diff --git a/app/assets/javascripts/diffs/components/app.vue b/app/assets/javascripts/diffs/components/app.vue
index 35d1a564178f81ee771f6ef24ec691ab032ed8b0..c1d4f6ff08955980bcb25adaa250250d63da4f93 100644
--- a/app/assets/javascripts/diffs/components/app.vue
+++ b/app/assets/javascripts/diffs/components/app.vue
@@ -95,6 +95,10 @@ export default {
       type: String,
       required: true,
     },
+    endpointDiffForPath: {
+      type: String,
+      required: true,
+    },
     endpointCoverage: {
       type: String,
       required: false,
@@ -321,6 +325,7 @@ export default {
       endpoint: this.endpoint,
       endpointMetadata: this.endpointMetadata,
       endpointBatch: this.endpointBatch,
+      endpointDiffForPath: this.endpointDiffForPath,
       endpointCoverage: this.endpointCoverage,
       endpointUpdateUser: this.endpointUpdateUser,
       projectPath: this.projectPath,
diff --git a/app/assets/javascripts/diffs/index.js b/app/assets/javascripts/diffs/index.js
index 7da5ef54b80d62a068036da5474a06e3f38766ab..f6865056b05e6580c755f4c10664b7dc9833128d 100644
--- a/app/assets/javascripts/diffs/index.js
+++ b/app/assets/javascripts/diffs/index.js
@@ -25,6 +25,7 @@ export default function initDiffsApp(store = notesStore) {
         endpoint: dataset.endpoint,
         endpointMetadata: dataset.endpointMetadata || '',
         endpointBatch: dataset.endpointBatch || '',
+        endpointDiffForPath: dataset.endpointDiffForPath || '',
         endpointCoverage: dataset.endpointCoverage || '',
         endpointCodequality: dataset.endpointCodequality || '',
         endpointUpdateUser: dataset.updateCurrentUserPath,
@@ -86,6 +87,7 @@ export default function initDiffsApp(store = notesStore) {
           endpoint: this.endpoint,
           endpointMetadata: this.endpointMetadata,
           endpointBatch: this.endpointBatch,
+          endpointDiffForPath: this.endpointDiffForPath,
           endpointCoverage: this.endpointCoverage,
           endpointCodequality: this.endpointCodequality,
           endpointUpdateUser: this.endpointUpdateUser,
diff --git a/app/assets/javascripts/diffs/store/actions.js b/app/assets/javascripts/diffs/store/actions.js
index 9f90de9abde40cc009ddb3e27cf83613af33bdb1..16c7a3456169fc78ae77a37b7f983469c02b268c 100644
--- a/app/assets/javascripts/diffs/store/actions.js
+++ b/app/assets/javascripts/diffs/store/actions.js
@@ -68,6 +68,7 @@ export const setBaseConfig = ({ commit }, options) => {
     endpoint,
     endpointMetadata,
     endpointBatch,
+    endpointDiffForPath,
     endpointCoverage,
     endpointUpdateUser,
     projectPath,
@@ -81,6 +82,7 @@ export const setBaseConfig = ({ commit }, options) => {
     endpoint,
     endpointMetadata,
     endpointBatch,
+    endpointDiffForPath,
     endpointCoverage,
     endpointUpdateUser,
     projectPath,
diff --git a/app/assets/javascripts/diffs/store/modules/diff_state.js b/app/assets/javascripts/diffs/store/modules/diff_state.js
index 329db1fe2cf1ee283ff95b7be1a3087a22d50de3..593c28f20ecc4cc49ea86594bfb425e18be33ad2 100644
--- a/app/assets/javascripts/diffs/store/modules/diff_state.js
+++ b/app/assets/javascripts/diffs/store/modules/diff_state.js
@@ -16,6 +16,7 @@ export default () => ({
   removedLines: null,
   endpoint: '',
   endpointUpdateUser: '',
+  endpointDiffForPath: '',
   basePath: '',
   commit: null,
   startVersion: null, // Null unless a target diff is selected for comparison that is not the "base" diff
diff --git a/app/assets/javascripts/diffs/store/mutations.js b/app/assets/javascripts/diffs/store/mutations.js
index d2b798245fc0786ebdc6ecd127cc49e7a4c9abfe..04f08e869552af640079f6bf9143aed72addcb21 100644
--- a/app/assets/javascripts/diffs/store/mutations.js
+++ b/app/assets/javascripts/diffs/store/mutations.js
@@ -33,6 +33,7 @@ export default {
       endpoint,
       endpointMetadata,
       endpointBatch,
+      endpointDiffForPath,
       endpointCoverage,
       endpointUpdateUser,
       projectPath,
@@ -46,6 +47,7 @@ export default {
       endpoint,
       endpointMetadata,
       endpointBatch,
+      endpointDiffForPath,
       endpointCoverage,
       endpointUpdateUser,
       projectPath,
diff --git a/app/helpers/merge_requests_helper.rb b/app/helpers/merge_requests_helper.rb
index ec395baef9e1cdb2bd8981fe9aa0cdc4e3cf5e8c..590659be0cb2c64ff98d6fc9a8eb541ab885c4cd 100644
--- a/app/helpers/merge_requests_helper.rb
+++ b/app/helpers/merge_requests_helper.rb
@@ -185,6 +185,7 @@ def diffs_tab_pane_data(project, merge_request, params)
       endpoint_metadata: @endpoint_metadata_url,
       endpoint_batch: diffs_batch_project_json_merge_request_path(project, merge_request, 'json', params),
       endpoint_coverage: @coverage_path,
+      endpoint_diff_for_path: diff_for_path_namespace_project_merge_request_path(format: 'json', id: merge_request.iid, namespace_id: project.namespace.path, project_id: project.path),
       help_page_path: help_page_path('user/project/merge_requests/reviews/suggestions.md'),
       current_user_data: @current_user_data,
       update_current_user_path: @update_current_user_path,
diff --git a/ee/spec/frontend/diffs/components/app_spec.js b/ee/spec/frontend/diffs/components/app_spec.js
index 8407242455520bd4501aa3145c30b992183ca807..6d7910245ffcc84b13de7181390bc244839152bb 100644
--- a/ee/spec/frontend/diffs/components/app_spec.js
+++ b/ee/spec/frontend/diffs/components/app_spec.js
@@ -31,6 +31,7 @@ describe('diffs/components/app', () => {
         endpoint: TEST_ENDPOINT,
         endpointMetadata: `${TEST_HOST}/diff/endpointMetadata`,
         endpointBatch: `${TEST_HOST}/diff/endpointBatch`,
+        endpointDiffForPath: TEST_ENDPOINT,
         endpointCoverage: `${TEST_HOST}/diff/endpointCoverage`,
         endpointCodequality: `${TEST_HOST}/diff/endpointCodequality`,
         projectPath: 'namespace/project',
diff --git a/spec/frontend/diffs/components/app_spec.js b/spec/frontend/diffs/components/app_spec.js
index 513e67ea247857e679b59f21390fa43b0486afa9..ccc892c69ecbf07f7e7e9834bf45b2c2ea9f6577 100644
--- a/spec/frontend/diffs/components/app_spec.js
+++ b/spec/frontend/diffs/components/app_spec.js
@@ -59,6 +59,7 @@ describe('diffs/components/app', () => {
         endpoint: TEST_ENDPOINT,
         endpointMetadata: `${TEST_HOST}/diff/endpointMetadata`,
         endpointBatch: `${TEST_HOST}/diff/endpointBatch`,
+        endpointDiffForPath: TEST_ENDPOINT,
         endpointCoverage: `${TEST_HOST}/diff/endpointCoverage`,
         endpointCodequality: '',
         projectPath: 'namespace/project',
diff --git a/spec/frontend/diffs/store/actions_spec.js b/spec/frontend/diffs/store/actions_spec.js
index 78765204322d9faba4c6ced5affe0af7bfd2ccac..d92a0f4b8ae7dae44a86975e873171cc7d3b9983 100644
--- a/spec/frontend/diffs/store/actions_spec.js
+++ b/spec/frontend/diffs/store/actions_spec.js
@@ -69,6 +69,7 @@ describe('DiffsStoreActions', () => {
       const endpoint = '/diffs/set/endpoint';
       const endpointMetadata = '/diffs/set/endpoint/metadata';
       const endpointBatch = '/diffs/set/endpoint/batch';
+      const endpointDiffForPath = '/diffs/set/endpoint/path';
       const endpointCoverage = '/diffs/set/coverage_reports';
       const projectPath = '/root/project';
       const dismissEndpoint = '/-/user_callouts';
@@ -83,6 +84,7 @@ describe('DiffsStoreActions', () => {
         {
           endpoint,
           endpointBatch,
+          endpointDiffForPath,
           endpointMetadata,
           endpointCoverage,
           projectPath,
@@ -93,6 +95,7 @@ describe('DiffsStoreActions', () => {
         {
           endpoint: '',
           endpointBatch: '',
+          endpointDiffForPath: '',
           endpointMetadata: '',
           endpointCoverage: '',
           projectPath: '',
@@ -106,6 +109,7 @@ describe('DiffsStoreActions', () => {
               endpoint,
               endpointMetadata,
               endpointBatch,
+              endpointDiffForPath,
               endpointCoverage,
               projectPath,
               dismissEndpoint,