diff --git a/const.js b/const.js
index 99d91ea..48ae886 100644
--- a/const.js
+++ b/const.js
@@ -1,6 +1,9 @@
 // categories need to be lowercase strings
 const PROTOCOL_CATEGORIES = ['money market', 'yield strategy', 'liquid locker', 'others'];
 
+const DESCRIPTION_MAXIMUM_CHARACTERS = 120;
+
 module.exports = {
   PROTOCOL_CATEGORIES,
+  DESCRIPTION_MAXIMUM_CHARACTERS,
 }
\ No newline at end of file
diff --git a/validate-config.js b/validate-config.js
index 2e3ea17..f95e7bf 100644
--- a/validate-config.js
+++ b/validate-config.js
@@ -1,7 +1,7 @@
 const fs = require('fs');
 const path = require('path');
 const yaml = require('js-yaml');
-const {PROTOCOL_CATEGORIES} = require("./const");
+const {PROTOCOL_CATEGORIES, DESCRIPTION_MAXIMUM_CHARACTERS} = require("./const");
 
 const LIMIT_ICON_KB_SIZE = 20;
 const BUFFER_LIMIT_ICON_KB_SIZE = LIMIT_ICON_KB_SIZE + 1;
@@ -22,6 +22,18 @@ function validateCategory(protocol, category) {
   }
 }
 
+function validateDescription(info) {
+  const {protocol, field, index, description} = info;
+
+  if (!mustBeNonEmptyString(description)) {
+    throw new Error(`protocol ${protocol}: metadata ${field} invalid 'description' field at index ${index}`);
+  }
+
+  if (description.length > DESCRIPTION_MAXIMUM_CHARACTERS) {
+    throw new Error(`protocol ${protocol}: metadata ${field} 'description' too long at index ${index}`);
+  }
+}
+
 async function main() {
   const CHANGED_PROTOCOLS = process.env.CHANGED_PROTOCOLS;
   const GET_ASSET_LIST_URL = process.env.GET_ASSET_LIST_URL;
@@ -157,9 +169,7 @@ function checkMetadataField(data, protocol, field, assetMap) {
       throw new Error(`protocol ${protocol}: metadata ${field} address not found in pendle ${field} list at index ${index}`);
     }
 
-    if (!mustBeNonEmptyString(description)) {
-      throw new Error(`protocol ${protocol}: metadata ${field} invalid 'description' field at index ${index}`);
-    }
+    validateDescription({protocol, field, index, description});
 
     if (!mustBeNonEmptyString(integrationUrl)) {
       throw new Error(`protocol ${protocol}: metadata ${field} invalid 'integrationUrl' field at index ${index}`);