diff --git a/app/app.py b/app/app.py
new file mode 100644
index 0000000..055155c
--- /dev/null
+++ b/app/app.py
@@ -0,0 +1,75 @@
+from flask import Flask, request, jsonify
+from flask_cors import CORS
+from db import Base, engine
+from models import User
+from services.intent_service import IntentService
+from services.mode_service import ModeService
+from services.preference_service import PreferenceService
+from services.suggestion_service import SuggestionService
+from services.document_service import DocumentService
+from services.search_service import SearchService
+from services.monitoring_service import MonitoringService
+from services.export_service import ExportService
+from services.audit_service import AuditService
+from services.security_service import SecurityService
+
+app = Flask(__name__)
+CORS(app)
+
+Base.metadata.create_all(bind=engine)
+
+intent_service = IntentService()
+mode_service = ModeService()
+preference_service = PreferenceService()
+suggestion_service = SuggestionService()
+document_service = DocumentService()
+search_service = SearchService()
+monitoring_service = MonitoringService()
+export_service = ExportService()
+audit_service = AuditService()
+security_service = SecurityService()
+
+USER_ID = 1
+
+@app.route("/api/conversation", methods=["POST"])
+def conversation():
+    data = request.json
+    message = data.get("message", "")
+
+    mode = mode_service.get_current_mode(USER_ID)
+    if not mode:
+        reply = (
+            "{user.name}, como você quer trabalhar hoje?\n\n"
+            "- Modo Advogado\n- Modo Corporativo\n- Apenas Conversar\n\n"
+            "Me diga qual modo você prefere agora."
+        )
+        return jsonify({"reply": reply, "suggestions": [], "quick_actions": []})
+
+    intent = intent_service.detect_intent(message)
+    prefs = preference_service.get_preferences(USER_ID)
+
+    if intent == "set_mode":
+        mode_service.set_mode(USER_ID, intent_service.extract_mode(message))
+        reply = f"Perfeito, vou atuar no modo {mode_service.get_current_mode(USER_ID)}. O que vamos fazer agora?"
+        return jsonify({"reply": reply, "suggestions": [], "quick_actions": []})
+
+    if intent == "document":
+        response = document_service.handle(message, mode, prefs)
+    elif intent == "search":
+        response = search_service.handle(message, mode, prefs)
+    elif intent == "monitoring":
+        response = monitoring_service.handle(message, mode, prefs)
+    else:
+        response = document_service.chat_like(message, mode, prefs)
+
+    suggestions = suggestion_service.generate_suggestions(response, intent, mode, prefs)
+    quick_actions = suggestion_service.generate_quick_actions(response, intent, mode, prefs)
+
+    return jsonify({
+        "reply": response["text"],
+        "suggestions": suggestions,
+        "quick_actions": quick_actions
+    })
+
+if __name__ == "__main__":
+    app.run(debug=True)