diff --git a/common/locales/en/api-v3.json b/common/locales/en/api-v3.json
index 77930e4583..a97308e064 100644
--- a/common/locales/en/api-v3.json
+++ b/common/locales/en/api-v3.json
@@ -49,5 +49,6 @@
   "winnerNotFound": "Winner with id \"<%= userId %>\" not found or not part of the challenge.",
   "noCompletedTodosChallenge": "\"includeComepletedTodos\" is not supported when fetching a challenge tasks.",
   "userTasksNoChallengeId": "When \"tasksOwner\" is \"user\" \"challengeId\" can't be passed.",
-  "onlyChalLeaderEditTasks": "Tasks belonging to a challenge can only be edited by the leader."
+  "onlyChalLeaderEditTasks": "Tasks belonging to a challenge can only be edited by the leader.",
+  "invalidTasksOwner": "\"tasksOwner\" must be \"user\" or \"challenge\"."
 }
diff --git a/test/api/v3/integration/tasks/DELETE-tasks_id.test.js b/test/api/v3/integration/tasks/DELETE-tasks_id.test.js
index 1d3e59ef15..503e484e66 100644
--- a/test/api/v3/integration/tasks/DELETE-tasks_id.test.js
+++ b/test/api/v3/integration/tasks/DELETE-tasks_id.test.js
@@ -16,7 +16,7 @@ describe('DELETE /tasks/:id', () => {
     let task;
 
     beforeEach(() => {
-      return user.post('/tasks', {
+      return user.post('/tasks?tasksOwner=user', {
         text: 'test habit',
         type: 'habit',
       }).then((createdTask) => {
@@ -48,7 +48,7 @@ describe('DELETE /tasks/:id', () => {
     it('cannot delete a task owned by someone else', () => {
       return generateUser()
         .then((anotherUser) => {
-          return anotherUser.post('/tasks', {
+          return anotherUser.post('/tasks?tasksOwner=user', {
             text: 'test habit',
             type: 'habit',
           });
diff --git a/test/api/v3/integration/tasks/GET-tasks.test.js b/test/api/v3/integration/tasks/GET-tasks.test.js
index 3f1c50448d..bf77442ea4 100644
--- a/test/api/v3/integration/tasks/GET-tasks.test.js
+++ b/test/api/v3/integration/tasks/GET-tasks.test.js
@@ -16,14 +16,14 @@ describe('GET /tasks', () => {
   });
 
   it('returns all user\'s tasks', async () => {
-    let createdTasks = await user.post('/tasks', [{text: 'test habit', type: 'habit'}, {text: 'test todo', type: 'todo'}]);
-    let tasks = await user.get('/tasks/user');
+    let createdTasks = await user.post('/tasks?tasksOwner=user', [{text: 'test habit', type: 'habit'}, {text: 'test todo', type: 'todo'}]);
+    let tasks = await user.get('/tasks?tasksOwner=user');
     expect(tasks.length).to.equal(createdTasks.length + 1); // + 1 because 1 is a default task
   });
 
   it('returns only a type of user\'s tasks if req.query.type is specified', async () => {
-    let createdTasks = await user.post('/tasks', [{text: 'test habit', type: 'habit'}, {text: 'test todo', type: 'todo'}]);
-    let tasks = await user.get('/tasks/user?type=habit');
+    let createdTasks = await user.post('/tasks?tasksOwner=user', [{text: 'test habit', type: 'habit'}, {text: 'test todo', type: 'todo'}]);
+    let tasks = await user.get('/tasks?tasksOwner=user&type=habit');
     expect(tasks.length).to.equal(1);
     expect(tasks[0]._id).to.equal(createdTasks[0]._id);
   });
diff --git a/test/api/v3/integration/tasks/GET-tasks_id.test.js b/test/api/v3/integration/tasks/GET-tasks_id.test.js
index a4ae455d6a..b88d8a95a6 100644
--- a/test/api/v3/integration/tasks/GET-tasks_id.test.js
+++ b/test/api/v3/integration/tasks/GET-tasks_id.test.js
@@ -17,7 +17,7 @@ describe('GET /tasks/:id', () => {
     let task;
 
     beforeEach(() => {
-      return user.post('/tasks', {
+      return user.post('/tasks?tasksOwner=user', {
         text: 'test habit',
         type: 'habit',
       }).then((createdTask) => {
@@ -54,7 +54,7 @@ describe('GET /tasks/:id', () => {
         .then((user2) => {
           anotherUser = user2;
 
-          return user.post('/tasks', {
+          return user.post('/tasks?tasksOwner=user', {
             text: 'test habit',
             type: 'habit',
           });
diff --git a/test/api/v3/integration/tasks/POST-tasks.test.js b/test/api/v3/integration/tasks/POST-tasks.test.js
index 245cea7d28..a002119634 100644
--- a/test/api/v3/integration/tasks/POST-tasks.test.js
+++ b/test/api/v3/integration/tasks/POST-tasks.test.js
@@ -14,7 +14,7 @@ describe('POST /tasks', () => {
 
   context('validates params', () => {
     it('returns an error if req.body.type is absent', async () => {
-      return expect(user.post('/tasks', {
+      return expect(user.post('/tasks?tasksOwner=user', {
         notType: 'habit',
       })).to.eventually.be.rejected.and.eql({
         code: 400,
@@ -24,7 +24,7 @@ describe('POST /tasks', () => {
     });
 
     it('returns an error if req.body.type is not valid', async () => {
-      return expect(user.post('/tasks', {
+      return expect(user.post('/tasks?tasksOwner=user', {
         type: 'habitF',
       })).to.eventually.be.rejected.and.eql({
         code: 400,
@@ -34,7 +34,7 @@ describe('POST /tasks', () => {
     });
 
     it('returns an error if one object inside an array is invalid', async () => {
-      return expect(user.post('/tasks', [
+      return expect(user.post('/tasks?tasksOwner=user', [
         {type: 'habitF'},
         {type: 'habit'},
       ])).to.eventually.be.rejected.and.eql({
@@ -45,7 +45,7 @@ describe('POST /tasks', () => {
     });
 
     it('returns an error if req.body.text is absent', async () => {
-      return expect(user.post('/tasks', {
+      return expect(user.post('/tasks?tasksOwner=user', {
         type: 'habit',
       })).to.eventually.be.rejected.and.eql({
         code: 400,
@@ -56,7 +56,7 @@ describe('POST /tasks', () => {
 
     it('does not update user.tasksOrder.{taskType} when the task is not saved because invalid', async () => {
       let originalHabitsOrder = (await user.get('/user')).tasksOrder.habits;
-      return expect(user.post('/tasks', {
+      return expect(user.post('/tasks?tasksOwner=user', {
         type: 'habit',
       })).to.eventually.be.rejected.and.eql({ // this block is necessary
         code: 400,
@@ -71,7 +71,7 @@ describe('POST /tasks', () => {
 
     it('does not update user.tasksOrder.{taskType} when a task inside an array is not saved because invalid', async () => {
       let originalHabitsOrder = (await user.get('/user')).tasksOrder.habits;
-      return expect(user.post('/tasks', [
+      return expect(user.post('/tasks?tasksOwner=user', [
         {type: 'habit'}, // Missing text
         {type: 'habit', text: 'valid'}, // Valid
       ])).to.eventually.be.rejected.and.eql({ // this block is necessary
@@ -86,8 +86,8 @@ describe('POST /tasks', () => {
     });
 
     it('does not save any task sent in an array when 1 is invalid', async () => {
-      let originalTasks = await user.get('/tasks');
-      return expect(user.post('/tasks', [
+      let originalTasks = await user.get('/tasks?tasksOwner=user');
+      return expect(user.post('/tasks?tasksOwner=user', [
         {type: 'habit'}, // Missing text
         {type: 'habit', text: 'valid'}, // Valid
       ])).to.eventually.be.rejected.and.eql({ // this block is necessary
@@ -95,14 +95,14 @@ describe('POST /tasks', () => {
         error: 'BadRequest',
         message: 'habit validation failed',
       }).then(async () => {
-        let updatedTasks = await user.get('/tasks');
+        let updatedTasks = await user.get('/tasks?tasksOwner=user');
 
         expect(updatedTasks).to.eql(originalTasks);
       });
     });
 
     it('automatically sets "task.userId" to user\'s uuid', async () => {
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         text: 'test habit',
         type: 'habit',
       });
@@ -113,7 +113,7 @@ describe('POST /tasks', () => {
     it(`ignores setting userId, history, createdAt,
                         updatedAt, challenge, completed, streak,
                         dateCompleted fields`, async () => {
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         text: 'test daily',
         type: 'daily',
         userId: 123,
@@ -137,7 +137,7 @@ describe('POST /tasks', () => {
     });
 
     it('ignores invalid fields', async () => {
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         text: 'test daily',
         type: 'daily',
         notValid: true,
@@ -149,7 +149,7 @@ describe('POST /tasks', () => {
 
   context('habits', () => {
     it('creates a habit', async () => {
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         text: 'test habit',
         type: 'habit',
         up: false,
@@ -167,7 +167,7 @@ describe('POST /tasks', () => {
 
     it('updates user.tasksOrder.habits when a new habit is created', async () => {
       let originalHabitsOrderLen = (await user.get('/user')).tasksOrder.habits.length;
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         type: 'habit',
         text: 'an habit',
       });
@@ -179,7 +179,7 @@ describe('POST /tasks', () => {
 
     it('updates user.tasksOrder.habits when multiple habits are created', async () => {
       let originalHabitsOrderLen = (await user.get('/user')).tasksOrder.habits.length;
-      let [task, task2] = await user.post('/tasks', [{
+      let [task, task2] = await user.post('/tasks?tasksOwner=user', [{
         type: 'habit',
         text: 'an habit',
       }, {
@@ -194,7 +194,7 @@ describe('POST /tasks', () => {
     });
 
     it('creates multiple habits', async () => {
-      let [task, task2] = await user.post('/tasks', [{
+      let [task, task2] = await user.post('/tasks?tasksOwner=user', [{
         text: 'test habit',
         type: 'habit',
         up: false,
@@ -224,7 +224,7 @@ describe('POST /tasks', () => {
     });
 
     it('defaults to setting up and down to true', async () => {
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         text: 'test habit',
         type: 'habit',
         notes: 1976,
@@ -235,7 +235,7 @@ describe('POST /tasks', () => {
     });
 
     it('cannot create checklists', async () => {
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         text: 'test habit',
         type: 'habit',
         checklist: [
@@ -249,7 +249,7 @@ describe('POST /tasks', () => {
 
   context('todos', () => {
     it('creates a todo', async () => {
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         text: 'test todo',
         type: 'todo',
         notes: 1976,
@@ -262,7 +262,7 @@ describe('POST /tasks', () => {
     });
 
     it('creates multiple todos', async () => {
-      let [task, task2] = await user.post('/tasks', [{
+      let [task, task2] = await user.post('/tasks?tasksOwner=user', [{
         text: 'test todo',
         type: 'todo',
         notes: 1976,
@@ -285,7 +285,7 @@ describe('POST /tasks', () => {
 
     it('updates user.tasksOrder.todos when a new todo is created', async () => {
       let originalTodosOrderLen = (await user.get('/user')).tasksOrder.todos.length;
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         type: 'todo',
         text: 'a todo',
       });
@@ -297,7 +297,7 @@ describe('POST /tasks', () => {
 
     it('updates user.tasksOrder.todos when multiple todos are created', async () => {
       let originalTodosOrderLen = (await user.get('/user')).tasksOrder.todos.length;
-      let [task, task2] = await user.post('/tasks', [{
+      let [task, task2] = await user.post('/tasks?tasksOwner=user', [{
         type: 'todo',
         text: 'a todo',
       }, {
@@ -312,7 +312,7 @@ describe('POST /tasks', () => {
     });
 
     it('can create checklists', async () => {
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         text: 'test todo',
         type: 'todo',
         checklist: [
@@ -333,7 +333,7 @@ describe('POST /tasks', () => {
     it('creates a daily', async () => {
       let now = new Date();
 
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         text: 'test daily',
         type: 'daily',
         notes: 1976,
@@ -352,7 +352,7 @@ describe('POST /tasks', () => {
     });
 
     it('creates multiple dailys', async () => {
-      let [task, task2] = await user.post('/tasks', [{
+      let [task, task2] = await user.post('/tasks?tasksOwner=user', [{
         text: 'test daily',
         type: 'daily',
         notes: 1976,
@@ -375,7 +375,7 @@ describe('POST /tasks', () => {
 
     it('updates user.tasksOrder.dailys when a new daily is created', async () => {
       let originalDailysOrderLen = (await user.get('/user')).tasksOrder.dailys.length;
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         type: 'daily',
         text: 'a daily',
       });
@@ -387,7 +387,7 @@ describe('POST /tasks', () => {
 
     it('updates user.tasksOrder.dailys when multiple dailys are created', async () => {
       let originalDailysOrderLen = (await user.get('/user')).tasksOrder.dailys.length;
-      let [task, task2] = await user.post('/tasks', [{
+      let [task, task2] = await user.post('/tasks?tasksOwner=user', [{
         type: 'daily',
         text: 'a daily',
       }, {
@@ -402,7 +402,7 @@ describe('POST /tasks', () => {
     });
 
     it('defaults to a weekly frequency, with every day set', async () => {
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         text: 'test daily',
         type: 'daily',
       });
@@ -421,7 +421,7 @@ describe('POST /tasks', () => {
     });
 
     it('allows repeat field to be configured', async () => {
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         text: 'test daily',
         type: 'daily',
         repeat: {
@@ -445,7 +445,7 @@ describe('POST /tasks', () => {
     it('defaults startDate to today', async () => {
       let today = (new Date()).getDay();
 
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         text: 'test daily',
         type: 'daily',
       });
@@ -454,7 +454,7 @@ describe('POST /tasks', () => {
     });
 
     it('can create checklists', async () => {
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         text: 'test daily',
         type: 'daily',
         checklist: [
@@ -473,7 +473,7 @@ describe('POST /tasks', () => {
 
   context('rewards', () => {
     it('creates a reward', async () => {
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         text: 'test reward',
         type: 'reward',
         notes: 1976,
@@ -488,7 +488,7 @@ describe('POST /tasks', () => {
     });
 
     it('creates multiple rewards', async () => {
-      let [task, task2] = await user.post('/tasks', [{
+      let [task, task2] = await user.post('/tasks?tasksOwner=user', [{
         text: 'test reward',
         type: 'reward',
         notes: 1976,
@@ -515,7 +515,7 @@ describe('POST /tasks', () => {
 
     it('updates user.tasksOrder.rewards when a new reward is created', async () => {
       let originalRewardsOrderLen = (await user.get('/user')).tasksOrder.rewards.length;
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         type: 'reward',
         text: 'a reward',
       });
@@ -527,7 +527,7 @@ describe('POST /tasks', () => {
 
     it('updates user.tasksOrder.dreward when multiple rewards are created', async () => {
       let originalRewardsOrderLen = (await user.get('/user')).tasksOrder.rewards.length;
-      let [task, task2] = await user.post('/tasks', [{
+      let [task, task2] = await user.post('/tasks?tasksOwner=user', [{
         type: 'reward',
         text: 'a reward',
       }, {
@@ -542,7 +542,7 @@ describe('POST /tasks', () => {
     });
 
     it('defaults to a 0 value', async () => {
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         text: 'test reward',
         type: 'reward',
       });
@@ -551,7 +551,7 @@ describe('POST /tasks', () => {
     });
 
     it('requires value to be coerced into a number', async () => {
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         text: 'test reward',
         type: 'reward',
         value: '10',
@@ -561,7 +561,7 @@ describe('POST /tasks', () => {
     });
 
     it('cannot create checklists', async () => {
-      let task = await user.post('/tasks', {
+      let task = await user.post('/tasks?tasksOwner=user', {
         text: 'test reward',
         type: 'reward',
         checklist: [
diff --git a/test/api/v3/integration/tasks/POST-tasks_id_score_direction.test.js b/test/api/v3/integration/tasks/POST-tasks_id_score_direction.test.js
index 2978d93657..1c552613b4 100644
--- a/test/api/v3/integration/tasks/POST-tasks_id_score_direction.test.js
+++ b/test/api/v3/integration/tasks/POST-tasks_id_score_direction.test.js
@@ -37,7 +37,7 @@ describe('POST /tasks/:id/score/:direction', () => {
     let todo;
 
     beforeEach(() => {
-      return user.post('/tasks', {
+      return user.post('/tasks?tasksOwner=user', {
         text: 'test todo',
         type: 'todo',
       }).then((task) => {
@@ -149,7 +149,7 @@ describe('POST /tasks/:id/score/:direction', () => {
     let daily;
 
     beforeEach(() => {
-      return user.post('/tasks', {
+      return user.post('/tasks?tasksOwner=user', {
         text: 'test daily',
         type: 'daily',
       }).then((task) => {
@@ -226,26 +226,26 @@ describe('POST /tasks/:id/score/:direction', () => {
     let habit, minusHabit, plusHabit, neitherHabit; // eslint-disable-line no-unused-vars
 
     beforeEach(() => {
-      return user.post('/tasks', {
+      return user.post('/tasks?tasksOwner=user', {
         text: 'test habit',
         type: 'habit',
       }).then((task) => {
         habit = task;
-        return user.post('/tasks', {
+        return user.post('/tasks?tasksOwner=user', {
           text: 'test min habit',
           type: 'habit',
           up: false,
         });
       }).then((task) => {
         minusHabit = task;
-        return user.post('/tasks', {
+        return user.post('/tasks?tasksOwner=user', {
           text: 'test plus habit',
           type: 'habit',
           down: false,
         });
       }).then((task) => {
         plusHabit = task;
-        user.post('/tasks', {
+        user.post('/tasks?tasksOwner=user', {
           text: 'test neither habit',
           type: 'habit',
           up: false,
@@ -297,7 +297,7 @@ describe('POST /tasks/:id/score/:direction', () => {
     let reward;
 
     beforeEach(() => {
-      return user.post('/tasks', {
+      return user.post('/tasks?tasksOwner=user', {
         text: 'test reward',
         type: 'reward',
         value: 5,
diff --git a/test/api/v3/integration/tasks/PUT-tasks_id.test.js b/test/api/v3/integration/tasks/PUT-tasks_id.test.js
index 3092d3bd84..408ef92e99 100644
--- a/test/api/v3/integration/tasks/PUT-tasks_id.test.js
+++ b/test/api/v3/integration/tasks/PUT-tasks_id.test.js
@@ -16,7 +16,7 @@ describe('PUT /tasks/:id', () => {
     let task;
 
     beforeEach(() => {
-      return user.post('/tasks', {
+      return user.post('/tasks?tasksOwner=user', {
         text: 'test habit',
         type: 'habit',
       }).then((createdTask) => {
@@ -65,7 +65,7 @@ describe('PUT /tasks/:id', () => {
     let habit;
 
     beforeEach(() => {
-      return user.post('/tasks', {
+      return user.post('/tasks?tasksOwner=user', {
         text: 'test habit',
         type: 'habit',
         notes: 1976,
@@ -93,7 +93,7 @@ describe('PUT /tasks/:id', () => {
     let todo;
 
     beforeEach(() => {
-      return user.post('/tasks', {
+      return user.post('/tasks?tasksOwner=user', {
         text: 'test todo',
         type: 'todo',
         notes: 1976,
@@ -150,7 +150,7 @@ describe('PUT /tasks/:id', () => {
     let daily;
 
     beforeEach(() => {
-      return user.post('/tasks', {
+      return user.post('/tasks?tasksOwner=user', {
         text: 'test daily',
         type: 'daily',
         notes: 1976,
@@ -254,7 +254,7 @@ describe('PUT /tasks/:id', () => {
     let reward;
 
     beforeEach(() => {
-      return user.post('/tasks', {
+      return user.post('/tasks?tasksOwner=user', {
         text: 'test reward',
         type: 'reward',
         notes: 1976,
diff --git a/test/api/v3/integration/tasks/checklists/DELETE-tasks_taskId_checklist_itemId.test.js b/test/api/v3/integration/tasks/checklists/DELETE-tasks_taskId_checklist_itemId.test.js
index d013878a74..738255996a 100644
--- a/test/api/v3/integration/tasks/checklists/DELETE-tasks_taskId_checklist_itemId.test.js
+++ b/test/api/v3/integration/tasks/checklists/DELETE-tasks_taskId_checklist_itemId.test.js
@@ -16,7 +16,7 @@ describe('DELETE /tasks/:taskId/checklist/:itemId', () => {
   it('deletes a checklist item', () => {
     let task;
 
-    return user.post('/tasks', {
+    return user.post('/tasks?tasksOwner=user', {
       type: 'daily',
       text: 'Daily with checklist',
     }).then(createdTask => {
@@ -33,7 +33,7 @@ describe('DELETE /tasks/:taskId/checklist/:itemId', () => {
 
   it('does not work with habits', () => {
     let habit;
-    return expect(user.post('/tasks', {
+    return expect(user.post('/tasks?tasksOwner=user', {
       type: 'habit',
       text: 'habit with checklist',
     }).then(createdTask => {
@@ -47,7 +47,7 @@ describe('DELETE /tasks/:taskId/checklist/:itemId', () => {
   });
 
   it('does not work with rewards', async () => {
-    let reward = await user.post('/tasks', {
+    let reward = await user.post('/tasks?tasksOwner=user', {
       type: 'reward',
       text: 'reward with checklist',
     });
@@ -68,7 +68,7 @@ describe('DELETE /tasks/:taskId/checklist/:itemId', () => {
   });
 
   it('fails on checklist item not found', () => {
-    return expect(user.post('/tasks', {
+    return expect(user.post('/tasks?tasksOwner=user', {
       type: 'daily',
       text: 'daily with checklist',
     }).then(createdTask => {
diff --git a/test/api/v3/integration/tasks/checklists/POST-tasks_taskId_checklist.test.js b/test/api/v3/integration/tasks/checklists/POST-tasks_taskId_checklist.test.js
index e9b695effd..1ad4f7f58c 100644
--- a/test/api/v3/integration/tasks/checklists/POST-tasks_taskId_checklist.test.js
+++ b/test/api/v3/integration/tasks/checklists/POST-tasks_taskId_checklist.test.js
@@ -16,7 +16,7 @@ describe('POST /tasks/:taskId/checklist/', () => {
   it('adds a checklist item to a task', () => {
     let task;
 
-    return user.post('/tasks', {
+    return user.post('/tasks?tasksOwner=user', {
       type: 'daily',
       text: 'Daily with checklist',
     }).then(createdTask => {
@@ -36,7 +36,7 @@ describe('POST /tasks/:taskId/checklist/', () => {
   it('does not add a checklist to habits', () => {
     let habit;
 
-    return expect(user.post('/tasks', {
+    return expect(user.post('/tasks?tasksOwner=user', {
       type: 'habit',
       text: 'habit with checklist',
     }).then(createdTask => {
@@ -51,7 +51,7 @@ describe('POST /tasks/:taskId/checklist/', () => {
 
   it('does not add a checklist to rewards', () => {
     let reward;
-    return expect(user.post('/tasks', {
+    return expect(user.post('/tasks?tasksOwner=user', {
       type: 'reward',
       text: 'reward with checklist',
     }).then(createdTask => {
diff --git a/test/api/v3/integration/tasks/checklists/POST-tasks_taskId_checklist_itemId_score.test.js b/test/api/v3/integration/tasks/checklists/POST-tasks_taskId_checklist_itemId_score.test.js
index 667ef41446..862b67b638 100644
--- a/test/api/v3/integration/tasks/checklists/POST-tasks_taskId_checklist_itemId_score.test.js
+++ b/test/api/v3/integration/tasks/checklists/POST-tasks_taskId_checklist_itemId_score.test.js
@@ -16,7 +16,7 @@ describe('POST /tasks/:taskId/checklist/:itemId/score', () => {
   it('scores a checklist item', () => {
     let task;
 
-    return user.post('/tasks', {
+    return user.post('/tasks?tasksOwner=user', {
       type: 'daily',
       text: 'Daily with checklist',
     }).then(createdTask => {
@@ -32,7 +32,7 @@ describe('POST /tasks/:taskId/checklist/:itemId/score', () => {
 
   it('fails on habits', () => {
     let habit;
-    return expect(user.post('/tasks', {
+    return expect(user.post('/tasks?tasksOwner=user', {
       type: 'habit',
       text: 'habit with checklist',
     }).then(createdTask => {
@@ -46,7 +46,7 @@ describe('POST /tasks/:taskId/checklist/:itemId/score', () => {
   });
 
   it('fails on rewards', async () => {
-    let reward = await user.post('/tasks', {
+    let reward = await user.post('/tasks?tasksOwner=user', {
       type: 'reward',
       text: 'reward with checklist',
     });
@@ -67,7 +67,7 @@ describe('POST /tasks/:taskId/checklist/:itemId/score', () => {
   });
 
   it('fails on checklist item not found', () => {
-    return expect(user.post('/tasks', {
+    return expect(user.post('/tasks?tasksOwner=user', {
       type: 'daily',
       text: 'daily with checklist',
     }).then(createdTask => {
diff --git a/test/api/v3/integration/tasks/checklists/PUT-tasks_taskId_checklist_itemId.test.js b/test/api/v3/integration/tasks/checklists/PUT-tasks_taskId_checklist_itemId.test.js
index 988574bbf8..ae6babf778 100644
--- a/test/api/v3/integration/tasks/checklists/PUT-tasks_taskId_checklist_itemId.test.js
+++ b/test/api/v3/integration/tasks/checklists/PUT-tasks_taskId_checklist_itemId.test.js
@@ -16,7 +16,7 @@ describe('PUT /tasks/:taskId/checklist/:itemId', () => {
   it('updates a checklist item', () => {
     let task;
 
-    return user.post('/tasks', {
+    return user.post('/tasks?tasksOwner=user', {
       type: 'daily',
       text: 'Daily with checklist',
     }).then(createdTask => {
@@ -33,7 +33,7 @@ describe('PUT /tasks/:taskId/checklist/:itemId', () => {
   });
 
   it('fails on habits', async () => {
-    let habit = await user.post('/tasks', {
+    let habit = await user.post('/tasks?tasksOwner=user', {
       type: 'habit',
       text: 'habit with checklist',
     });
@@ -46,7 +46,7 @@ describe('PUT /tasks/:taskId/checklist/:itemId', () => {
   });
 
   it('fails on rewards', async () => {
-    let reward = await user.post('/tasks', {
+    let reward = await user.post('/tasks?tasksOwner=user', {
       type: 'reward',
       text: 'reward with checklist',
     });
@@ -67,7 +67,7 @@ describe('PUT /tasks/:taskId/checklist/:itemId', () => {
   });
 
   it('fails on checklist item not found', () => {
-    return expect(user.post('/tasks', {
+    return expect(user.post('/tasks?tasksOwner=user', {
       type: 'daily',
       text: 'daily with checklist',
     }).then(createdTask => {
diff --git a/test/api/v3/integration/tasks/tags/DELETE-tasks_taskId_tags_tagId.test.js b/test/api/v3/integration/tasks/tags/DELETE-tasks_taskId_tags_tagId.test.js
index c01b71fa2c..27d57bb2f0 100644
--- a/test/api/v3/integration/tasks/tags/DELETE-tasks_taskId_tags_tagId.test.js
+++ b/test/api/v3/integration/tasks/tags/DELETE-tasks_taskId_tags_tagId.test.js
@@ -17,7 +17,7 @@ describe('DELETE /tasks/:taskId/tags/:tagId', () => {
     let tag;
     let task;
 
-    return user.post('/tasks', {
+    return user.post('/tasks?tasksOwner=user', {
       type: 'habit',
       text: 'Task with tag',
     }).then(createdTask => {
@@ -35,7 +35,7 @@ describe('DELETE /tasks/:taskId/tags/:tagId', () => {
   });
 
   it('only deletes existing tags', () => {
-    return expect(user.post('/tasks', {
+    return expect(user.post('/tasks?tasksOwner=user', {
       type: 'habit',
       text: 'Task with tag',
     }).then(createdTask => {
diff --git a/test/api/v3/integration/tasks/tags/POST-tasks_taskId_tags_tagId.test.js b/test/api/v3/integration/tasks/tags/POST-tasks_taskId_tags_tagId.test.js
index 6e4c2ba510..9887a5bedb 100644
--- a/test/api/v3/integration/tasks/tags/POST-tasks_taskId_tags_tagId.test.js
+++ b/test/api/v3/integration/tasks/tags/POST-tasks_taskId_tags_tagId.test.js
@@ -17,7 +17,7 @@ describe('POST /tasks/:taskId/tags/:tagId', () => {
     let tag;
     let task;
 
-    return user.post('/tasks', {
+    return user.post('/tasks?tasksOwner=user', {
       type: 'habit',
       text: 'Task with tag',
     }).then(createdTask => {
@@ -35,7 +35,7 @@ describe('POST /tasks/:taskId/tags/:tagId', () => {
     let tag;
     let task;
 
-    return expect(user.post('/tasks', {
+    return expect(user.post('/tasks?tasksOwner=user', {
       type: 'habit',
       text: 'Task with tag',
     }).then(createdTask => {
@@ -54,7 +54,7 @@ describe('POST /tasks/:taskId/tags/:tagId', () => {
   });
 
   it('does not add a non existing tag to a task', () => {
-    return expect(user.post('/tasks', {
+    return expect(user.post('/tasks?tasksOwner=user', {
       type: 'habit',
       text: 'Task with tag',
     }).then((task) => {
diff --git a/website/src/controllers/api-v3/tasks.js b/website/src/controllers/api-v3/tasks.js
index 40425c27a3..6ea130e843 100644
--- a/website/src/controllers/api-v3/tasks.js
+++ b/website/src/controllers/api-v3/tasks.js
@@ -22,20 +22,26 @@ let api = {};
  * @apiName CreateTask
  * @apiGroup Task
  *
- * @apiParam {string="user","challenge"} tasksOwner Define if tasks will belong to the auhenticated user or to a challenge (specifying the "challengeId" parameter).
- * @apiParam {UUID} challengeId Optional. If "tasksOwner" is "challenge" then specify the challenge id.
+ * @apiParam {string="user","challenge"} tasksOwner Query parameter to define if tasks will belong to the auhenticated user or to a challenge (specifying the "challengeId" parameter).
+ * @apiParam {UUID} challengeId Optional. Query parameter. If "tasksOwner" is "challenge" then specify the challenge id.
  *
  * @apiSuccess {Object|Array} task The newly created task(s)
  */
 api.createTask = {
   method: 'POST',
-  url: '/tasks/:tasksOwner/:challengeId?',
+  url: '/tasks',
   middlewares: [authWithHeaders(), cron],
   async handler (req, res) {
+    req.checkQuery('tasksOwner', res.t('invalidTasksOwner')).isIn(['user', 'challenge']);
+    req.checkQuery('challengeId', res.t('challengeIdRequired')).optional().isUUID();
+
+    let validationErrors = req.validationErrors();
+    if (validationErrors) throw validationErrors;
+
     let tasksData = Array.isArray(req.body) ? req.body : [req.body];
     let user = res.locals.user;
-    let tasksOwner = req.params.tasksOwner;
-    let challengeId = req.params.challengeId;
+    let tasksOwner = req.query.tasksOwner;
+    let challengeId = req.query.challengeId;
     let challenge;
 
     if (tasksOwner === 'user' && challengeId) throw new BadRequest(res.t('userTasksNoChallengeId'));
@@ -79,8 +85,13 @@ api.createTask = {
     toSave.unshift((challenge || user).save());
 
     let tasks = await Q.all(toSave);
-    tasks.splice(0, 1); // remove the user/challenge
-    res.respond(201, tasks);
+
+    if (tasks.length === 2) {
+      res.respond(201, tasks[1]);
+    } else {
+      tasks.splice(0, 1); // remove the user/challenge
+      res.respond(201, tasks);
+    }
 
     // If adding tasks to a challenge -> sync users
     if (challenge) challenge.addTasks(tasks); // TODO catch/log
@@ -93,8 +104,8 @@ api.createTask = {
  * @apiName GetTasks
  * @apiGroup Task
  *
- * @apiParam {string="user","challenge"} tasksOwner Url parameter to return tasks belonging to a challenge (specifying the "challengeId" parameter) or to the autheticated user.
- * @apiParam {UUID} challengeId Optional. If "tasksOwner" is "challenge" then specify the challenge id.
+ * @apiParam {string="user","challenge"} tasksOwner Query parameter to return tasks belonging to a challenge (specifying the "challengeId" parameter) or to the autheticated user.
+ * @apiParam {UUID} challengeId Optional query parameter. If "tasksOwner" is "challenge" then required to specify the challenge id.
  * @apiParam {string="habit","daily","todo","reward"} type Optional query parameter to return just a type of tasks
  * @apiParam {boolean} includeCompletedTodos Optional query parameter to include completed todos when "type" is "todo". Only valid whe "tasksOwner" is "user".
  *
@@ -102,20 +113,19 @@ api.createTask = {
  */
 api.getTasks = {
   method: 'GET',
-  url: '/tasks/:tasksOwner/:challengeId?',
+  url: '/tasks',
   middlewares: [authWithHeaders(), cron],
   async handler (req, res) {
-    req.checkParams('tasksOwner', res.t('invalidTasksOwner')).isIn(['user', 'challenge']);
-    req.checkParams('challengeId', res.t('challengeIdRequired')).optional().isUUID();
-
+    req.checkQuery('tasksOwner', res.t('invalidTasksOwner')).isIn(['user', 'challenge']);
+    req.checkQuery('challengeId', res.t('challengeIdRequired')).optional().isUUID();
     req.checkQuery('type', res.t('invalidTaskType')).optional().isIn(Tasks.tasksTypes);
 
     let validationErrors = req.validationErrors();
     if (validationErrors) throw validationErrors;
 
     let user = res.locals.user;
-    let tasksOwner = req.params.tasksOwner;
-    let challengeId = req.params.challengeId;
+    let tasksOwner = req.query.tasksOwner;
+    let challengeId = req.query.challengeId;
     let challenge;
 
     if (tasksOwner === 'user' && challengeId) throw new BadRequest(res.t('userTasksNoChallengeId'));