diff --git a/smtpapi-nodejs/smtpapi-nodejs-test.ts b/smtpapi-nodejs/smtpapi-nodejs-test.ts
new file mode 100644
index 000000000..b9d332988
--- /dev/null
+++ b/smtpapi-nodejs/smtpapi-nodejs-test.ts
@@ -0,0 +1,39 @@
+/**
+ * Created from usage code samples from //github.com/sendgrid/smtpapi-nodejs#usage
+ */
+
+///<reference path="smtpapi-nodejs.d.ts" />
+
+import smtpapi = require("smtpapi");
+var header = new smtpapi();
+
+header.addTo('you@youremail.com');
+header.addTo('other@otheremail.com');
+header.setTos(['you@youremail.com', 'other@otheremail.com']);
+header.addSubstitution('keep', ['secret']);
+header.addSubstitution('other', ['one', 'two']);
+header.setSubstitutions({'keep': ['secret'], 'other': ['one', 'two']});
+header.addUniqueArg('cat', 'dogs');
+header.setUniqueArgs({cow: 'chicken'});
+header.setUniqueArgs({dad: 'proud'});
+header.addCategory('tactics');
+header.addCategory('advanced');
+header.setCategories(['tactics', 'advanced']);
+header.addSection('-charge-', 'This ship is useless.');
+header.setSections({'-charge-': 'This ship is useless.', '-other': 'Another section here'});
+header.addFilter('footer', 'enable', 1);
+header.addFilter('footer', 'text/html', '<strong>boo</strong>');
+header.setSendAt(1409348513);
+header.setSendEachAt([1409348513, 14093485134]);
+header.addSendEachAt([1409348513]);
+header.addSendEachAt(14093485134);
+header.setASMGroupID(123);
+header.setIpPool("testPool");
+header.setFilters({
+  'footer': {
+    'setting': {
+      'enable': 1,
+      'text/plain': 'You can haz footers!'
+    }
+  }
+});
diff --git a/smtpapi-nodejs/smtpapi-nodejs.d.ts b/smtpapi-nodejs/smtpapi-nodejs.d.ts
new file mode 100644
index 000000000..673532740
--- /dev/null
+++ b/smtpapi-nodejs/smtpapi-nodejs.d.ts
@@ -0,0 +1,64 @@
+// Type definitions for smtpapi-nodejs v1.2.0
+// Project: https://github.com/sendgrid/smtpapi-nodejs
+// Definitions by: Antonio Morales <https://github.com/a-morales>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare module SmtpApi {
+
+  interface Header {
+    to: string[];
+    sub: Object;
+    unique_args: Object;
+    category: string[];
+    section: Object;
+    filters: Object;
+    send_at: "" | number;
+    send_each_at: number[];
+    asm_group_id: number;
+    ip_pool: string;
+  }
+
+  interface Constructor {
+        new (): Instance;
+        new (header: Header): Instance;
+  }
+
+  interface Instance {
+      header: Header;
+      version: string;
+
+      jsonObject(): Header;
+      jsonString(): string;
+
+      addTo(to: string): void;
+      addTo(tos: string[]): void;
+      addSubstitution(key: string, val: string): void;
+      addSubstitution(key: string, val: string[]): void;
+      addUniqueArg(key: string, val: string): void;
+      addCategory(cat: string): void;
+      addCategory(cat: string[]): void;
+      addSection(sec: string, val: string): void;
+      addFilter(filter: string, setting:string , val: number): void;
+      addFilter(filter: string, setting:string , val: string): void;
+      addSendEachAt(send_each_at: number): void;
+      addSendEachAt(send_each_at: number[]): void;
+
+      setTos(email: string): void;
+      setTos(emails: string[]): void;
+      setSubstitutions(subs: Object): void;
+      setUniqueArgs(val: Object): void;
+      setCategories(cats: string): void;
+      setCategories(cats: string[]): void;
+      setSections(sec: Object): void;
+      setFilters(filters: Object): void;
+      setSendAt(send_at: number): void;
+      setSendEachAt(send_each_at: number[]): void;
+      setASMGroupID(asm_group_id: number): void;
+      setIpPool(ip_pool: string): void;
+  }
+}
+
+declare module 'smtpapi' {
+  var smtp: SmtpApi.Constructor;
+  export = smtp;
+}