diff --git a/src/Managing.Api/appsettings.Sandbox.json b/src/Managing.Api/appsettings.Sandbox.json
index 9cfb836..891728f 100644
--- a/src/Managing.Api/appsettings.Sandbox.json
+++ b/src/Managing.Api/appsettings.Sandbox.json
@@ -12,6 +12,11 @@
     "AppId": "cm6f47n1l003jx7mjwaembhup",
     "AppSecret": "63Chz2z5M8TgR5qc8dznSLRAGTHTyPU4cjdQobrBF1Cx5tszZpTuFgyrRd7hZ2k6HpwDz3GEwQZzsCqHb8Z311bF"
   },
+  "Kaigen": {
+    "BaseUrl": "https://kaigen-back-development.up.railway.app/",
+    "DebitEndpoint": "/api/credits/debit",
+    "RefundEndpoint": "/api/credits/refund"
+  },
   "Web3Proxy": {
     "BaseUrl": "http://srv-captain--web3-proxy:4111"
   },