diff --git a/packages/database/features/addContent.feature b/packages/database/features/addContent.feature
index 9148b6328..19c025349 100644
--- a/packages/database/features/addContent.feature
+++ b/packages/database/features/addContent.feature
@@ -19,8 +19,7 @@ Feature: Content access
           "source_local_id": "page1_uid",
           "created": "2000/01/01",
           "last_modified": "2001/01/02",
-          "author_local_id": "user1",
-          "content_type": "text/roam+markdown"
+          "author_local_id": "user1"
         }
       ]
       """
@@ -37,15 +36,13 @@ Feature: Content access
             "space_local_id": "s1",
             "created": "2000/01/01",
             "last_modified": "2001/01/02",
-            "author_local_id": "user2",
-            "content_type": "text/roam+markdown"
+            "author_local_id": "user2"
           },
           "source_local_id": "s1",
           "scale": "document",
           "created": "2000/01/01",
           "last_modified": "2001/01/02",
-          "text": "Some text",
-          "content_type": "text/plain"
+          "text": "Some text"
         },
         {
           "author_local_id": "user2",
@@ -56,8 +53,7 @@ Feature: Content access
           "created": "2000/01/02",
           "last_modified": "2001/01/03",
           "part_of_local_id": "s1",
-          "text": "Some subtext",
-          "content_type": "text/plain"
+          "text": "Some subtext"
         },
         {
           "space_local_id": "s1",
@@ -67,8 +63,7 @@ Feature: Content access
             "space_local_id": "s1",
             "created": "2000/01/01",
             "last_modified": "2001/01/02",
-            "author_local_id": "user2",
-            "content_type": "text/roam+markdown"
+            "author_local_id": "user2"
           },
           "source_local_id": "s3",
           "scale": "document",
@@ -76,7 +71,6 @@ Feature: Content access
           "last_modified": "2001/01/03",
           "part_of_local_id": "s2",
           "text": "Some subsubtext",
-          "content_type": "text/plain",
           "embedding_inline": {
             "model": "openai_text_embedding_3_small_1536",
             "vector": [
diff --git a/packages/database/supabase/migrations/20260713133517_accept_empty_content_type.sql b/packages/database/supabase/migrations/20260713133517_accept_empty_content_type.sql
new file mode 100644
index 000000000..96b5c86f0
--- /dev/null
+++ b/packages/database/supabase/migrations/20260713133517_accept_empty_content_type.sql
@@ -0,0 +1,144 @@
+CREATE OR REPLACE FUNCTION public.upsert_content(v_space_id bigint, data jsonb, v_creator_id BIGINT, content_as_document boolean DEFAULT TRUE)
+RETURNS SETOF BIGINT
+SET search_path = ''
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  v_platform public."Platform";
+  db_document public."Document"%ROWTYPE;
+  document_id BIGINT;
+  local_content public.content_local_input;
+  db_content public."Content"%ROWTYPE;
+  content_row JSONB;
+  upsert_id BIGINT;
+BEGIN
+  SELECT platform INTO STRICT v_platform FROM public."Space" WHERE id=v_space_id;
+  FOR content_row IN SELECT * FROM jsonb_array_elements(data)
+  LOOP
+    local_content := jsonb_populate_record(NULL::public.content_local_input, content_row);
+    local_content.space_id := v_space_id;
+    IF content_type(local_content) IS NULL THEN
+        local_content.content_type := CASE
+          WHEN variant(local_content)!='full' THEN 'text/plain'
+          WHEN v_platform='Roam' THEN 'text/roam+markdown'
+          WHEN v_platform='Obsidian' THEN 'text/obsidian+markdown'
+          ELSE 'text/plain' END;
+    END IF;
+    db_content := public._local_content_to_db_content(local_content);
+    IF account_local_id(author_inline(local_content)) IS NOT NULL THEN
+      SELECT public.create_account_in_space(
+        v_space_id,
+        account_local_id(author_inline(local_content)),
+        name(author_inline(local_content))
+      ) INTO STRICT upsert_id;
+      db_content.author_id := upsert_id;
+    END IF;
+    IF account_local_id(creator_inline(local_content)) IS NOT NULL THEN
+      SELECT public.create_account_in_space(
+        v_space_id,
+        account_local_id(creator_inline(local_content)),
+        name(creator_inline(local_content))
+      ) INTO STRICT upsert_id;
+      db_content.creator_id := upsert_id;
+    END IF;
+    IF content_as_document THEN
+      db_content.scale = 'document';
+    END IF;
+    IF content_as_document AND document_id(db_content) IS NULL AND source_local_id(document_inline(local_content)) IS NULL THEN
+      local_content.document_inline.space_id := v_space_id;
+      local_content.document_inline.source_local_id := db_content.source_local_id;
+      local_content.document_inline.last_modified := db_content.last_modified;
+      local_content.document_inline.created := db_content.created;
+      local_content.document_inline.author_id := db_content.author_id;
+    END IF;
+    IF source_local_id(document_inline(local_content)) IS NOT NULL THEN
+      IF content_type(document_inline(local_content)) IS NULL THEN
+        local_content.document_inline.content_type := CASE
+          WHEN v_platform='Roam' THEN 'text/roam+markdown'
+          WHEN v_platform='Obsidian' THEN 'text/obsidian+markdown'
+          ELSE 'text/plain' END;
+      END IF;
+      db_document := public._local_document_to_db_document(document_inline(local_content));
+      IF (db_document.author_id IS NULL AND author_inline(local_content) IS NOT NULL) THEN
+        db_document.author_id := upsert_account_in_space(v_space_id, author_inline(local_content));
+      END IF;
+      INSERT INTO public."Document" (
+        space_id,
+        source_local_id,
+        url,
+        created,
+        metadata,
+        last_modified,
+        author_id,
+        contents,
+        content_type
+      ) VALUES (
+        COALESCE(db_document.space_id, v_space_id),
+        db_document.source_local_id,
+        db_document.url,
+        db_document.created,
+        COALESCE(db_document.metadata, '{}'::jsonb),
+        db_document.last_modified,
+        db_document.author_id,
+        db_document.contents,
+        db_document.content_type
+      )
+      ON CONFLICT (space_id, source_local_id) DO UPDATE SET
+          url = COALESCE(db_document.url, EXCLUDED.url),
+          created = COALESCE(db_document.created, EXCLUDED.created),
+          metadata = COALESCE(db_document.metadata, EXCLUDED.metadata),
+          last_modified = COALESCE(db_document.last_modified, EXCLUDED.last_modified),
+          author_id = COALESCE(db_document.author_id, EXCLUDED.author_id),
+          contents = COALESCE(db_document.contents, EXCLUDED.contents),
+          content_type = COALESCE(db_document.content_type, EXCLUDED.content_type)
+      RETURNING id INTO STRICT document_id;
+      db_content.document_id := document_id;
+    END IF;
+    INSERT INTO public."Content" (
+        document_id,
+        source_local_id,
+        variant,
+        author_id,
+        creator_id,
+        created,
+        text,
+        metadata,
+        scale,
+        space_id,
+        last_modified,
+        part_of_id,
+        content_type
+    ) VALUES (
+        db_content.document_id,
+        db_content.source_local_id,
+        COALESCE(db_content.variant, 'direct'::public."ContentVariant"),
+        db_content.author_id,
+        db_content.creator_id,
+        db_content.created,
+        db_content.text,
+        COALESCE(db_content.metadata, '{}'::jsonb),
+        db_content.scale,
+        db_content.space_id,
+        db_content.last_modified,
+        db_content.part_of_id,
+        db_content.content_type
+    )
+    ON CONFLICT (space_id, source_local_id, variant) DO UPDATE SET
+        document_id = COALESCE(db_content.document_id, EXCLUDED.document_id),
+        author_id = COALESCE(db_content.author_id, EXCLUDED.author_id),
+        creator_id = COALESCE(db_content.creator_id, EXCLUDED.creator_id),
+        created = COALESCE(db_content.created, EXCLUDED.created),
+        text = COALESCE(db_content.text, EXCLUDED.text),
+        metadata = COALESCE(db_content.metadata, EXCLUDED.metadata),
+        scale = COALESCE(db_content.scale, EXCLUDED.scale),
+        last_modified = COALESCE(db_content.last_modified, EXCLUDED.last_modified),
+        part_of_id = COALESCE(db_content.part_of_id, EXCLUDED.part_of_id),
+        content_type = COALESCE(db_content.content_type, EXCLUDED.content_type)
+    RETURNING id INTO STRICT upsert_id;
+    IF model(embedding_inline(local_content)) IS NOT NULL THEN
+        PERFORM public.upsert_content_embedding(upsert_id, model(embedding_inline(local_content)),  vector(embedding_inline(local_content)));
+    END IF;
+    RETURN NEXT upsert_id;
+  END LOOP;
+END;
+$$;
diff --git a/packages/database/supabase/schemas/content.sql b/packages/database/supabase/schemas/content.sql
index 54f2a3bc9..b51b77544 100644
--- a/packages/database/supabase/schemas/content.sql
+++ b/packages/database/supabase/schemas/content.sql
@@ -545,6 +545,13 @@ BEGIN
   LOOP
     local_content := jsonb_populate_record(NULL::public.content_local_input, content_row);
     local_content.space_id := v_space_id;
+    IF content_type(local_content) IS NULL THEN
+        local_content.content_type := CASE
+          WHEN variant(local_content)!='full' THEN 'text/plain'
+          WHEN v_platform='Roam' THEN 'text/roam+markdown'
+          WHEN v_platform='Obsidian' THEN 'text/obsidian+markdown'
+          ELSE 'text/plain' END;
+    END IF;
     db_content := public._local_content_to_db_content(local_content);
     IF account_local_id(author_inline(local_content)) IS NOT NULL THEN
       SELECT public.create_account_in_space(