diff --git a/common/locales/en/api-v3.json b/common/locales/en/api-v3.json
index fbf7f140ca..cad4c68a88 100644
--- a/common/locales/en/api-v3.json
+++ b/common/locales/en/api-v3.json
@@ -158,5 +158,7 @@
   "pathRequired": "Path string is required",
   "unlocked": "Items have been unlocked",
   "alreadyUnlocked": "Item already unlocked",
-  "cannotRevive": "Cannot revive if not dead"
+  "cannotRevive": "Cannot revive if not dead",
+  "rebirthComplete": "You have been reborn!",
+  "petNotOwned": "You do not own this pet."
 }
diff --git a/common/script/index.js b/common/script/index.js
index 23ef5f95f5..c043af6a0f 100644
--- a/common/script/index.js
+++ b/common/script/index.js
@@ -124,6 +124,7 @@ import releaseMounts from './ops/releaseMounts';
 import sell from './ops/sell';
 import unlock from './ops/unlock';
 import revive from './ops/revive';
+import rebirth from './ops/rebirth';
 
 api.ops = {
   scoreTask,
@@ -149,6 +150,7 @@ api.ops = {
   sell,
   unlock,
   revive,
+  rebirth,
 };
 
 import handleTwoHanded from './fns/handleTwoHanded';
diff --git a/common/script/ops/rebirth.js b/common/script/ops/rebirth.js
index 1ddb75aba1..3739f2c80b 100644
--- a/common/script/ops/rebirth.js
+++ b/common/script/ops/rebirth.js
@@ -1,21 +1,30 @@
-import content from '../content/index';
 import i18n from '../i18n';
 import _ from 'lodash';
 import { capByLevel } from '../statHelpers';
 import { MAX_LEVEL } from '../constants';
+import {
+  NotAuthorized,
+} from '../libs/errors';
+import resetGear from './resetGear';
+import equip from './equip';
+
+const USERSTATSLIST = ['per', 'int', 'con', 'str', 'points', 'gp', 'exp', 'mp'];
+
+module.exports = function rebirth (user, tasks = [], req = {}, analytics) {
+  let analyticsData;
+  let flags;
+  let lvl;
+  let stats;
 
-module.exports = function(user, req, cb, analytics) {
-  var analyticsData, flags, gear, lvl, stats;
   if (user.balance < 2 && user.stats.lvl < MAX_LEVEL) {
-    return typeof cb === "function" ? cb({
-      code: 401,
-      message: i18n.t('notEnoughGems', req.language)
-    }) : void 0;
+    throw new NotAuthorized(i18n.t('notEnoughGems', req.language));
   }
+
   analyticsData = {
     uuid: user._id,
-    category: 'behavior'
+    category: 'behavior',
   };
+
   if (user.stats.lvl < MAX_LEVEL) {
     user.balance -= 2;
     analyticsData.acquireMethod = 'Gems';
@@ -24,62 +33,52 @@ module.exports = function(user, req, cb, analytics) {
     analyticsData.gemCost = 0;
     analyticsData.acquireMethod = '> 100';
   }
-  if (analytics != null) {
+
+  if (analytics) {
     analytics.track('Rebirth', analyticsData);
   }
+
   lvl = capByLevel(user.stats.lvl);
-  _.each(user.tasks, function(task) {
+
+  _.each(tasks, function resetTasks (task) {
     if (task.type !== 'reward') {
       task.value = 0;
     }
     if (task.type === 'daily') {
-      return task.streak = 0;
+      task.streak = 0;
     }
   });
+
   stats = user.stats;
   stats.buffs = {};
   stats.hp = 50;
   stats.lvl = 1;
-  stats["class"] = 'warrior';
-  _.each(['per', 'int', 'con', 'str', 'points', 'gp', 'exp', 'mp'], function(value) {
-    return stats[value] = 0;
-  });
-  // TODO during refactoring: move all gear code from rebirth() to its own function and then call it in reset() as well
-  gear = user.items.gear;
-  _.each(['equipped', 'costume'], function(type) {
-    gear[type] = {};
-    gear[type].armor = 'armor_base_0';
-    gear[type].weapon = 'weapon_warrior_0';
-    gear[type].head = 'head_base_0';
-    return gear[type].shield = 'shield_base_0';
+  stats.class = 'warrior';
+
+  _.each(USERSTATSLIST, function resetStats (value) {
+    stats[value] = 0;
   });
+
+  resetGear(user);
+
   if (user.items.currentPet) {
-    user.ops.equip({
+    equip(user, {
       params: {
         type: 'pet',
-        key: user.items.currentPet
-      }
+        key: user.items.currentPet,
+      },
     });
   }
+
   if (user.items.currentMount) {
-    user.ops.equip({
+    equip(user, {
       params: {
         type: 'mount',
-        key: user.items.currentMount
-      }
+        key: user.items.currentMount,
+      },
     });
   }
-  _.each(gear.owned, function(v, k) {
-    if (gear.owned[k] && content.gear.flat[k].value) {
-      gear.owned[k] = false;
-      return true;
-    }
-  });
-  gear.owned.weapon_warrior_0 = true;
-  if (typeof user.markModified === "function") {
-    user.markModified('items.gear.owned');
-  }
-  user.preferences.costume = false;
+
   flags = user.flags;
   if (!user.achievements.beastMaster) {
     flags.rebirthEnabled = false;
@@ -88,13 +87,21 @@ module.exports = function(user, req, cb, analytics) {
   flags.dropsEnabled = false;
   flags.classSelected = false;
   flags.levelDrops = {};
+
   if (!user.achievements.rebirths) {
     user.achievements.rebirths = 1;
     user.achievements.rebirthLevel = lvl;
-  } else if (lvl > user.achievements.rebirthLevel || lvl === 100) {
+  } else if (lvl > user.achievements.rebirthLevel || lvl === MAX_LEVEL) {
     user.achievements.rebirths++;
     user.achievements.rebirthLevel = lvl;
   }
+
   user.stats.buffs = {};
-  return typeof cb === "function" ? cb(null, user) : void 0;
+
+  let response = {
+    data: user,
+    message: i18n.t('rebirthComplete'),
+  };
+
+  return response;
 };
diff --git a/common/script/ops/resetGear.js b/common/script/ops/resetGear.js
new file mode 100644
index 0000000000..2625f5c9b8
--- /dev/null
+++ b/common/script/ops/resetGear.js
@@ -0,0 +1,25 @@
+import _ from 'lodash';
+import content from '../content/index';
+
+module.exports = function resetGear (user) {
+  let gear = user.items.gear;
+
+  _.each(['equipped', 'costume'], function resetUserGear (type) {
+    gear[type] = {};
+    gear[type].armor = 'armor_base_0';
+    gear[type].weapon = 'weapon_warrior_0';
+    gear[type].head = 'head_base_0';
+    gear[type].shield = 'shield_base_0';
+  });
+
+  // Gear.owned is a Mongo object so the _.each function iterates over hidden properties.
+  // The content.gear.flat[k] check should prevent this causing an error
+  _.each(gear.owned, function resetOwnedGear (v, k) {
+    if (gear.owned[k] && content.gear.flat[k] && content.gear.flat[k].value) {
+      gear.owned[k] = false;
+    }
+  });
+
+  gear.owned.weapon_warrior_0 = true; // eslint-disable-line camelcase
+  user.preferences.costume = false;
+};
diff --git a/tasks/gulp-eslint.js b/tasks/gulp-eslint.js
index 2ea777a0d5..ed79dfc879 100644
--- a/tasks/gulp-eslint.js
+++ b/tasks/gulp-eslint.js
@@ -23,7 +23,6 @@ const COMMON_FILES = [
   '!./common/script/ops/deleteWebhook.js',
   '!./common/script/ops/getTag.js',
   '!./common/script/ops/getTags.js',
-  '!./common/script/ops/rebirth.js',
   '!./common/script/ops/releaseBoth.js',
   '!./common/script/ops/releaseMounts.js',
   '!./common/script/ops/releasePets.js',
diff --git a/test/api/v3/integration/user/POST-user_rebirth.test.js b/test/api/v3/integration/user/POST-user_rebirth.test.js
new file mode 100644
index 0000000000..3591844c3c
--- /dev/null
+++ b/test/api/v3/integration/user/POST-user_rebirth.test.js
@@ -0,0 +1,56 @@
+import {
+  generateUser,
+  generateDaily,
+  generateReward,
+  translate as t,
+} from '../../../../helpers/api-integration/v3';
+
+describe('POST /user/rebirth', () => {
+  let user;
+
+  beforeEach(async () => {
+    user = await generateUser();
+  });
+
+  it('returns an error when user balance is too low', async () => {
+    await expect(user.post('/user/rebirth'))
+      .to.eventually.be.rejected.and.to.eql({
+        code: 401,
+        error: 'NotAuthorized',
+        message: t('notEnoughGems'),
+      });
+  });
+
+  // More tests in common code unit tests
+
+  it('resets user\'s tasks', async () => {
+    await user.update({
+      balance: 2,
+    });
+
+    let daily = await generateDaily({
+      text: 'test habit',
+      type: 'daily',
+      streak: 1,
+      userId: user._id,
+    });
+
+    let reward = await generateReward({
+      text: 'test reward',
+      type: 'reward',
+      value: 1,
+      userId: user._id,
+    });
+
+    let response = await user.post('/user/rebirth');
+    await user.sync();
+
+    let updatedDaily = await user.get(`/tasks/${daily._id}`);
+    let updatedReward = await user.get(`/tasks/${reward._id}`);
+
+    expect(response.message).to.equal(t('rebirthComplete'));
+    expect(updatedDaily.streak).to.equal(0);
+    expect(updatedDaily.value).to.equal(0);
+    expect(updatedReward.value).to.equal(1);
+  });
+});
diff --git a/test/common/ops/rebirth.js b/test/common/ops/rebirth.js
new file mode 100644
index 0000000000..61d1334569
--- /dev/null
+++ b/test/common/ops/rebirth.js
@@ -0,0 +1,188 @@
+import rebirth from '../../../common/script/ops/rebirth';
+import i18n from '../../../common/script/i18n';
+import { MAX_LEVEL } from '../../../common/script/constants';
+import {
+  generateUser,
+  generateDaily,
+  generateReward,
+} from '../../helpers/common.helper';
+import {
+  NotAuthorized,
+} from '../../../common/script/libs/errors';
+
+describe('shared.ops.rebirth', () => {
+  let user;
+  let animal = 'Wolf-Base';
+  let userStats = ['per', 'int', 'con', 'str', 'points', 'gp', 'exp', 'mp'];
+  let tasks = [];
+
+  beforeEach(() => {
+    user = generateUser();
+    user.balance = 2;
+    tasks = [generateDaily(), generateReward()];
+  });
+
+  it('returns an error when user balance is too low and user is less than max level', (done) => {
+    user.balance = 0;
+
+    try {
+      rebirth(user);
+    } catch (err) {
+      expect(err).to.be.an.instanceof(NotAuthorized);
+      expect(err.message).to.equal(i18n.t('notEnoughGems'));
+      done();
+    }
+  });
+
+  it('rebirths a user with enough gems', () => {
+    let response = rebirth(user);
+
+    expect(response.message).to.equal(i18n.t('rebirthComplete'));
+  });
+
+  it('rebirths a user with not enough gems but max level', () => {
+    user.balance = 0;
+    user.stats.lvl = MAX_LEVEL;
+
+    let response = rebirth(user);
+
+    expect(response.message).to.equal(i18n.t('rebirthComplete'));
+  });
+
+  it('resets user\'s taks values except for rewards to 0', () => {
+    tasks[0].value = 1;
+    tasks[1].value = 1;
+
+    rebirth(user, tasks);
+
+    expect(tasks[0].value).to.equal(0);
+    expect(tasks[1].value).to.equal(1);
+  });
+
+  it('resets user\'s daily streaks to 0', () => {
+    tasks[0].streak = 1;
+
+    rebirth(user, tasks);
+
+    expect(tasks[0].streak).to.equal(0);
+  });
+
+  it('resets a user\'s buffs', () => {
+    user.stats.buffs = {test: 'test'};
+
+    rebirth(user);
+
+    expect(user.stats.buffs).to.be.empty;
+  });
+
+  it('resets a user\'s health points', () => {
+    user.stats.hp = 40;
+
+    rebirth(user);
+
+    expect(user.stats.hp).to.equal(50);
+  });
+
+  it('resets a user\'s class', () => {
+    user.stats.class = 'rouge';
+
+    rebirth(user);
+
+    expect(user.stats.class).to.equal('warrior');
+  });
+
+  it('resets a user\'s stats', () => {
+    user.stats.class = 'rouge';
+    _.each(userStats, function setUsersStats (value) {
+      user.stats[value] = 10;
+    });
+
+    rebirth(user);
+
+    _.each(userStats, function resetUserStats (value) {
+      user.stats[value] = 0;
+    });
+  });
+
+  it('resets a user\'s gear', () => {
+    let gearReset = {
+      armor: 'armor_base_0',
+      weapon: 'weapon_warrior_0',
+      head: 'head_base_0',
+      shield: 'shield_base_0',
+    };
+
+    rebirth(user);
+
+    expect(user.items.gear.equipped).to.deep.equal(gearReset);
+    expect(user.items.gear.costume).to.deep.equal(gearReset);
+    expect(user.preferences.costume).to.be.false;
+  });
+
+  it('resets a user\'s gear owned', () => {
+    user.items.gear.owned.weapon_warrior_1 = true; // eslint-disable-line camelcase
+    rebirth(user);
+
+    expect(user.items.gear.owned.weapon_warrior_1).to.be.false;
+    expect(user.items.gear.owned.weapon_warrior_0).to.be.true;
+  });
+
+  it('resets a user\'s current pet', () => {
+    user.items.pets[animal] = true;
+    user.items.currentPet = animal;
+    rebirth(user);
+
+    expect(user.items.currentPet).to.be.empty;
+  });
+
+  it('resets a user\'s current mount', () => {
+    user.items.mounts[animal] = true;
+    user.items.currentMount = animal;
+    rebirth(user);
+
+    expect(user.items.currentMount).to.be.empty;
+  });
+
+  it('resets a user\'s flags', () => {
+    user.flags.itemsEnabled = true;
+    user.flags.dropsEnabled = true;
+    user.flags.classSelected = true;
+    user.flags.rebirthEnabled = true;
+    user.flags.levelDrops = {test: 'test'};
+
+    rebirth(user);
+
+    expect(user.flags.itemsEnabled).to.be.false;
+    expect(user.flags.dropsEnabled).to.be.false;
+    expect(user.flags.classSelected).to.be.false;
+    expect(user.flags.rebirthEnabled).to.be.false;
+    expect(user.flags.levelDrops).to.be.emtpy;
+  });
+
+  it('does not reset rebirthEnabled if user has beastMaster', () => {
+    user.achievements.beastMaster = 1;
+    user.flags.rebirthEnabled = true;
+
+    rebirth(user);
+
+    expect(user.flags.rebirthEnabled).to.be.true;
+  });
+
+  it('sets rebirth achievement', () => {
+    rebirth(user);
+
+    expect(user.achievements.rebirths).to.equal(1);
+    expect(user.achievements.rebirthLevel).to.equal(user.stats.lvl);
+  });
+
+  it('increments rebirth achievemnts', () => {
+    user.stats.lvl = 2;
+    user.achievements.rebirths = 1;
+    user.achievements.rebirthLevel = 1;
+
+    rebirth(user);
+
+    expect(user.achievements.rebirths).to.equal(2);
+    expect(user.achievements.rebirthLevel).to.equal(2);
+  });
+});
diff --git a/website/src/controllers/api-v3/user.js b/website/src/controllers/api-v3/user.js
index 3cc462d444..827e73c34e 100644
--- a/website/src/controllers/api-v3/user.js
+++ b/website/src/controllers/api-v3/user.js
@@ -888,4 +888,33 @@ api.userRevive = {
   },
 };
 
+/*
+* @api {post} /user/rebirth Resets a user.
+* @apiVersion 3.0.0
+* @apiName UserRebirth
+* @apiGroup User
+*
+* @apiSuccess {Object} data `user`
+*/
+api.userRebirth = {
+  method: 'POST',
+  middlewares: [authWithHeaders(), cron],
+  url: '/user/rebirth',
+  async handler (req, res) {
+    let user = res.locals.user;
+    let query = {
+      userId: user._id,
+      type: {$in: ['daily', 'habit', 'todo']},
+    };
+    let tasks = await Tasks.Task.find(query).exec();
+    let rebirthResponse = common.ops.rebirth(user, tasks, req, res.analytics);
+
+    await user.save();
+
+    await Q.all(tasks.map(task => task.save()));
+
+    res.respond(200, rebirthResponse);
+  },
+};
+
 module.exports = api;