diff --git a/common/locales/en/api-v3.json b/common/locales/en/api-v3.json
index 06ba7afd75..faa7ddc984 100644
--- a/common/locales/en/api-v3.json
+++ b/common/locales/en/api-v3.json
@@ -90,5 +90,5 @@
   "noAdminAccess": "You don't have admin access.",
   "pageMustBeNumber": "req.query.page must be a number",
   "missingUnsubscriptionCode": "Missing unsubscription code.",
-  "userNotFound": "User Not Found"
+  "userNotFound": "User not Found"
 }
diff --git a/test/api/v3/integration/meta/models/GET-model_paths.test.js b/test/api/v3/integration/meta/models/GET-model_paths.test.js
new file mode 100644
index 0000000000..f878d391df
--- /dev/null
+++ b/test/api/v3/integration/meta/models/GET-model_paths.test.js
@@ -0,0 +1,30 @@
+import {
+  generateUser,
+  translate as t,
+} from '../../../../../helpers/api-integration/v3';
+
+describe('GET /meta/models/:model/paths', () => {
+  let user;
+
+  before(async () => {
+    user = await generateUser();
+  });
+
+  it('returns an error when model is not accessible or doesn\'t exists', async () => {
+    await expect(user.get('/meta/models/1234/paths')).to.eventually.be.rejected.and.eql({
+      code: 400,
+      error: 'BadRequest',
+      message: t('invalidReqParams'),
+    });
+  });
+
+  let models = ['habit', 'daily', 'todo', 'reward', 'user', 'tag', 'challenge', 'group'];
+  models.forEach(model => {
+    it(`returns the model paths for ${model}`, async () => {
+      let res = await user.get(`/meta/models/${model}/paths`);
+
+      expect(res._id).to.equal('String');
+      expect(res).to.not.have.keys('__v');
+    });
+  });
+});
diff --git a/website/src/controllers/api-v3/email.js b/website/src/controllers/api-v3/email.js
index b3af91b340..4f642d02d6 100644
--- a/website/src/controllers/api-v3/email.js
+++ b/website/src/controllers/api-v3/email.js
@@ -8,7 +8,7 @@ import {
 let api = {};
 
 /**
- * @api {post} /unsubscribe Unsubscribe an email or user from email notifications
+ * @api {post} /email/unsubscribe Unsubscribe an email or user from email notifications
  * @apiVersion 3.0.0
  * @apiName UnsubscribeEmail
  * @apiGroup Unsubscribe
diff --git a/website/src/controllers/api-v3/meta/modelsPaths.js b/website/src/controllers/api-v3/meta/modelsPaths.js
new file mode 100644
index 0000000000..895bc5aa8d
--- /dev/null
+++ b/website/src/controllers/api-v3/meta/modelsPaths.js
@@ -0,0 +1,39 @@
+import mongoose from 'mongoose';
+
+let api = {};
+
+let tasksModels = ['habit', 'daily', 'todo', 'reward'];
+let allModels = ['user', 'tag', 'challenge', 'group'].concat(tasksModels);
+
+/**
+ * @api {get} /meta/models/:model/paths Get all paths for the specified model. Doesn't require authentication
+ * @apiVersion 3.0.0
+ * @apiName GetUserModelPaths
+ * @apiGroup Meta
+ *
+ * @apiParam {string="user","group","challenge","tag","habit","daily","todo","reward"} model The name of the model
+ *
+ * @apiSuccess {object} paths A key-value object made of fieldPath: fieldType (like {'field.nested': Boolean})
+ */
+api.getModelPaths = {
+  method: 'GET',
+  url: '/meta/models/:model/paths',
+  async handler (req, res) {
+    req.checkParams('model', res.t('modelNotFound')).notEmpty().isIn(allModels);
+
+    let validationErrors = req.validationErrors();
+    if (validationErrors) throw validationErrors;
+
+    let model = req.params.model;
+    // tasks models are lowercase, the others have the first letter uppercase (User, Group)
+    if (tasksModels.indexOf(model) === -1) {
+      model = model.charAt(0).toUpperCase() + model.slice(1);
+    }
+
+    model = mongoose.model(model);
+
+    res.respond(200, model.getModelPaths());
+  },
+};
+
+export default api;
diff --git a/website/src/libs/api-v3/baseModel.js b/website/src/libs/api-v3/baseModel.js
index c0331bf924..90b2e0c142 100644
--- a/website/src/libs/api-v3/baseModel.js
+++ b/website/src/libs/api-v3/baseModel.js
@@ -1,6 +1,7 @@
 import { uuid } from '../../../../common';
 import validator from 'validator';
 import objectPath from 'object-path'; // TODO use lodash's unset once v4 is out
+import _ from 'lodash';
 
 export default function baseModel (schema, options = {}) {
   schema.add({
@@ -45,8 +46,9 @@ export default function baseModel (schema, options = {}) {
     return options.sanitizeTransform ? options.sanitizeTransform(objToSanitize) : objToSanitize;
   };
 
-  if (!schema.options.toJSON) schema.options.toJSON = {};
   if (Array.isArray(options.private)) privateFields.push(...options.private);
+
+  if (!schema.options.toJSON) schema.options.toJSON = {};
   schema.options.toJSON.transform = function transformToObject (doc, plainObj) {
     privateFields.forEach((fieldPath) => {
       objectPath.del(plainObj, fieldPath);
@@ -55,4 +57,14 @@ export default function baseModel (schema, options = {}) {
     // Allow an additional toJSON transform function to be used
     return options.toJSONTransform ? options.toJSONTransform(plainObj) : plainObj;
   };
+
+  schema.statics.getModelPaths = function getModelPaths () {
+    return _.reduce(this.schema.paths, (result, field, path) => {
+      if (privateFields.indexOf(path) === -1) {
+        result[path] = field.instance || 'Boolean';
+      }
+
+      return result;
+    }, {});
+  };
 }
diff --git a/website/src/libs/api-v3/setupRoutes.js b/website/src/libs/api-v3/setupRoutes.js
index bfe2ab93e7..05786a1287 100644
--- a/website/src/libs/api-v3/setupRoutes.js
+++ b/website/src/libs/api-v3/setupRoutes.js
@@ -10,19 +10,25 @@ let router = express.Router(); // eslint-disable-line babel/new-cap
 // It takes the async function, execute it and pass any error to next (args[2])
 let _wrapAsyncFn = fn => (...args) => fn(...args).catch(args[2]);
 
-fs
-  .readdirSync(CONTROLLERS_PATH)
-  .filter(fileName => fileName.match(/\.js$/))
-  .filter(fileName => fs.statSync(CONTROLLERS_PATH + fileName).isFile())
-  .forEach((fileName) => {
-    let controller = require(CONTROLLERS_PATH + fileName); // eslint-disable-line global-require
+function walkControllers (filePath) {
+  fs
+    .readdirSync(filePath)
+    .forEach(fileName => {
+      if (!fs.statSync(filePath + fileName).isFile()) {
+        walkControllers(`${filePath}${fileName}/`);
+      } else if (fileName.match(/\.js$/)) {
+        let controller = require(filePath + fileName); // eslint-disable-line global-require
 
-    _.each(controller, (action) => {
-      let {method, url, middlewares = [], handler} = action;
+        _.each(controller, (action) => {
+          let {method, url, middlewares = [], handler} = action;
 
-      method = method.toLowerCase();
-      router[method](url, ...middlewares, _wrapAsyncFn(handler));
+          method = method.toLowerCase();
+          router[method](url, ...middlewares, _wrapAsyncFn(handler));
+        });
+      }
     });
-  });
+}
+
+walkControllers(CONTROLLERS_PATH);
 
 export default router;