diff --git a/changelogs/internal/newsfragments/1876.clarification b/changelogs/internal/newsfragments/1876.clarification
new file mode 100644
index 00000000..9f840914
--- /dev/null
+++ b/changelogs/internal/newsfragments/1876.clarification
@@ -0,0 +1 @@
+Render added/changed in info on request and response content types.
diff --git a/data/api/client-server/content-repo.yaml b/data/api/client-server/content-repo.yaml
index d0a6e5bb..92ca6caa 100644
--- a/data/api/client-server/content-repo.yaml
+++ b/data/api/client-server/content-repo.yaml
@@ -715,8 +715,9 @@ components:
     bytes:
       content:
         application/octet-stream:
-          example: <bytes>
-      description: The content to be uploaded.
+          schema:
+            description: The content to be uploaded.
+            example: <bytes>
       required: true
   responses:
     uploadTooLarge:
diff --git a/layouts/partials/openapi/render-content-type.html b/layouts/partials/openapi/render-content-type.html
index 96033e16..a7c90e1a 100644
--- a/layouts/partials/openapi/render-content-type.html
+++ b/layouts/partials/openapi/render-content-type.html
@@ -1,16 +1,12 @@
 {{/*
 
-  Render a table showing content types and their descriptions, given
-  two arrays with equal length:
+  Render a table showing content types and their descriptions, given:
 
-  * `content_types`: the content type strings
-
-  * `descriptions`: the description strings
+  * `content_types`: OpenAPI data specifying the content types as a dictionary of the form {string: {"schema": JsonSchema}}
 
 */}}
 
 {{ $content_types := .content_types }}
-{{ $descriptions := .descriptions}}
 
 {{ if (gt (len $content_types) 0) }}
 
@@ -21,10 +17,14 @@
     <th class="col-description">Description</th>
   </tr>
  </thead>
- {{ range $idx, $content_type := $content_types }}
+ {{ range $mime, $body := $content_types }}
  <tr>
-  <td><code>{{ $content_type }}</code></td>
-  <td>{{ index $descriptions $idx | markdownify -}}</td>
+  <td><code>{{ $mime }}</code></td>
+  <td>
+   {{ $body.schema.description | markdownify -}}
+   {{ if (index $body.schema "x-addedInMatrixVersion") }}{{ partial "added-in" (dict "v" (index $body.schema "x-addedInMatrixVersion")) }}{{ end -}}
+   {{ if (index $body.schema "x-changedInMatrixVersion") }}{{ partial "changed-in" (dict "changes_dict" (index $body.schema "x-changedInMatrixVersion")) }}{{ end -}}
+  </td>
  </tr>
  {{ end }}
 </table>
diff --git a/layouts/partials/openapi/render-request.html b/layouts/partials/openapi/render-request.html
index 5fa0c255..92811f12 100644
--- a/layouts/partials/openapi/render-request.html
+++ b/layouts/partials/openapi/render-request.html
@@ -50,13 +50,7 @@
             {{/*
                 Show the content types and description.
             */}}
-            {{ $mimes := slice }}
-            {{ $descriptions := slice }}
-            {{ range $mime, $body := $request_body.content }}
-                {{ $mimes = $mimes | append $mime }}
-                {{ $descriptions = $descriptions | append $request_body.description }}
-            {{ end }}
-            {{ partial "openapi/render-content-type" (dict "content_types" $mimes "descriptions" $descriptions) }}
+            {{ partial "openapi/render-content-type" (dict "content_types" $request_body.content) }}
         {{ end }}
 
 <h3>Request body example</h3>
diff --git a/layouts/partials/openapi/render-responses.html b/layouts/partials/openapi/render-responses.html
index 80dcb582..f26110b4 100644
--- a/layouts/partials/openapi/render-responses.html
+++ b/layouts/partials/openapi/render-responses.html
@@ -123,13 +123,7 @@
             {{/*
                 Show the content types and description.
             */}}
-            {{ $mimes := slice }}
-            {{ $descriptions := slice }}
-            {{ range $mime, $body := $response.content }}
-                {{ $mimes = $mimes | append $mime }}
-                {{ $descriptions = $descriptions | append $body.schema.description }}
-            {{ end }}
-            {{ partial "openapi/render-content-type" (dict "content_types" $mimes "descriptions" $descriptions) }}
+            {{ partial "openapi/render-content-type" (dict "content_types" $response.content) }}
         {{ end }}
     {{ end }}
 {{ end }}