diff --git a/coretool.js b/coretool.js
index 88138d6..d792568 100644
--- a/coretool.js
+++ b/coretool.js
@@ -126,6 +126,19 @@ module.exports = {
     return parseInt(port)
   },
 
+  keyname_to_apiport (keyname) {
+    return this.BASEPORT_API_SERVER + parseInt(this.alpha_to_digit(keyname))
+  },
+  keyname_to_chainport (keyname) {
+    return this.BASEPORT_CHAIN_SERVER + parseInt(this.alpha_to_digit(keyname))
+  },
+  keyname_to_netport (keyname) {
+    return this.BASEPORT_NET_NODE + parseInt(this.alpha_to_digit(keyname))
+  },
+  keyname_to_webport (keyname) {
+    return this.BASEPORT_WEB_SERVER + parseInt(this.alpha_to_digit(keyname))
+  },
+
   randomize_number ({ length, min, max } = {}) {
     // 长度为 length 的随机数字，或者 (min||0) <= num < max
     var num = 0