diff --git a/twilio/twilio-tests.ts b/twilio/twilio-tests.ts
new file mode 100644
index 0000000000..9af07e7c27
--- /dev/null
+++ b/twilio/twilio-tests.ts
@@ -0,0 +1,17 @@
+/// <reference path="./twilio.d.ts" />
+
+var str: string;
+
+const client = new twilio.RestClient(str, str);
+const account = client.accounts(str);
+
+account.messages.post({
+  body: str,
+  from: str,
+  to: str
+});
+
+account.sms.messages(str).get(function(err, data) {
+  // Do nothing
+});
+
diff --git a/twilio/twilio.d.ts b/twilio/twilio.d.ts
new file mode 100644
index 0000000000..69331e86ca
--- /dev/null
+++ b/twilio/twilio.d.ts
@@ -0,0 +1,213 @@
+/// <reference path="../node/node.d.ts" />
+/// <reference path="../Q/Q.d.ts" />
+
+
+/// index.js
+export class twilio extends RestClient {
+  constructor(sid?: string, tkn?: string, options?: ClientOptions);
+}
+
+export namespace twilio {
+
+  // Composite Classes:
+  //==============================
+  // RestClient
+  // PricingClient
+  // MonitorClient
+  // TaskRouterClient
+  // IpMessagingClient
+  // LookupsClient
+  // TrunkingClient
+
+  // Classes:
+  //==============================
+  // AccessToken
+  // Capability
+  // TaskRouterCapability
+  // TaskRouterWorkerCapability
+  // TaskRouterWorkspaceCapability
+  // TaskRouterTaskQueueCapability
+  // TwimlResponse
+  // webhook
+
+  // Methods:
+  //===============================
+  // validateRequest
+  // validateExpressRequest
+}
+
+
+/// ???
+declare interface GrantPayload {}
+
+declare interface Grant {
+  toPayload(): GrantPayload;
+}
+
+declare interface RequestCallback { (err: any, data: any, response: ): void }
+
+/// AccessToken.js
+declare interface IpMessagingGrantOptions {
+  serviceSid: string;
+  endpointId: string;
+  deploymentRoleSid: string;
+  pushCredentialSid: string;
+}
+
+declare interface IpMessagingGrantPayload extends GrantPayload {
+  service_sid: string;
+  endpoint_id: string;
+  deployment_role_sid: string;
+  push_credential_sid: string;
+}
+
+declare class IpMessagingGrant implements Grant {
+  serviceSid: string;
+  endpointId: string;
+  deploymentRoleSid: string;
+  pushCredentialSid: string;
+  key: string;
+
+  constructor(options?: IpMessagingGrantOptions);
+
+  toPayload(): IpMessagingGrantPayload;
+}
+
+declare interface ConversationsGrantOptions {
+  configurationProfileSid: string;
+}
+
+declare interface ConversationsGrantPayload extends GrantPayload {
+  configuration_profile_sid: string;
+}
+
+declare class ConversationsGrant implements Grant {
+  configurationProfileSid: string;
+
+  constructor(options?: ConversationsGrantOptions);
+
+  toPayload(): ConversationsGrantPayload;
+}
+
+declare interface AccessTokenOptions {
+  ttl: number;
+  identity: string;
+  nbf: number;
+}
+
+declare class AccessToken {
+  accountSid: string;
+  keySid: string;
+  secret: string;
+  ttl: number;
+  identity: string;
+  nbf: number;
+  grants: Array<Grant>;
+
+  static IpMessagingGrant: IpMessagingGrant;
+  static ConversationGrant: ConversationsGrant;
+  static DEFAULT_ALGORITHM: string;
+  static ALGORITHMS: Array<string>;
+
+  constructor(accountSid: string, keySid: string, secret: string, opts?: AccessTokenOptions);
+
+  addGrant(grant: Grant): void;
+  toJwt(algorithm: string): any;  // TODO Find correct typedef
+}
+
+/// Capability.js
+declare class Capability {
+  accountSid: string;
+  authToken: string;
+  capabilities: Array<string>;
+  clientName: string;
+  outgoingScopeParams: any;
+  scopeParams: any;
+  
+  constructor(sid?: string, tkn?: string);
+
+  allowClientIncoming(clientName: string): Capability;
+  allowClientOutgoing(appSid: string, params?: any): Capability;
+  allowEventStream(filters?: any): Capability;
+  generate(timeout?: number): string;
+}
+
+/// Client.js
+declare interface ClientOptions {
+  host?: string;
+  apiVersion?: string;
+  timeout?: number;
+}
+
+declare interface ClientRequestOptions {
+  url: string;
+  form?: any;
+}
+
+declare class Client {
+  accountSid: string;
+  authToken: string;
+  host: string;
+  apiVersion: string;
+  timeout: number;
+
+  constructor(sid?: string, tkn?: string, host?: string, api_version?: string, timeout?: number);
+
+  getBaseUrl(): string;
+  request(options: ClientRequestOptions, callback: RequestCallback): Q.Promise<any>;
+}
+
+/// IpMessagingClient.js
+declare class IpMessagingClient extends Client {
+  services: ServiceResource;
+  credentials: CredentialsResource;
+
+  constructor(sid?: string, tkn?: string, options?: ClientOptions);
+}
+
+/// LookupsClient.js
+declare class LookupsClient extends Client {
+  phoneNumbers: PhoneNumbersResource;
+
+  constructor(sid?: string, tkn?: string, options?: ClientOptions);
+}
+
+/// MonitorClient.js
+declare class MonitorClient extends Client implements EventResource, AlertResource {
+  events: EventResource;
+  alerts: AlertResource;
+
+  constructor(sid?: string, tkn?: string, options?: ClientOptions);
+}
+
+/// PricingClient.js
+declare class PricingClient extends Client {
+  voice: VoiceResource;
+  phoneNumbers: PhoneNumbersResource;
+  messaging: MessagingResource;
+
+  constructor(sid?: string, tkn?: string, options?: ClientOptions);
+}
+
+/// RestClient.js
+declare class RestClient extends Client implements AccountResource {
+  accounts: AccountResource;
+
+  // Messaging shorthand
+  // TODO Pull in proper method signatures here!
+  sendSms();
+  sendMms();
+  sendMessage();
+  listSms();
+  listMessages();
+  getSms(messageSid: string, callback: (/* ??? */) => void): void;
+  getMessage(messageSid: string, callback: (/* ??? */) => void): void;
+
+  // Calls shorthand
+  // TODO Pull in proper method signatures here!
+  makeCall();
+  listCalls();
+  getCall(callSid: string, callback: (/* ??? */) => void): void;
+
+  request(options: ClientRequestOptions, callback: RequestCallback): Q.Promise<any>;
+}
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