asCurrentUser;
+          const indexPatternsService = await indexPatternsProvider.createIndexPatternsService(
+            savedObjectsClient,
+            elasticsearchClient
+          );
           const id = req.params.id;
           const name = req.params.name;
 
-          const indexPattern = await ip.get(id);
+          const indexPattern = await indexPatternsService.get(id);
           const field = indexPattern.fields.getByName(name);
 
           if (!field) {
diff --git a/src/plugins/data/server/index_patterns/routes/scripted_fields/put_scripted_field.ts b/src/plugins/data/server/index_patterns/routes/scripted_fields/put_scripted_field.ts
index 92c37a0fd36ae..866ed3747afcc 100644
--- a/src/plugins/data/server/index_patterns/routes/scripted_fields/put_scripted_field.ts
+++ b/src/plugins/data/server/index_patterns/routes/scripted_fields/put_scripted_field.ts
@@ -22,8 +22,12 @@ import { IRouter } from '../../../../../../core/server';
 import { assertIndexPatternsContext } from '../util/assert_index_patterns_context';
 import { handleErrors } from '../util/handle_errors';
 import { fieldSpecSchema } from '../util/schemas';
+import type { IndexPatternsServiceProvider } from '../../index_patterns_service';
 
-export const registerPutScriptedFieldRoute = (router: IRouter) => {
+export const registerPutScriptedFieldRoute = (
+  router: IRouter,
+  indexPatternsProvider: IndexPatternsServiceProvider
+) => {
   router.put(
     {
       path: '/api/index_patterns/index_pattern/{id}/scripted_field',
@@ -46,7 +50,12 @@ export const registerPutScriptedFieldRoute = (router: IRouter) => {
     router.handleLegacyErrors(
       handleErrors(
         assertIndexPatternsContext(async (ctx, req, res) => {
-          const ip = ctx.indexPatterns.indexPatterns!;
+          const savedObjectsClient = ctx.core.savedObjects.client;
+          const elasticsearchClient = ctx.core.elasticsearch.client.asCurrentUser;
+          const indexPatternsService = await indexPatternsProvider.createIndexPatternsService(
+            savedObjectsClient,
+            elasticsearchClient
+          );
           const id = req.params.id;
           const {
             // eslint-disable-next-line @typescript-eslint/naming-convention
@@ -58,7 +67,7 @@ export const registerPutScriptedFieldRoute = (router: IRouter) => {
             throw new Error('Only scripted fields can be put.');
           }
 
-          const indexPattern = await ip.get(id);
+          const indexPattern = await indexPatternsService.get(id);
 
           const oldFieldObject = indexPattern.fields.getByName(field.name);
           if (!!oldFieldObject) {
@@ -71,9 +80,9 @@ export const registerPutScriptedFieldRoute = (router: IRouter) => {
             searchable: true,
           });
 
-          await ip.updateSavedObject(indexPattern);
+          await indexPatternsService.updateSavedObject(indexPattern);
           if (refresh_fields) {
-            await ip.refreshFields(indexPattern);
+            await indexPatternsService.refreshFields(indexPattern);
           }
 
           const fieldObject = indexPattern.fields.getByName(field.name);
diff --git a/src/plugins/data/server/index_patterns/routes/scripted_fields/update_scripted_field.ts b/src/plugins/data/server/index_patterns/routes/scripted_fields/update_scripted_field.ts
index b7e3b666ace81..1c258758dbda8 100644
--- a/src/plugins/data/server/index_patterns/routes/scripted_fields/update_scripted_field.ts
+++ b/src/plugins/data/server/index_patterns/routes/scripted_fields/update_scripted_field.ts
@@ -21,11 +21,14 @@ import { schema } from '@kbn/config-schema';
 import { FieldSpec } from 'src/plugins/data/common';
 import { IRouter } from '../../../../../../core/server';
 import { ErrorIndexPatternFieldNotFound } from '../../error';
-import { assertIndexPatternsContext } from '../util/assert_index_patterns_context';
 import { handleErrors } from '../util/handle_errors';
 import { fieldSpecSchemaFields } from '../util/schemas';
+import type { IndexPatternsServiceProvider } from '../../index_patterns_service';
 
-export const registerUpdateScriptedFieldRoute = (router: IRouter) => {
+export const registerUpdateScriptedFieldRoute = (
+  router: IRouter,
+  indexPatternsProvider: IndexPatternsServiceProvider
+) => {
   router.post(
     {
       path: '/api/index_patterns/index_pattern/{id}/scripted_field/{name}',
@@ -65,56 +68,59 @@ export const registerUpdateScriptedFieldRoute = (router: IRouter) => {
       },
     },
     router.handleLegacyErrors(
-      handleErrors(
-        assertIndexPatternsContext(async (ctx, req, res) => {
-          const ip = ctx.indexPatterns.indexPatterns!;
-          const id = req.params.id;
-          const name = req.params.name;
-          const {
-            // eslint-disable-next-line @typescript-eslint/naming-convention
-            refresh_fields = true,
-          } = req.body;
+      handleErrors(async (ctx, req, res) => {
+        const savedObjectsClient = ctx.core.savedObjects.client;
+        const elasticsearchClient = ctx.core.elasticsearch.client.asCurrentUser;
+        const indexPatternsService = await indexPatternsProvider.createIndexPatternsService(
+          savedObjectsClient,
+          elasticsearchClient
+        );
+        const id = req.params.id;
+        const name = req.params.name;
+        const {
+          // eslint-disable-next-line @typescript-eslint/naming-convention
+          refresh_fields = true,
+        } = req.body;
 
-          const field = ({ ...req.body.field, name } as unknown) as FieldSpec;
+        const field = ({ ...req.body.field, name } as unknown) as FieldSpec;
 
-          const indexPattern = await ip.get(id);
-          let fieldObject = indexPattern.fields.getByName(field.name);
+        const indexPattern = await indexPatternsService.get(id);
+        let fieldObject = indexPattern.fields.getByName(field.name);
 
-          if (!fieldObject) {
-            throw new ErrorIndexPatternFieldNotFound(id, name);
-          }
+        if (!fieldObject) {
+          throw new ErrorIndexPatternFieldNotFound(id, name);
+        }
 
-          if (!fieldObject.scripted) {
-            throw new Error('Only scripted fields can be updated.');
-          }
+        if (!fieldObject.scripted) {
+          throw new Error('Only scripted fields can be updated.');
+        }
 
-          const oldSpec = fieldObject.toSpec();
+        const oldSpec = fieldObject.toSpec();
 
-          indexPattern.fields.remove(fieldObject);
-          indexPattern.fields.add({
-            ...oldSpec,
-            ...field,
-          });
+        indexPattern.fields.remove(fieldObject);
+        indexPattern.fields.add({
+          ...oldSpec,
+          ...field,
+        });
 
-          await ip.updateSavedObject(indexPattern);
-          if (refresh_fields) {
-            await ip.refreshFields(indexPattern);
-          }
+        await indexPatternsService.updateSavedObject(indexPattern);
+        if (refresh_fields) {
+          await indexPatternsService.refreshFields(indexPattern);
+        }
 
-          fieldObject = indexPattern.fields.getByName(field.name);
-          if (!fieldObject) throw new Error(`Could not create a field [name = ${field.name}].`);
+        fieldObject = indexPattern.fields.getByName(field.name);
+        if (!fieldObject) throw new Error(`Could not create a field [name = ${field.name}].`);
 
-          return res.ok({
-            headers: {
-              'content-type': 'application/json',
-            },
-            body: JSON.stringify({
-              field: fieldObject.toSpec(),
-              index_pattern: indexPattern.toSpec(),
-            }),
-          });
-        })
-      )
+        return res.ok({
+          headers: {
+            'content-type': 'application/json',
+          },
+          body: JSON.stringify({
+            field: fieldObject.toSpec(),
+            index_pattern: indexPattern.toSpec(),
+          }),
+        });
+      })
     )
   );
 };
diff --git a/src/plugins/data/server/index_patterns/routes/update_index_pattern.ts b/src/plugins/data/server/index_patterns/routes/update_index_pattern.ts
index d6bfbe65889e9..95d3e7b9406ed 100644
--- a/src/plugins/data/server/index_patterns/routes/update_index_pattern.ts
+++ b/src/plugins/data/server/index_patterns/routes/update_index_pattern.ts
@@ -22,6 +22,7 @@ import { IRouter } from '../../../../../core/server';
 import { assertIndexPatternsContext } from './util/assert_index_patterns_context';
 import { handleErrors } from './util/handle_errors';
 import { fieldSpecSchema, serializedFieldFormatSchema } from './util/schemas';
+import type { IndexPatternsServiceProvider } from '../index_patterns_service';
 
 const indexPatternUpdateSchema = schema.object({
   title: schema.maybe(schema.string()),
@@ -40,7 +41,10 @@ const indexPatternUpdateSchema = schema.object({
   fields: schema.maybe(schema.recordOf(schema.string(), fieldSpecSchema)),
 });
 
-export const registerUpdateIndexPatternRoute = (router: IRouter) => {
+export const registerUpdateIndexPatternRoute = (
+  router: IRouter,
+  indexPatternsProvider: IndexPatternsServiceProvider
+) => {
   router.post(
     {
       path: '/api/index_patterns/index_pattern/{id}',
@@ -63,10 +67,15 @@ export const registerUpdateIndexPatternRoute = (router: IRouter) => {
     router.handleLegacyErrors(
       handleErrors(
         assertIndexPatternsContext(async (ctx, req, res) => {
-          const ip = ctx.indexPatterns.indexPatterns!;
+          const savedObjectsClient = ctx.core.savedObjects.client;
+          const elasticsearchClient = ctx.core.elasticsearch.client.asCurrentUser;
+          const indexPatternsService = await indexPatternsProvider.createIndexPatternsService(
+            savedObjectsClient,
+            elasticsearchClient
+          );
           const id = req.params.id;
 
-          const indexPattern = await ip.get(id);
+          const indexPattern = await indexPatternsService.get(id);
 
           const {
             // eslint-disable-next-line @typescript-eslint/naming-convention
@@ -137,10 +146,10 @@ export const registerUpdateIndexPatternRoute = (router: IRouter) => {
             throw new Error('Index pattern change set is empty.');
           }
 
-          await ip.updateSavedObject(indexPattern);
+          await indexPatternsService.updateSavedObject(indexPattern);
 
           if (doRefreshFields && refresh_fields) {
-            await ip.refreshFields(indexPattern);
+            await indexPatternsService.refreshFields(indexPattern);
           }
 
           return res.ok({