diff --git a/lib/api.js b/lib/api.js
index dec01c4..3eca42b 100644
--- a/lib/api.js
+++ b/lib/api.js
@@ -12,7 +12,7 @@ const internalHeaderKey = 'x-user-session-token'
 const version = 'v1'
 
 // getOptions is a factory for axios default options
-function getOptions (useCustomSessionToken) {
+function getOptions (useCustomSessionToken='') {
   let defaultOptions = { jar: cookieJar, withCredentials: true, headers: {} }
   if (useCustomSessionToken && useCustomSessionToken.length > 0) {
     defaultOptions.headers[internalHeaderKey] = useCustomSessionToken
@@ -33,7 +33,7 @@ function initCheck (loaded) {
 // extractSessionTokenFromHeader will extract a session token from a cookie header value
 //
 // Example `cookieHeader` Value: 'Cookie: session_token=this-is-the-session-token-value-getting-extracted; another_cookie=value; third_cookie=value'
-function extractSessionTokenFromHeader (cookieHeader) {
+function extractSessionTokenFromHeader (cookieHeader='') {
   if (!cookieHeader || cookieHeader.length < 10) {
     return cookieHeader
   }
@@ -246,14 +246,14 @@ async function createSession (t) {
 // prolongSession will attempt to prolong a session (either the user or api)
 //
 // For more information: https://docs.tonicpow.com/#632ed94a-3afd-4323-af91-bdf307a399d2
-async function prolongSession (t, userSessionToken) {
+async function prolongSession (t, userSessionToken='') {
   return axios.get(t.config.apiUrl + version + '/auth/session', getOptions(userSessionToken))
 }
 
 // endSession will end the given session token or the api token if none is given
 //
 // For more information: https://docs.tonicpow.com/#1dfeff1e-6c8d-4b32-904e-a19261b1f89e
-async function endSession (t, userSessionToken) {
+async function endSession (t, userSessionToken='') {
   return axios.delete(t.config.apiUrl + version + '/auth/session', getOptions(userSessionToken))
 }
 
@@ -267,7 +267,7 @@ async function loginUser (t, email, password) {
 // logoutUser will end the user session, if no session token set it will use the session.userToken
 //
 // For more information: https://docs.tonicpow.com/#39d65294-376a-4366-8f71-a02b08f9abdf
-async function logoutUser (t, userSessionToken) {
+async function logoutUser (t, userSessionToken='') {
   // Missing token or empty token
   if (!userSessionToken || userSessionToken.length < 1) {
     throw Error('user session must be set')
@@ -279,7 +279,7 @@ async function logoutUser (t, userSessionToken) {
 // currentUser will attempt get the profile for the current user or userSessionToken
 //
 // For more information: https://docs.tonicpow.com/#7f6e9b5d-8c7f-4afc-8e07-7aafdd891521
-async function currentUser (t, userSessionToken) {
+async function currentUser (t, userSessionToken='') {
   // Missing token or empty token
   if (!userSessionToken || userSessionToken.length < 1) {
     throw Error('user session must be set')
@@ -325,7 +325,7 @@ async function createUser (t, user) {
 // updateUser will update an existing user
 //
 // For more information: https://docs.tonicpow.com/#7c3c3c3a-f636-469f-a884-449cf6fb35fe
-async function updateUser (t, user, userSessionToken) {
+async function updateUser (t, user, userSessionToken='') {
   return axios.put(t.config.apiUrl + version + '/users', user, getOptions(userSessionToken))
 }
 
@@ -366,7 +366,7 @@ async function completePhoneVerification (t, phone, phoneCode) {
 // Use the userSessionToken if making request on behalf of another user
 //
 // For more information: https://docs.tonicpow.com/#153c0b65-2d4c-4972-9aab-f791db05b37b
-async function createAdvertiserProfile (t, profile, userSessionToken) {
+async function createAdvertiserProfile (t, profile, userSessionToken='') {
   return axios.post(t.config.apiUrl + version + '/advertisers', profile, getOptions(userSessionToken))
 }
 
@@ -375,7 +375,7 @@ async function createAdvertiserProfile (t, profile, userSessionToken) {
 // Use the userSessionToken if making request on behalf of another user
 //
 // For more information: https://docs.tonicpow.com/#b3a62d35-7778-4314-9321-01f5266c3b51
-async function getAdvertiserProfile (t, profileId, userSessionToken) {
+async function getAdvertiserProfile (t, profileId, userSessionToken='') {
   return axios.get(t.config.apiUrl + version + '/advertisers/details/' + profileId, getOptions(userSessionToken))
 }
 
@@ -383,7 +383,7 @@ async function getAdvertiserProfile (t, profileId, userSessionToken) {
 // Use the userSessionToken if making request on behalf of another user
 //
 // For more information: https://docs.tonicpow.com/#0cebd1ff-b1ce-4111-aff6-9d586f632a84
-async function updateAdvertiserProfile (t, profile, userSessionToken) {
+async function updateAdvertiserProfile (t, profile, userSessionToken='') {
   return axios.put(t.config.apiUrl + version + '/advertisers', profile, getOptions(userSessionToken))
 }
 
@@ -396,7 +396,7 @@ async function updateAdvertiserProfile (t, profile, userSessionToken) {
 // Use the userSessionToken if making request on behalf of another user
 //
 // For more information: https://docs.tonicpow.com/#b67e92bf-a481-44f6-a31d-26e6e0c521b1
-async function createCampaign (t, campaign, userSessionToken) {
+async function createCampaign (t, campaign, userSessionToken='') {
   return axios.post(t.config.apiUrl + version + '/campaigns', campaign, getOptions(userSessionToken))
 }
 
@@ -405,7 +405,7 @@ async function createCampaign (t, campaign, userSessionToken) {
 // Use the userSessionToken if making request on behalf of another user
 //
 // For more information: https://docs.tonicpow.com/#b827446b-be34-4678-b347-33c4f63dbf9e
-async function getCampaign (t, campaignId, userSessionToken) {
+async function getCampaign (t, campaignId, userSessionToken='') {
   return axios.get(t.config.apiUrl + version + '/campaigns/details/' + campaignId, getOptions(userSessionToken))
 }
 
@@ -420,14 +420,14 @@ async function getCampaignBalance (t, campaignId) {
 // Use the userSessionToken if making request on behalf of another user
 //
 // For more information: https://docs.tonicpow.com/#665eefd6-da42-4ca9-853c-fd8ca1bf66b2
-async function updateCampaign (t, campaign, userSessionToken) {
+async function updateCampaign (t, campaign, userSessionToken='') {
   return axios.put(t.config.apiUrl + version + '/campaigns', campaign, getOptions(userSessionToken))
 }
 
 // listCampaigns will return a list of active campaigns
 //
 // For more information: https://docs.tonicpow.com/#c1b17be6-cb10-48b3-a519-4686961ff41c
-async function listCampaigns (t, customSessionToken) {
+async function listCampaigns (t, customSessionToken='') {
   return axios.get(t.config.apiUrl + version + '/campaigns/list', getOptions(customSessionToken))
 }
 
@@ -440,7 +440,7 @@ async function listCampaigns (t, customSessionToken) {
 // Use the userSessionToken if making request on behalf of another user
 //
 // For more information: https://docs.tonicpow.com/#29a93e9b-9726-474c-b25e-92586200a803
-async function createGoal (t, goal, userSessionToken) {
+async function createGoal (t, goal, userSessionToken='') {
   return axios.post(t.config.apiUrl + version + '/goals', goal, getOptions(userSessionToken))
 }
 
@@ -449,7 +449,7 @@ async function createGoal (t, goal, userSessionToken) {
 // Use the userSessionToken if making request on behalf of another user
 //
 // For more information: https://docs.tonicpow.com/#48d7bbc8-5d7b-4078-87b7-25f545c3deaf
-async function getGoal (t, goalId, userSessionToken) {
+async function getGoal (t, goalId, userSessionToken='') {
   return axios.get(t.config.apiUrl + version + '/goals/details/' + goalId, getOptions(userSessionToken))
 }
 
@@ -457,14 +457,14 @@ async function getGoal (t, goalId, userSessionToken) {
 // Use the userSessionToken if making request on behalf of another user
 //
 // For more information: https://docs.tonicpow.com/#395f5b7d-6a5d-49c8-b1ae-abf7f90b42a2
-async function updateGoal (t, goal, userSessionToken) {
+async function updateGoal (t, goal, userSessionToken='') {
   return axios.put(t.config.apiUrl + version + '/goals', goal, getOptions(userSessionToken))
 }
 
 // convertGoal will fire a conversion for a given goal, if successful it will make a new Conversion
 //
 // For more information: https://docs.tonicpow.com/#caeffdd5-eaad-4fc8-ac01-8288b50e8e27
-async function convertGoal (t, goalName, visitorSessionId, additionalData, customUserId) {
+async function convertGoal (t, goalName, visitorSessionId, additionalData='', customUserId='') {
   let data = { name: goalName, visitor_session_id: visitorSessionId, additional_data: additionalData, user_id: customUserId }
   return axios.post(t.config.apiUrl + version + '/goals/convert', data, getOptions())
 }
@@ -478,7 +478,7 @@ async function convertGoal (t, goalName, visitorSessionId, additionalData, custo
 // Use the userSessionToken if making request on behalf of another user
 //
 // For more information: https://docs.tonicpow.com/#154bf9e1-6047-452f-a289-d21f507b0f1d
-async function createLink (t, link, userSessionToken) {
+async function createLink (t, link, userSessionToken='') {
   return axios.post(t.config.apiUrl + version + '/links', link, getOptions(userSessionToken))
 }
 
@@ -487,7 +487,7 @@ async function createLink (t, link, userSessionToken) {
 // Use the userSessionToken if making request on behalf of another user
 //
 // For more information: https://docs.tonicpow.com/#c53add03-303e-4f72-8847-2adfdb992eb3
-async function getLink (t, linkId, userSessionToken) {
+async function getLink (t, linkId, userSessionToken='') {
   return axios.get(t.config.apiUrl + version + '/links/details/' + linkId, getOptions(userSessionToken))
 }
 
@@ -509,7 +509,7 @@ module.exports = {
   config: config,
   loaded: false,
   session: session,
-  init: async function (apiKey, environment, customSessionToken) {
+  init: async function (apiKey, environment, customSessionToken='') {
     config.apiKey = apiKey
     config.environment = environment
     wrapAxios(this)
@@ -528,7 +528,7 @@ module.exports = {
       }
     })
   },
-  prolongSession: async function (customSessionToken) {
+  prolongSession: async function (customSessionToken='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -539,7 +539,7 @@ module.exports = {
       }
     })
   },
-  endSession: async function (customSessionToken) {
+  endSession: async function (customSessionToken='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -562,7 +562,7 @@ module.exports = {
       }
     })
   },
-  logoutUser: async function (userSessionToken) {
+  logoutUser: async function (userSessionToken='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -574,7 +574,7 @@ module.exports = {
       }
     })
   },
-  currentUser: async function (userSessionToken) {
+  currentUser: async function (userSessionToken='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -586,7 +586,7 @@ module.exports = {
       }
     })
   },
-  getUser: async function (userId, email) {
+  getUser: async function (userId=0, email='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -619,7 +619,7 @@ module.exports = {
       }
     })
   },
-  updateUser: async function (user, userSessionToken) {
+  updateUser: async function (user, userSessionToken='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -674,7 +674,7 @@ module.exports = {
       }
     })
   },
-  createAdvertiserProfile: async function (profile, userSessionToken) {
+  createAdvertiserProfile: async function (profile, userSessionToken='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -685,7 +685,7 @@ module.exports = {
       }
     })
   },
-  getAdvertiserProfile: async function (profileId, userSessionToken) {
+  getAdvertiserProfile: async function (profileId, userSessionToken='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -696,7 +696,7 @@ module.exports = {
       }
     })
   },
-  updateAdvertiserProfile: async function (profile, userSessionToken) {
+  updateAdvertiserProfile: async function (profile, userSessionToken='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -707,7 +707,7 @@ module.exports = {
       }
     })
   },
-  createCampaign: async function (campaign, userSessionToken) {
+  createCampaign: async function (campaign, userSessionToken='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -718,7 +718,7 @@ module.exports = {
       }
     })
   },
-  getCampaign: async function (campaignId, userSessionToken) {
+  getCampaign: async function (campaignId, userSessionToken='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -740,7 +740,7 @@ module.exports = {
       }
     })
   },
-  updateCampaign: async function (campaign, userSessionToken) {
+  updateCampaign: async function (campaign, userSessionToken='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -751,7 +751,7 @@ module.exports = {
       }
     })
   },
-  listCampaigns: async function (customSessionToken) {
+  listCampaigns: async function (customSessionToken = '') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -762,7 +762,7 @@ module.exports = {
       }
     })
   },
-  createGoal: async function (goal, userSessionToken) {
+  createGoal: async function (goal, userSessionToken='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -773,7 +773,7 @@ module.exports = {
       }
     })
   },
-  getGoal: async function (goalId, userSessionToken) {
+  getGoal: async function (goalId, userSessionToken='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -784,7 +784,7 @@ module.exports = {
       }
     })
   },
-  updateGoal: async function (goal, userSessionToken) {
+  updateGoal: async function (goal, userSessionToken='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -795,7 +795,7 @@ module.exports = {
       }
     })
   },
-  convertGoal: async function (goalName, visitorSessionId, additionalData, customUserId) {
+  convertGoal: async function (goalName, visitorSessionId, additionalData='', customUserId='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -806,7 +806,7 @@ module.exports = {
       }
     })
   },
-  createLink: async function (link, userSessionToken) {
+  createLink: async function (link, userSessionToken='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
@@ -817,7 +817,7 @@ module.exports = {
       }
     })
   },
-  getLink: async function (linkId, userSessionToken) {
+  getLink: async function (linkId, userSessionToken='') {
     return new Promise(async (resolve, reject) => {
       try {
         initCheck(this.loaded)
diff --git a/package.json b/package.json
index 784b279..5339ffd 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "tonicpow-js",
-  "version": "0.1.16",
+  "version": "0.1.17",
   "description": "TonicPow API Library in JS - https://docs.tonicpow.com",
   "main": "lib/api.js",
   "repository": {