diff --git a/app.py b/app.py
index 453b0b9..daba590 100644
--- a/app.py
+++ b/app.py
@@ -1214,6 +1214,137 @@ def delete_word_item(w_id: str):
     return jsonify({"error": "Delete failed"}), status
 
 
+@app.route("/api/setup-schema", methods=["POST"])
+def setup_directus_schema():
+    """
+    Einmalig ausführen: Konfiguriert alle M2M-Relationen in Directus.
+    Idempotent – bereits vorhandene Felder/Relationen werden übersprungen.
+    """
+    token = request.headers.get("Authorization", "")
+    results = []
+
+    def do(label, method, path, body=None):
+        data, status = _directus(method, path, token, body)
+        ok = status in (200, 201, 204)
+        results.append({"label": label, "status": status, "ok": ok,
+                         "err": None if ok else (data.get("errors") or data)})
+        return ok
+
+    # ── Fix M2O: questions.object → objects ──────────────────────────────────
+    do("relation questions.object→objects", "POST", "/relations", {
+        "collection": "questions", "field": "object",
+        "related_collection": "objects",
+        "schema": {"on_delete": "SET NULL"},
+        "meta": {"one_deselect_action": "nullify"},
+    })
+    # Update display template so the object label shows
+    do("update field questions.object template", "PATCH", "/fields/questions/object", {
+        "meta": {"options": {"template": "{{user_notes}}"}}
+    })
+
+    # ── Fix M2O: questions.short_answer → words ───────────────────────────────
+    do("relation questions.short_answer→words", "POST", "/relations", {
+        "collection": "questions", "field": "short_answer",
+        "related_collection": "words",
+        "schema": {"on_delete": "SET NULL"},
+        "meta": {"one_deselect_action": "nullify"},
+    })
+
+    # ── M2M: questions ↔ objects via questions_objects ────────────────────────
+    do("field questions.linked_objects", "POST", "/fields/questions", {
+        "field": "linked_objects", "type": "alias",
+        "meta": {"special": ["m2m"], "interface": "list-m2m",
+                 "options": {"template": "{{objects_id.user_notes}}"},
+                 "note": "Verknüpfte Objekte"},
+    })
+    do("field objects.linked_questions", "POST", "/fields/objects", {
+        "field": "linked_questions", "type": "alias",
+        "meta": {"special": ["m2m"], "interface": "list-m2m",
+                 "options": {"template": "{{questions_id.question_de}}"},
+                 "note": "Verknüpfte Fragen"},
+    })
+    do("relation questions_objects.questions_id→questions", "POST", "/relations", {
+        "collection": "questions_objects", "field": "questions_id",
+        "related_collection": "questions",
+        "schema": {"on_delete": "CASCADE"},
+        "meta": {"junction_field": "objects_id", "one_field": "linked_objects",
+                 "one_deselect_action": "nullify"},
+    })
+    do("relation questions_objects.objects_id→objects", "POST", "/relations", {
+        "collection": "questions_objects", "field": "objects_id",
+        "related_collection": "objects",
+        "schema": {"on_delete": "CASCADE"},
+        "meta": {"junction_field": "questions_id", "one_field": "linked_questions",
+                 "one_deselect_action": "nullify"},
+    })
+
+    # ── M2M: words ↔ objects via words_objects ────────────────────────────────
+    do("field words.linked_objects", "POST", "/fields/words", {
+        "field": "linked_objects", "type": "alias",
+        "meta": {"special": ["m2m"], "interface": "list-m2m",
+                 "options": {"template": "{{objects_id.user_notes}}"},
+                 "note": "Verknüpfte Objekte"},
+    })
+    do("field objects.linked_words", "POST", "/fields/objects", {
+        "field": "linked_words", "type": "alias",
+        "meta": {"special": ["m2m"], "interface": "list-m2m",
+                 "options": {"template": "{{words_id.title_de}}"},
+                 "note": "Verknüpfte Wörter"},
+    })
+    do("relation words_objects.words_id→words", "POST", "/relations", {
+        "collection": "words_objects", "field": "words_id",
+        "related_collection": "words",
+        "schema": {"on_delete": "CASCADE"},
+        "meta": {"junction_field": "objects_id", "one_field": "linked_objects",
+                 "one_deselect_action": "nullify"},
+    })
+    do("relation words_objects.objects_id→objects", "POST", "/relations", {
+        "collection": "words_objects", "field": "objects_id",
+        "related_collection": "objects",
+        "schema": {"on_delete": "CASCADE"},
+        "meta": {"junction_field": "words_id", "one_field": "linked_words",
+                 "one_deselect_action": "nullify"},
+    })
+
+    # ── M2M: questions ↔ words (distractor) via questions_distractor_words ────
+    do("field questions.distractor_words", "POST", "/fields/questions", {
+        "field": "distractor_words", "type": "alias",
+        "meta": {"special": ["m2m"], "interface": "list-m2m",
+                 "options": {"template": "{{words_id.title_de}}"},
+                 "note": "Ablenker-Wörter (nicht in Frage/Antwort)"},
+    })
+    do("relation questions_distractor_words.questions_id→questions", "POST", "/relations", {
+        "collection": "questions_distractor_words", "field": "questions_id",
+        "related_collection": "questions",
+        "schema": {"on_delete": "CASCADE"},
+        "meta": {"junction_field": "words_id", "one_field": "distractor_words",
+                 "one_deselect_action": "nullify"},
+    })
+    do("relation questions_distractor_words.words_id→words", "POST", "/relations", {
+        "collection": "questions_distractor_words", "field": "words_id",
+        "related_collection": "words",
+        "schema": {"on_delete": "CASCADE"},
+        "meta": {"junction_field": "questions_id", "one_deselect_action": "nullify"},
+    })
+
+    # ── Backref: words → questions via existing questions_words junction ───────
+    do("field words.linked_questions", "POST", "/fields/words", {
+        "field": "linked_questions", "type": "alias",
+        "meta": {"special": ["m2m"], "interface": "list-m2m",
+                 "options": {"template": "{{questions_id.question_de}}"},
+                 "note": "Fragen in denen dieses Wort vorkommt"},
+    })
+    # Patch the existing questions_words relation to add the one_field backref on words
+    do("patch relation questions_words.words_id one_field", "PATCH",
+       "/relations/questions_words/words_id", {
+           "meta": {"one_field": "linked_questions", "one_deselect_action": "nullify"}
+       })
+
+    failed = [r for r in results if not r["ok"]]
+    return jsonify({"ok": len(failed) == 0, "total": len(results),
+                    "failed": len(failed), "results": results})
+
+
 if __name__ == "__main__":
     app.run(host="0.0.0.0", port=8000, debug=True)