diff --git a/public/app/features/alerting/unified/api/onCallApi.ts b/public/app/features/alerting/unified/api/onCallApi.ts
index 6a71824a4fa..fdb08f9f991 100644
--- a/public/app/features/alerting/unified/api/onCallApi.ts
+++ b/public/app/features/alerting/unified/api/onCallApi.ts
@@ -38,13 +38,13 @@ export interface OnCallConfigChecks {
   is_integration_chatops_connected: boolean;
 }
 
-const getProxyApiUrl = (path: string) => `/api/plugin-proxy/${SupportedPlugin.OnCall}${path}`;
+const getProxyApiUrl = (path: string) => `/api/plugins/${SupportedPlugin.OnCall}/resources${path}`;
 
 export const onCallApi = alertingApi.injectEndpoints({
   endpoints: (build) => ({
     grafanaOnCallIntegrations: build.query<OnCallIntegrationDTO[], void>({
       query: () => ({
-        url: getProxyApiUrl('/api/internal/v1/alert_receive_channels/'),
+        url: getProxyApiUrl('/alert_receive_channels/'),
         // legacy_grafana_alerting is necessary for OnCall.
         // We do NOT need to differentiate between these two on our side
         params: {
@@ -64,14 +64,14 @@ export const onCallApi = alertingApi.injectEndpoints({
     }),
     validateIntegrationName: build.query<boolean, string>({
       query: (name) => ({
-        url: getProxyApiUrl('/api/internal/v1/alert_receive_channels/validate_name/'),
+        url: getProxyApiUrl('/alert_receive_channels/validate_name/'),
         params: { verbal_name: name },
         showErrorAlert: false,
       }),
     }),
     createIntegration: build.mutation<NewOnCallIntegrationDTO, CreateIntegrationDTO>({
       query: (integration) => ({
-        url: getProxyApiUrl('/api/internal/v1/alert_receive_channels/'),
+        url: getProxyApiUrl('/alert_receive_channels/'),
         data: integration,
         method: 'POST',
         showErrorAlert: true,
@@ -80,13 +80,13 @@ export const onCallApi = alertingApi.injectEndpoints({
     }),
     features: build.query<OnCallFeature[], void>({
       query: () => ({
-        url: getProxyApiUrl('/api/internal/v1/features/'),
+        url: getProxyApiUrl('/features/'),
         showErrorAlert: false,
       }),
     }),
     onCallConfigChecks: build.query<OnCallConfigChecks, void>({
       query: () => ({
-        url: getProxyApiUrl('/api/internal/v1/organization/config-checks/'),
+        url: getProxyApiUrl('/organization/config-checks/'),
         showErrorAlert: false,
       }),
     }),
diff --git a/public/app/features/alerting/unified/mocks/server/handlers/plugins/grafana-oncall.ts b/public/app/features/alerting/unified/mocks/server/handlers/plugins/grafana-oncall.ts
index b1d042f54a4..e015cf80f80 100644
--- a/public/app/features/alerting/unified/mocks/server/handlers/plugins/grafana-oncall.ts
+++ b/public/app/features/alerting/unified/mocks/server/handlers/plugins/grafana-oncall.ts
@@ -2,22 +2,22 @@ import { HttpResponse, http } from 'msw';
 
 import { ONCALL_INTEGRATION_V2_FEATURE, OnCallIntegrationDTO } from 'app/features/alerting/unified/api/onCallApi';
 
-const BASE_URL = `/api/plugin-proxy/grafana-oncall-app`;
+const BASE_URL = `/api/plugins/grafana-oncall-app/resources`;
 
 export const getOnCallIntegrationsHandler = (receiveChannels: OnCallIntegrationDTO[] = []) =>
-  http.get(`${BASE_URL}/api/internal/v1/alert_receive_channels`, () => {
+  http.get(`${BASE_URL}/alert_receive_channels`, () => {
     return HttpResponse.json(receiveChannels);
   });
 
 export const getFeaturesHandler = (features = [ONCALL_INTEGRATION_V2_FEATURE]) =>
-  http.get(`${BASE_URL}/api/internal/v1/features`, () => {
+  http.get(`${BASE_URL}/features`, () => {
     return HttpResponse.json(features);
   });
 
 const validateIntegrationNameHandler = (
   invalidNames: string[] = ['grafana-integration', 'alertmanager-integration']
 ) => {
-  return http.get(`${BASE_URL}/api/internal/v1/alert_receive_channels/validate_name`, ({ request }) => {
+  return http.get(`${BASE_URL}/alert_receive_channels/validate_name`, ({ request }) => {
     const url = new URL(request.url);
     const isValid = !invalidNames.includes(url.searchParams.get('verbal_name') ?? '');
     return HttpResponse.json(isValid, {