diff --git a/coretool.js b/coretool.js
index bbfeb31..007d7a4 100644
--- a/coretool.js
+++ b/coretool.js
@@ -2,6 +2,11 @@
  */
 
 module.exports = {
+  BASEPORT_API_SERVER: 7000,
+  BASEPORT_WEB_SERVER: 8000,
+  BASEPORT_CHAIN_SERVER: 6000,
+  BASEPORT_NET_NODE: 60000,
+
   sleep: (ms) => new Promise((resolve, reject) => setTimeout(resolve, ms)),
 
   parse_json_anyway (value) {