diff --git a/index.js b/index.js
index 7f4e427..c861eb4 100644
--- a/index.js
+++ b/index.js
@@ -1,7 +1,9 @@
-
+var _conf = require('param.json');
 var _os = require('os');
+var _tools = require('graphdat-plugin-tools');
+
 var _source = _os.hostname();
-var _interval = parseInt(process.argv[1]) || 1000;
+var _interval =  _conf.pollInterval || 1000;
 
 var _last;
 
@@ -26,8 +28,8 @@ function poll()
 			var user = (e.times.user - l.times.user)  /
 					   (e.total - l.total);
 
-			console.log('CPU_CORE %d %s-C%d',
-				user, _source, idx + 1);
+			if (!isNaN(user))
+				console.log('CPU_CORE %d %s-C%d', user, _source, idx + 1);
 		}
 	}
 
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..3a36af3
--- /dev/null
+++ b/package.json
@@ -0,0 +1,25 @@
+{
+	"name": "plugin-cpu_core",
+	"version": "0.0.1",
+	"description": "CPU core plugin for Graphdat",
+	"main": "index.js",
+	"dependencies": {
+		"graphdat-plugin-tools" : "0.0.1"
+	},
+	"repository": {
+		"type": "git",
+		"url": "https://github.com/graphdat/plugin-cpu_core"
+	},
+	"keywords": [
+		"graphdat",
+		"plugin",
+		"cpu",
+		"core"
+	],
+	"author": "Graphdat <support@graphdat.com>",
+	"license": "Apache v2",
+	"bugs": {
+		"url": "https://github.com/graphdat/plugin-cpu_core/issues"
+	},
+	"engine": "node >= 0.8.1"
+}