diff --git a/app/routes/api_bp.py b/app/routes/api_bp.py
index 81269c3..340d094 100644
--- a/app/routes/api_bp.py
+++ b/app/routes/api_bp.py
@@ -1,9 +1,10 @@
-"""API blueprint — groups, documents, supplements, sync, cleanup, spec-current."""
+"""API blueprint — groups, documents, supplements, sync, cleanup, spec-current, chat."""
 from flask import Blueprint, request, jsonify
 from app.db import documents, supplements, spec_current
 from app.db.connection import execute, query
 from app.services.grouping import group_documents, apply_groups
-from app.config import API_KEY
+from app.config import API_KEY, LLM_URL, LLM_KEY, LLM_MODEL
+import httpx
 
 api_bp = Blueprint("api", __name__)
 
@@ -133,6 +134,53 @@ def api_spec_current():
     return jsonify(ok=True, rows=rows)
 
 
+# ── Chat (совместимость с Lucee /chat.cfm) ──────────────────────
+
+@api_bp.route("/chat", methods=["POST"])
+@api_bp.route("/chat.cfm", methods=["POST"])
+def chat():
+    """Чат с LLM по данным спецификации. Совместим с Lucee-форматом ответа."""
+    contract_id = request.args.get("contract_id", "")
+    question = request.form.get("question", "")
+    if not contract_id or not question:
+        return jsonify(OK=False, ERROR="contract_id and question required")
+
+    rows = spec_current.list_by_contract(contract_id)
+    if not rows:
+        return jsonify(OK=True, ANSWER="Нет данных. Сначала запустите сравнение.")
+
+    ctx = "\n".join(
+        f"{r.get('name','')} | цена={r.get('price')} | объём={r.get('qty')} | "
+        f"сумма={r.get('sum')} | начало={r.get('date_start')}"
+        for r in rows
+    )
+    prompt = (
+        f"Ты — анализатор договоров. Данные:\n{ctx}\n\n"
+        f"Вопрос: {question}\nОтветь кратко, только по данным."
+    )
+
+    try:
+        with httpx.Client(http2=True, timeout=120) as client:
+            resp = client.post(
+                LLM_URL,
+                json={
+                    "model": LLM_MODEL,
+                    "messages": [{"role": "user", "content": prompt}],
+                    "max_tokens": 1000,
+                    "temperature": 0.1,
+                },
+                headers={
+                    "Authorization": f"Bearer {LLM_KEY}",
+                    "Content-Type": "application/json",
+                },
+            )
+            resp.raise_for_status()
+            answer = resp.json()["choices"][0]["message"]["content"]
+            return jsonify(OK=True, ANSWER=answer)
+    except Exception as e:
+        return jsonify(OK=False, ERROR=f"LLM error: {e}")
+
+
 # ── Cleanup (требует API-ключ) ────────────────────────────────────
 
 @api_bp.route("/api/cleanup", methods=["POST"])