diff --git a/server/web3service/metadata/Web3Service.js b/server/web3service/metadata/Web3Service.js
new file mode 100644
index 0000000..9a66f5a
--- /dev/null
+++ b/server/web3service/metadata/Web3Service.js
@@ -0,0 +1,8 @@
+const utils = require('j7/utils');
+const basewrap = require('./basewrap');
+
+class Web3Service extends basewrap.BaseWrap {
+
+}
+
+module.exports = Web3Service;
diff --git a/server/web3service/metadata/factory.js b/server/web3service/metadata/factory.js
index e1d32ef..b52a726 100644
--- a/server/web3service/metadata/factory.js
+++ b/server/web3service/metadata/factory.js
@@ -4,6 +4,7 @@ const log = require('j7/log');
 
 const metaClassList = [];
 const metaClasses = {};
+const web3ConfHash = {};
 
 function registerMetaClass(fileName, primKey, wrapClass) {
   const metaClass = {
@@ -96,29 +97,22 @@ function init() {
                     'id',
                     'Item'
                    );
-  {
-    const jsonData = utils.readJsonFromFile(configDir + 'web3service.cluster.json');
-    jsonData.forEach((item) => {
-      if (item['instance_id'] == app.getInstanceId()) {
-        item['nets'].forEach((netId) => {
-          const netDir = configDir + 'nets/' + netId + '/';
-          registerMetaClass(netDir + 'web3.json',
-                            '',
-                            'Web3'
-                           );
-          registerMetaClass(netDir + 'contract.json',
-                            'name',
-                            'Contract'
-                           );
-        });
-      }
-    });
-  }
   load();
   {
     traverseMetaList('BlockChainDb', (dbConf, idx) => {
       app.registerDb('BlockChainDb' + idx, dbConf);
     });
+    traverseMetaList('Web3Service', (item, idx) => {
+      if (item['instance_id'] == app.getInstanceId()) {
+        item['nets'].forEach((netId) => {
+          const netDir = configDir + 'nets/' + netId + '/';
+          web3ConfHash[netId] = {
+            'Web3': utils.readJsonFromFile(netDir + 'web3.json'),
+            'Contract': utils.readJsonFromFile(netDir + 'contract.json')
+          };
+        });
+      }
+    });
   }
 }