diff --git a/src/main/resources/services/postMarkdown/postMarkdown.ts b/src/main/resources/services/postMarkdown/postMarkdown.ts
new file mode 100644
index 0000000000..2e70219f77
--- /dev/null
+++ b/src/main/resources/services/postMarkdown/postMarkdown.ts
@@ -0,0 +1,36 @@
+import { connect } from '/lib/xp/node'
+
+export const post = (req: XP.Request): XP.Response => {
+  const params = {
+    displayName: req.params.displayName,
+    markdown: req.params.markdown,
+  }
+
+  const conn = connect({
+    repoId: 'no.ssb.pubmd',
+    branch: 'master',
+    principals: ['role:system.admin'],
+  })
+
+  const nodeId = typeof req.params._id === 'string' ? req.params._id : ''
+  const nodeExists = nodeId ? conn.exists(nodeId) : false
+
+  let result
+  if (nodeExists) {
+    result = conn.modify({
+      key: nodeId,
+      editor: (node) => ({
+        ...node,
+        ...params,
+      }),
+    })
+  } else {
+    result = conn.create(params)
+  }
+
+  return {
+    status: 200,
+    body: result,
+    contentType: 'application/json',
+  }
+}
diff --git a/src/main/resources/services/postMarkdown/postMarkdown.xml b/src/main/resources/services/postMarkdown/postMarkdown.xml
new file mode 100644
index 0000000000..7f945f2c64
--- /dev/null
+++ b/src/main/resources/services/postMarkdown/postMarkdown.xml
@@ -0,0 +1,5 @@
+<service>
+    <allow>
+        <principal>role:system.everyone</principal>
+    </allow>
+</service>
\ No newline at end of file