diff --git a/ghost/core/core/server/api/endpoints/comments-members.js b/ghost/core/core/server/api/endpoints/comments-members.js
index 385f77edb8..2bbe91d7e0 100644
--- a/ghost/core/core/server/api/endpoints/comments-members.js
+++ b/ghost/core/core/server/api/endpoints/comments-members.js
@@ -10,6 +10,7 @@ module.exports = {
             cacheInvalidate: false
         },
         options: [
+            'post_id',
             'include',
             'page',
             'limit',
diff --git a/ghost/core/core/server/services/comments/CommentsController.js b/ghost/core/core/server/services/comments/CommentsController.js
index 3463a3f9bb..c3865255dd 100644
--- a/ghost/core/core/server/services/comments/CommentsController.js
+++ b/ghost/core/core/server/services/comments/CommentsController.js
@@ -35,6 +35,22 @@ module.exports = class CommentsController {
      * @param {Frame} frame
      */
     async browse(frame) {
+        if (frame.options.post_id) {
+            if (frame.options.filter) {
+                frame.options.mongoTransformer = function (query) {
+                    return {
+                        $and: [
+                            {
+                                post_id: frame.options.post_id
+                            },
+                            query
+                        ]
+                    };
+                };
+            } else {
+                frame.options.filter = `post_id:${frame.options.post_id}`;
+            }
+        }
         return this.service.getComments(frame.options);
     }
 
diff --git a/ghost/core/core/server/web/comments/routes.js b/ghost/core/core/server/web/comments/routes.js
index 59f6b160b4..b2c731c34c 100644
--- a/ghost/core/core/server/web/comments/routes.js
+++ b/ghost/core/core/server/web/comments/routes.js
@@ -21,6 +21,7 @@ module.exports = function apiRoutes() {
     router.use(membersService.middleware.loadMemberSession);
 
     router.get('/', http(api.commentsMembers.browse));
+    router.get('/post/:post_id', http(api.commentsMembers.browse));
     router.get('/:id', http(api.commentsMembers.read));
     router.post('/', http(api.commentsMembers.add));
     router.put('/:id', http(api.commentsMembers.edit));
diff --git a/ghost/core/test/e2e-api/members-comments/__snapshots__/comments.test.js.snap b/ghost/core/test/e2e-api/members-comments/__snapshots__/comments.test.js.snap
index 0b1ec71bc2..a05dec9129 100644
--- a/ghost/core/test/e2e-api/members-comments/__snapshots__/comments.test.js.snap
+++ b/ghost/core/test/e2e-api/members-comments/__snapshots__/comments.test.js.snap
@@ -1666,6 +1666,94 @@ Object {
 }
 `;
 
+exports[`Comments API when commenting enabled for all when authenticated Can browse all comments of a post (legacy) 1: [body] 1`] = `
+Object {
+  "comments": Array [
+    Object {
+      "count": Object {
+        "likes": Any<Number>,
+        "replies": Any<Number>,
+      },
+      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "edited_at": null,
+      "html": "<p>First.</p>",
+      "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
+      "liked": Any<Boolean>,
+      "member": Object {
+        "avatar_image": null,
+        "expertise": null,
+        "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
+        "name": "Mr Egg",
+        "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
+      },
+      "replies": Array [
+        Object {
+          "count": Object {
+            "likes": Any<Number>,
+          },
+          "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+          "edited_at": null,
+          "html": "<p>Really original</p>",
+          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
+          "liked": Any<Boolean>,
+          "member": Object {
+            "avatar_image": null,
+            "expertise": null,
+            "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
+            "name": null,
+            "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
+          },
+          "status": "published",
+        },
+      ],
+      "status": "published",
+    },
+    Object {
+      "count": Object {
+        "likes": Any<Number>,
+        "replies": 0,
+      },
+      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "edited_at": null,
+      "html": "<p>This is a message</p><p></p><p>New line</p>",
+      "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
+      "liked": Any<Boolean>,
+      "member": Object {
+        "avatar_image": null,
+        "expertise": null,
+        "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
+        "name": null,
+        "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
+      },
+      "replies": Array [],
+      "status": "published",
+    },
+  ],
+  "meta": Object {
+    "pagination": Object {
+      "limit": 15,
+      "next": null,
+      "page": 1,
+      "pages": 1,
+      "prev": null,
+      "total": 2,
+    },
+  },
+}
+`;
+
+exports[`Comments API when commenting enabled for all when authenticated Can browse all comments of a post (legacy) 2: [headers] 1`] = `
+Object {
+  "access-control-allow-origin": "*",
+  "cache-control": "no-cache, private, no-store, must-revalidate, max-stale=0, post-check=0, pre-check=0",
+  "content-length": "1118",
+  "content-type": "application/json; charset=utf-8",
+  "etag": StringMatching /\\(\\?:W\\\\/\\)\\?"\\(\\?:\\[ !#-\\\\x7E\\\\x80-\\\\xFF\\]\\*\\|\\\\r\\\\n\\[\\\\t \\]\\|\\\\\\\\\\.\\)\\*"/,
+  "vary": "Accept-Encoding",
+  "x-powered-by": "Express",
+}
+`;
+
 exports[`Comments API when commenting enabled for all when authenticated Can browse all comments of a post 1: [body] 1`] = `
 Object {
   "comments": Array [
@@ -3025,6 +3113,74 @@ Object {
 }
 `;
 
+exports[`Comments API when commenting enabled for all when not authenticated Can browse all comments of a post (legacy) 1: [body] 1`] = `
+Object {
+  "comments": Array [
+    Object {
+      "count": Object {
+        "likes": Any<Number>,
+        "replies": Any<Number>,
+      },
+      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "edited_at": null,
+      "html": "<p>First.</p>",
+      "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
+      "liked": Any<Boolean>,
+      "member": Object {
+        "avatar_image": null,
+        "expertise": null,
+        "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
+        "name": "Mr Egg",
+        "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
+      },
+      "replies": Array [
+        Object {
+          "count": Object {
+            "likes": Any<Number>,
+          },
+          "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+          "edited_at": null,
+          "html": "<p>Really original</p>",
+          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
+          "liked": Any<Boolean>,
+          "member": Object {
+            "avatar_image": null,
+            "expertise": null,
+            "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
+            "name": null,
+            "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
+          },
+          "status": "published",
+        },
+      ],
+      "status": "published",
+    },
+  ],
+  "meta": Object {
+    "pagination": Object {
+      "limit": 15,
+      "next": null,
+      "page": 1,
+      "pages": 1,
+      "prev": null,
+      "total": 1,
+    },
+  },
+}
+`;
+
+exports[`Comments API when commenting enabled for all when not authenticated Can browse all comments of a post (legacy) 2: [headers] 1`] = `
+Object {
+  "access-control-allow-origin": "*",
+  "cache-control": "no-cache, private, no-store, must-revalidate, max-stale=0, post-check=0, pre-check=0",
+  "content-length": "753",
+  "content-type": "application/json; charset=utf-8",
+  "etag": StringMatching /\\(\\?:W\\\\/\\)\\?"\\(\\?:\\[ !#-\\\\x7E\\\\x80-\\\\xFF\\]\\*\\|\\\\r\\\\n\\[\\\\t \\]\\|\\\\\\\\\\.\\)\\*"/,
+  "vary": "Accept-Encoding",
+  "x-powered-by": "Express",
+}
+`;
+
 exports[`Comments API when commenting enabled for all when not authenticated Can browse all comments of a post 1: [body] 1`] = `
 Object {
   "comments": Array [
diff --git a/ghost/core/test/e2e-api/members-comments/comments.test.js b/ghost/core/test/e2e-api/members-comments/comments.test.js
index bc6e504067..475a4b0dcf 100644
--- a/ghost/core/test/e2e-api/members-comments/comments.test.js
+++ b/ghost/core/test/e2e-api/members-comments/comments.test.js
@@ -211,7 +211,7 @@ describe('Comments API', function () {
                 sinon.restore();
             });
 
-            it('Can browse all comments of a post', async function () {
+            it('Can browse all comments of a post (legacy)', async function () {
                 await membersAgent
                     .get(`/api/comments/?filter=post_id:'${postId}'`)
                     .expectStatus(200)
@@ -223,6 +223,18 @@ describe('Comments API', function () {
                     });
             });
 
+            it('Can browse all comments of a post', async function () {
+                await membersAgent
+                    .get(`/api/comments/post/${postId}/`)
+                    .expectStatus(200)
+                    .matchHeaderSnapshot({
+                        etag: anyEtag
+                    })
+                    .matchBodySnapshot({
+                        comments: [commentMatcherWithReplies({replies: 1})]
+                    });
+            });
+
             it('cannot comment on a post', async function () {
                 await testCannotCommentOnPost(401);
             });
@@ -306,7 +318,7 @@ describe('Comments API', function () {
                 await testCanCommentOnPost(member);
             });
 
-            it('Can browse all comments of a post', async function () {
+            it('Can browse all comments of a post (legacy)', async function () {
                 await membersAgent
                     .get(`/api/comments/?filter=post_id:'${postId}'`)
                     .expectStatus(200)
@@ -318,6 +330,18 @@ describe('Comments API', function () {
                     });
             });
 
+            it('Can browse all comments of a post', async function () {
+                await membersAgent
+                    .get(`/api/comments/post/${postId}/`)
+                    .expectStatus(200)
+                    .matchHeaderSnapshot({
+                        etag: anyEtag
+                    })
+                    .matchBodySnapshot({
+                        comments: [commentMatcherWithReplies({replies: 1}), commentMatcher]
+                    });
+            });
+
             it('Can reply to your own comment', async function () {
                 // Should not update last_seen_at or last_commented_at when both are already set to a value on the same day
                 const timezone = settingsCache.get('timezone');