diff --git a/core/matcher.js b/core/matcher.js
new file mode 100644
index 0000000..702436f
--- /dev/null
+++ b/core/matcher.js
@@ -0,0 +1,11 @@
+function doesUrlMatchBlackList(urlToMatch, dictionary){
+    if(urlToMatch.indexOf('http') == -1){
+        return false;
+    }
+    if(dictionary.urls[urlToMatch]){
+        return true;
+    }
+    
+}
+
+module.exports.doesUrlMatchBlackList = doesUrlMatchBlackList;
diff --git a/core/spec/MatcherSpec.js b/core/spec/MatcherSpec.js
new file mode 100644
index 0000000..d97af46
--- /dev/null
+++ b/core/spec/MatcherSpec.js
@@ -0,0 +1,26 @@
+describe("Matcher", function(){
+    matcher = require('../matcher.js');
+    var dictionary = {urls:
+        {"https://www.heroku.com/": {
+            "isDirect": false,
+            "parent": "https://salesforce.com/",
+            "source": "",
+            "description": "",
+            },
+        "https://www.salesforce.com/": {
+            "isDirect": true,
+            "parent": "",
+            "source": "",
+            "description": "",
+            }
+        }
+    };
+    it("should return false for any url that doesn't contain http: at the start", function(){
+        expect(matcher.doesUrlMatchBlackList('ftp://abc.com/9.jpg', {})).toBe(false);
+        expect(matcher.doesUrlMatchBlackList('www.abc.com/9.jpg', {})).toBe(false);
+    });
+    it("should return true for any url that does match the list", function(){
+        expect(matcher.doesUrlMatchBlackList('https://www.heroku.com/', dictionary)).toBe(true);
+        expect(matcher.doesUrlMatchBlackList('https://www.salesforce.com/', dictionary)).toBe(true);
+    });
+});
diff --git a/core/spec/support/jasmine.json b/core/spec/support/jasmine.json
new file mode 100644
index 0000000..a5f2932
--- /dev/null
+++ b/core/spec/support/jasmine.json
@@ -0,0 +1,9 @@
+{
+  "spec_dir": "spec",
+  "spec_files": [
+    "**/*[sS]pec.js"
+  ],
+  "helpers": [
+    "helpers/**/*.js"
+  ]
+}