diff --git a/x-pack/plugins/ml/public/application/services/ml_api_service/index.ts b/x-pack/plugins/ml/public/application/services/ml_api_service/index.ts
index f21e67fe450f4..3552b8f006091 100644
--- a/x-pack/plugins/ml/public/application/services/ml_api_service/index.ts
+++ b/x-pack/plugins/ml/public/application/services/ml_api_service/index.ts
@@ -27,7 +27,6 @@ import type {
   JobStats,
   Datafeed,
   CombinedJob,
-  Detector,
   AnalysisConfig,
   ModelSnapshot,
   IndicesOptions,
@@ -350,15 +349,6 @@ export function mlApiProvider(httpService: HttpService) {
       });
     },
 
-    validateDetector({ detector }: { detector: Detector }) {
-      const body = JSON.stringify(detector);
-      return httpService.http<any>({
-        path: `${ML_INTERNAL_BASE_PATH}/anomaly_detectors/_validate/detector`,
-        method: 'POST',
-        body,
-      });
-    },
-
     forecast({
       jobId,
       duration,
diff --git a/x-pack/plugins/ml/server/lib/ml_client/types.ts b/x-pack/plugins/ml/server/lib/ml_client/types.ts
index 93977257cdc22..ca7b36df8f208 100644
--- a/x-pack/plugins/ml/server/lib/ml_client/types.ts
+++ b/x-pack/plugins/ml/server/lib/ml_client/types.ts
@@ -121,8 +121,7 @@ export type MlClientParams =
   | Parameters<MlClient['updateFilter']>
   | Parameters<MlClient['updateJob']>
   | Parameters<MlClient['updateModelSnapshot']>
-  | Parameters<MlClient['validate']>
-  | Parameters<MlClient['validateDetector']>;
+  | Parameters<MlClient['validate']>;
 
 export type MlGetADParams = Parameters<MlClient['getJobStats']> | Parameters<MlClient['getJobs']>;
 
diff --git a/x-pack/plugins/ml/server/routes/anomaly_detectors.ts b/x-pack/plugins/ml/server/routes/anomaly_detectors.ts
index 8cd9f45a4217e..4c75b7a85556a 100644
--- a/x-pack/plugins/ml/server/routes/anomaly_detectors.ts
+++ b/x-pack/plugins/ml/server/routes/anomaly_detectors.ts
@@ -349,37 +349,6 @@ export function jobRoutes({ router, routeGuard }: RouteInitialization) {
       })
     );
 
-  router.versioned
-    .post({
-      path: `${ML_INTERNAL_BASE_PATH}/anomaly_detectors/_validate/detector`,
-      access: 'internal',
-      options: {
-        tags: ['access:ml:canCreateJob'],
-      },
-      summary: 'Validates detector',
-      description: 'Validates specified detector.',
-    })
-    .addVersion(
-      {
-        version: '1',
-        validate: {
-          request: {
-            body: schema.any(),
-          },
-        },
-      },
-      routeGuard.fullLicenseAPIGuard(async ({ mlClient, request, response }) => {
-        try {
-          const body = await mlClient.validateDetector({ body: request.body });
-          return response.ok({
-            body,
-          });
-        } catch (e) {
-          return response.customError(wrapError(e));
-        }
-      })
-    );
-
   router.versioned
     .delete({
       path: `${ML_INTERNAL_BASE_PATH}/anomaly_detectors/{jobId}/_forecast/{forecastId}`,