diff --git a/packages/api/src/controllers/v2/community/details.ts b/packages/api/src/controllers/v2/community/details.ts
index f91c74521..ecdeecf32 100644
--- a/packages/api/src/controllers/v2/community/details.ts
+++ b/packages/api/src/controllers/v2/community/details.ts
@@ -1,6 +1,6 @@
 import { Request, Response } from 'express';
+import { config, services } from '@impactmarket/core';
 import { getAddress } from '@ethersproject/address';
-import { services } from '@impactmarket/core';
 
 import { RequestWithUser } from '../../../middlewares/core';
 import { standardResponse } from '../../../utils/api';
@@ -16,30 +16,18 @@ class CommunityController {
     getManagers = (req: RequestWithUser, res: Response) => {
         const community = req.params.id;
         const { search } = req.query;
-        let { state, offset, limit, orderBy } = req.query;
-        if (state === undefined || typeof state !== 'string') {
-            state = undefined;
-        }
-        if (offset === undefined || typeof offset !== 'string') {
-            offset = '0';
-        }
-        if (limit === undefined || typeof limit !== 'string') {
-            limit = '5';
-        }
-        if (orderBy === undefined || typeof orderBy !== 'string') {
-            orderBy = undefined;
-        }
+        const { state, offset, limit, orderBy } = req.query;
 
         this.detailsService
             .listManagers(
                 parseInt(community, 10),
-                parseInt(offset, 10),
-                parseInt(limit, 10),
+                offset ? parseInt(offset as string, 10) : config.defaultOffset,
+                limit ? parseInt(limit as string, 10) : config.defaultLimit,
                 {
-                    state: state ? parseInt(state, 10) : undefined
+                    state: state ? parseInt(state as string, 10) : undefined
                 },
                 search !== undefined && typeof search === 'string' ? search : undefined,
-                orderBy,
+                orderBy as string,
                 req.user?.address
             )
             .then(r => standardResponse(res, 200, true, r))
@@ -57,35 +45,23 @@ class CommunityController {
             return;
         }
         const { suspect, inactivity, unidentified, loginInactivity, search, lastActivity_lt } = req.query;
-        let { state, offset, limit, orderBy } = req.query;
-        if (state === undefined || typeof state !== 'string') {
-            state = undefined;
-        }
-        if (offset === undefined || typeof offset !== 'string') {
-            offset = '0';
-        }
-        if (limit === undefined || typeof limit !== 'string') {
-            limit = '5';
-        }
-        if (orderBy === undefined || typeof orderBy !== 'string') {
-            orderBy = undefined;
-        }
+        const { state, offset, limit, orderBy } = req.query;
         this.detailsService
             .listBeneficiaries(
                 req.user.address,
                 parseInt(req.params.id, 10),
-                parseInt(offset, 10),
-                parseInt(limit, 10),
+                offset ? parseInt(offset as string, 10) : config.defaultOffset,
+                limit ? parseInt(limit as string, 10) : config.defaultLimit,
                 {
-                    state: state ? parseInt(state, 10) : undefined,
+                    state: state ? parseInt(state as string, 10) : undefined,
                     suspect: suspect ? suspect === 'true' : undefined,
                     inactivity: inactivity ? inactivity === 'true' : undefined,
                     unidentified: unidentified ? unidentified === 'true' : undefined,
                     loginInactivity: loginInactivity ? loginInactivity === 'true' : undefined
                 },
                 search !== undefined && typeof search === 'string' ? search : undefined,
-                orderBy,
-                lastActivity_lt && typeof lastActivity_lt === 'string' ? parseInt(lastActivity_lt, 10) : undefined
+                orderBy as string,
+                lastActivity_lt ? parseInt(lastActivity_lt as string, 10) : undefined
             )
             .then(r => standardResponse(res, 200, true, r))
             .catch(e => standardResponse(res, 400, false, '', { error: e }));
@@ -93,12 +69,7 @@ class CommunityController {
 
     findBy = (req: RequestWithUser, res: Response) => {
         const { idOrAddress } = req.params;
-        if (idOrAddress.startsWith('0x')) {
-            this.detailsService
-                .findByContractAddress(getAddress(idOrAddress), req.user?.address, req.query)
-                .then(community => standardResponse(res, 200, !!community, community))
-                .catch(e => standardResponse(res, 400, false, '', { error: e }));
-        } else {
+        if (typeof idOrAddress === 'number') {
             const communityId = parseInt(idOrAddress, 10);
             if (!communityId) {
                 standardResponse(res, 400, false, '', {
@@ -114,6 +85,11 @@ class CommunityController {
                 .findById(communityId, req.user?.address, req.query)
                 .then(community => standardResponse(res, 200, true, community))
                 .catch(e => standardResponse(res, 400, false, '', { error: e }));
+        } else {
+            this.detailsService
+                .findByContractAddress(getAddress(idOrAddress), req.user?.address, req.query)
+                .then(community => standardResponse(res, 200, !!community, community))
+                .catch(e => standardResponse(res, 400, false, '', { error: e }));
         }
     };
 
diff --git a/packages/api/src/routes/v2/community/create.ts b/packages/api/src/routes/v2/community/create.ts
index 8c3d4e4a5..cab2c47e8 100644
--- a/packages/api/src/routes/v2/community/create.ts
+++ b/packages/api/src/routes/v2/community/create.ts
@@ -2,7 +2,7 @@ import { Router } from 'express';
 
 import { CommunityController } from '../../../controllers/v2/community/create';
 import { authenticateToken, verifySignature } from '../../../middlewares';
-import CommunityValidator from '../../../validators/community';
+import { create, edit, editSubmission, review } from '../../../validators/community';
 
 export default (route: Router): void => {
     const controller = new CommunityController();
@@ -96,7 +96,7 @@ export default (route: Router): void => {
      *     security:
      *     - BearerToken: []
      */
-    route.post('/', authenticateToken, CommunityValidator.create, controller.create);
+    route.post('/', authenticateToken, create, controller.create);
 
     /**
      * @swagger
@@ -179,7 +179,7 @@ export default (route: Router): void => {
      *     security:
      *     - BearerToken: []
      */
-    route.patch('/:id', authenticateToken, CommunityValidator.editSubmission, controller.editSubmission);
+    route.patch('/:id', authenticateToken, editSubmission, controller.editSubmission);
 
     /**
      * @swagger
@@ -213,7 +213,7 @@ export default (route: Router): void => {
      *     security:
      *     - BearerToken: []
      */
-    route.put('/:id/review', authenticateToken, CommunityValidator.review, controller.review);
+    route.put('/:id/review', authenticateToken, review, controller.review);
 
     /**
      * @swagger
@@ -254,5 +254,5 @@ export default (route: Router): void => {
      *     - SignatureMessage: []
      *     - Signature: []
      */
-    route.put('/:id', authenticateToken, verifySignature, CommunityValidator.edit, controller.edit);
+    route.put('/:id', authenticateToken, verifySignature, edit, controller.edit);
 };
diff --git a/packages/api/src/routes/v2/community/details.ts b/packages/api/src/routes/v2/community/details.ts
index 2ae0d775e..e1deda77f 100644
--- a/packages/api/src/routes/v2/community/details.ts
+++ b/packages/api/src/routes/v2/community/details.ts
@@ -5,6 +5,11 @@ import { CommunityController } from '../../../controllers/v2/community/details';
 import { authenticateToken, optionalAuthentication, verifySignature } from '../../../middlewares';
 import { cache } from '../../../middlewares/cache-redis';
 import { cacheIntervals } from '../../../utils/api';
+import {
+    getBeneficiariesValidator,
+    getCommunityByIDOrAddressValidator,
+    getCommunityValidator
+} from '../../../validators/community';
 
 const upload = multer({
     storage: multer.memoryStorage(),
@@ -123,7 +128,7 @@ export default (route: Router): void => {
      *             schema:
      *               $ref: '#/components/schemas/getManagersResponse'
      */
-    route.get('/:id/managers/:query?', optionalAuthentication, controller.getManagers);
+    route.get('/:id/managers/:query?', optionalAuthentication, getCommunityValidator, controller.getManagers);
 
     /**
      * @swagger
@@ -148,7 +153,7 @@ export default (route: Router): void => {
      *             schema:
      *               $ref: '#/components/schemas/UbiCommunityContract'
      */
-    route.get('/:id/contract', controller.getContract);
+    route.get('/:id/contract', getCommunityValidator, controller.getContract);
 
     /**
      * @swagger
@@ -173,7 +178,7 @@ export default (route: Router): void => {
      *             schema:
      *               $ref: '#/components/schemas/UbiCommunityContract'
      */
-    route.get('/:id/ambassador', optionalAuthentication, controller.getAmbassador);
+    route.get('/:id/ambassador', getCommunityValidator, optionalAuthentication, controller.getAmbassador);
 
     /**
      * @swagger
@@ -194,7 +199,7 @@ export default (route: Router): void => {
      *       "200":
      *         description: OK
      */
-    route.get('/:id/merchant', controller.getMerchant);
+    route.get('/:id/merchant', getCommunityValidator, controller.getMerchant);
 
     /**
      * @swagger
@@ -259,7 +264,8 @@ export default (route: Router): void => {
     route.get(
         '/:id/beneficiaries/:query?',
         authenticateToken,
-        cache(cacheIntervals.halfHour),
+        // cache(cacheIntervals.halfHour),
+        getBeneficiariesValidator,
         controller.getBeneficiaries
     );
 
@@ -293,7 +299,7 @@ export default (route: Router): void => {
      *                   longitude:
      *                     type: integer
      */
-    route.get('/:id/claims-location', cache(cacheIntervals.oneDay), controller.getClaimLocation);
+    route.get('/:id/claims-location', cache(cacheIntervals.oneDay), getCommunityValidator, controller.getClaimLocation);
 
     /**
      * @swagger
@@ -341,7 +347,7 @@ export default (route: Router): void => {
      *             schema:
      *               $ref: '#/components/schemas/UbiPromoter'
      */
-    route.get('/:id/promoter', controller.getPromoter);
+    route.get('/:id/promoter', getCommunityValidator, controller.getPromoter);
 
     /**
      * @swagger
@@ -401,7 +407,7 @@ export default (route: Router): void => {
      *             schema:
      *               $ref: '#/components/schemas/UbiCommunityCampaign'
      */
-    route.get('/:id/campaign', cache(cacheIntervals.oneHour), controller.getCampaign);
+    route.get('/:id/campaign', cache(cacheIntervals.oneHour), getCommunityValidator, controller.getCampaign);
 
     /**
      * @swagger
@@ -433,5 +439,5 @@ export default (route: Router): void => {
      *             schema:
      *               $ref: '#/components/schemas/UbiCommunity'
      */
-    route.get('/:idOrAddress/:query?', optionalAuthentication, controller.findBy);
+    route.get('/:idOrAddress/:query?', optionalAuthentication, getCommunityByIDOrAddressValidator, controller.findBy);
 };
diff --git a/packages/api/src/routes/v2/learnAndEarn.ts b/packages/api/src/routes/v2/learnAndEarn.ts
index a35c05af8..f23d152fe 100644
--- a/packages/api/src/routes/v2/learnAndEarn.ts
+++ b/packages/api/src/routes/v2/learnAndEarn.ts
@@ -1,14 +1,20 @@
 import { Router } from 'express';
 
+import {
+    answer,
+    createLevel,
+    listLessonsValidator,
+    listLevels,
+    registerClaimRewards,
+    startLesson
+} from '../../validators/learnAndEarn';
 import { authenticateToken, optionalAuthentication } from '../../middlewares';
 import { cache } from '../../middlewares/cache-redis';
 import { cacheIntervals } from '../../utils/api';
 import LearnAndEarnController from '../../controllers/v2/learnAndEarn';
-import LearnAndEarnValidator from '../../validators/learnAndEarn';
 
 export default (app: Router): void => {
     const learnAndEarnController = new LearnAndEarnController();
-    const learnAndEarnValidator = new LearnAndEarnValidator();
     const route = Router();
     app.use('/learn-and-earn', route);
 
@@ -68,7 +74,7 @@ export default (app: Router): void => {
         '/levels',
         optionalAuthentication,
         cache(cacheIntervals.halfHour, true),
-        learnAndEarnValidator.listLevels,
+        listLevels,
         learnAndEarnController.listLevels
     );
 
@@ -102,14 +108,9 @@ export default (app: Router): void => {
      *     security:
      *     - BearerToken: []
      */
-    route.post('/levels', authenticateToken, learnAndEarnValidator.createLevel, learnAndEarnController.createLevel);
+    route.post('/levels', authenticateToken, createLevel, learnAndEarnController.createLevel);
 
-    route.put(
-        '/levels',
-        authenticateToken,
-        learnAndEarnValidator.registerClaimRewards,
-        learnAndEarnController.registerClaimRewards
-    );
+    route.put('/levels', authenticateToken, registerClaimRewards, learnAndEarnController.registerClaimRewards);
 
     /**
      * @swagger
@@ -136,6 +137,7 @@ export default (app: Router): void => {
         '/levels/:id',
         optionalAuthentication,
         cache(cacheIntervals.halfHour, true),
+        listLessonsValidator,
         learnAndEarnController.listLessons
     );
 
@@ -165,7 +167,7 @@ export default (app: Router): void => {
      *     security:
      *     - BearerToken: []
      */
-    route.put('/lessons', authenticateToken, learnAndEarnValidator.answer, learnAndEarnController.answer);
+    route.put('/lessons', authenticateToken, answer, learnAndEarnController.answer);
 
     /**
      * @swagger
@@ -189,7 +191,7 @@ export default (app: Router): void => {
      *     security:
      *     - BearerToken: []
      */
-    route.post('/lessons', authenticateToken, learnAndEarnValidator.startLesson, learnAndEarnController.startLesson);
+    route.post('/lessons', authenticateToken, startLesson, learnAndEarnController.startLesson);
 
     /**
      * trigger update
diff --git a/packages/api/src/routes/v2/microcredit/list.ts b/packages/api/src/routes/v2/microcredit/list.ts
index 1f25df72c..6d22769e0 100644
--- a/packages/api/src/routes/v2/microcredit/list.ts
+++ b/packages/api/src/routes/v2/microcredit/list.ts
@@ -5,8 +5,10 @@ import { authenticateToken, onlyAuthorizedRoles, verifySignature } from '../../.
 import { cache } from '../../../middlewares/cache-redis';
 import { cacheIntervals } from '../../../utils/api';
 import {
+    getFormValidator,
     listApplicationsValidator,
     listBorrowersValidator,
+    listManagersByCountryValidator,
     queryGetBorrowerValidator,
     repaymentsHistoryValidator
 } from '../../../validators/microcredit';
@@ -287,7 +289,7 @@ export default (route: Router): void => {
      *     security:
      *     - BearerToken: []
      */
-    route.get('/form/:id', authenticateToken, controller.getUserForm);
+    route.get('/form/:id', authenticateToken, getFormValidator, controller.getUserForm);
 
     /**
      * @swagger
@@ -309,7 +311,12 @@ export default (route: Router): void => {
      *       "200":
      *         description: OK
      */
-    route.get('/managers/:country', cache(cacheIntervals.oneHour), controller.getLoanManagersByCountry);
+    route.get(
+        '/managers/:country',
+        cache(cacheIntervals.oneHour),
+        listManagersByCountryValidator,
+        controller.getLoanManagersByCountry
+    );
 
     /**
      * @swagger
diff --git a/packages/api/src/routes/v2/referrals/index.ts b/packages/api/src/routes/v2/referrals/index.ts
index 8960b1d3e..2bef7abb7 100644
--- a/packages/api/src/routes/v2/referrals/index.ts
+++ b/packages/api/src/routes/v2/referrals/index.ts
@@ -3,7 +3,7 @@ import { Router } from 'express';
 import { authenticateToken, verifyTypedSignature } from '~middlewares/index';
 import { cache } from '~middlewares/cache-redis';
 import { cacheIntervals } from '~utils/api';
-import { referralPostValidator } from '~validators/referral';
+import { getReferralCodeValidator, referralPostValidator } from '~validators/referral';
 import ReferralController from '~controllers/v2/referral';
 
 export default (app: Router): void => {
@@ -61,6 +61,7 @@ export default (app: Router): void => {
         authenticateToken,
         verifyTypedSignature,
         cache(cacheIntervals.fiveMinutes),
+        getReferralCodeValidator,
         controller.getByCampaign
     );
 
diff --git a/packages/api/src/routes/v2/story.ts b/packages/api/src/routes/v2/story.ts
index ed53d1bc4..eb454b64a 100644
--- a/packages/api/src/routes/v2/story.ts
+++ b/packages/api/src/routes/v2/story.ts
@@ -1,14 +1,13 @@
 import { Router } from 'express';
 
+import { add, addComment, getStoryCommentsValidator, getStoryValidator } from '../../validators/story';
 import { authenticateToken, optionalAuthentication } from '../../middlewares';
 import { cache } from '../../middlewares/cache-redis';
 import { cacheIntervals } from '../../utils/api';
 import StoryController from '../../controllers/v2/story';
-import StoryValidator from '../../validators/story';
 
 export default (app: Router): void => {
     const storyController = new StoryController();
-    const storyValidator = new StoryValidator();
     const route = Router();
     app.use('/stories', route);
 
@@ -68,7 +67,7 @@ export default (app: Router): void => {
      *     security:
      *     - BearerToken: []
      */
-    route.post('/', authenticateToken, storyValidator.add, storyController.add);
+    route.post('/', authenticateToken, add, storyController.add);
 
     /**
      * @swagger
@@ -136,7 +135,7 @@ export default (app: Router): void => {
      *     security:
      *     - BearerToken: []
      */
-    route.get('/:id', optionalAuthentication, storyController.getById);
+    route.get('/:id', optionalAuthentication, getStoryValidator, storyController.getById);
 
     /**
      * @swagger
@@ -289,7 +288,7 @@ export default (app: Router): void => {
      *     security:
      *     - BearerToken: []
      */
-    route.get('/:id/comments/:query?', storyController.getComments);
+    route.get('/:id/comments/:query?', getStoryCommentsValidator, storyController.getComments);
 
     /**
      * @swagger
@@ -321,7 +320,7 @@ export default (app: Router): void => {
      *     security:
      *     - BearerToken: []
      */
-    route.post('/:id/comments', authenticateToken, storyValidator.addComment, storyController.addComment);
+    route.post('/:id/comments', authenticateToken, addComment, storyController.addComment);
 
     /**
      * @swagger
diff --git a/packages/api/src/server.ts b/packages/api/src/server.ts
index bf1dbaf3c..6fe1f20d2 100644
--- a/packages/api/src/server.ts
+++ b/packages/api/src/server.ts
@@ -173,7 +173,9 @@ export default (app: express.Application): void => {
                     message: 'invalid payloads',
                     details: error.details.get('query')
                         ? error.details.get('query').details
-                        : error.details.get('body').details
+                        : error.details.get('params')
+                          ? error.details.get('params').details
+                          : error.details.get('body').details
                 }
             });
         }
diff --git a/packages/api/src/validators/community.ts b/packages/api/src/validators/community.ts
index b2cee1eb0..9237a9b18 100644
--- a/packages/api/src/validators/community.ts
+++ b/packages/api/src/validators/community.ts
@@ -2,6 +2,104 @@ import { Joi, celebrate } from 'celebrate';
 
 import { defaultSchema } from './defaultSchema';
 
+const getCommunitySchema = defaultSchema.object<{ id: number; query: any }>({
+    id: Joi.number().required(),
+    query: Joi.any() // validation on getCommunityQuerySchema
+});
+const getCommunityQuerySchema = defaultSchema.object<{
+    limit: number;
+    offset: number;
+    state: number;
+    search: string;
+    orderBy: string;
+}>({
+    limit: Joi.number().optional(),
+    offset: Joi.number().optional(),
+    state: Joi.number().optional().valid(0, 1),
+    search: Joi.string().optional(),
+    orderBy: Joi.string()
+        .optional()
+        .valid(
+            'state',
+            'state:asc',
+            'state:desc',
+            'added',
+            'added:asc',
+            'added:desc',
+            'removed',
+            'removed:asc',
+            'removed:desc',
+            'since',
+            'since:asc',
+            'since:desc',
+            'until',
+            'until:asc',
+            'until:desc'
+        )
+});
+
+const getBeneficiariesQuerySchema = defaultSchema.object<{
+    limit: number;
+    offset: number;
+    state: number;
+    search: string;
+    orderBy: string;
+    lastActivity_lt: number;
+}>({
+    limit: Joi.number().optional(),
+    offset: Joi.number().optional(),
+    state: Joi.number().optional().valid(0, 1, 2),
+    search: Joi.string().optional(),
+    orderBy: Joi.string()
+        .optional()
+        .valid(
+            'state',
+            'state:asc',
+            'state:desc',
+            'claimed',
+            'claimed:asc',
+            'claimed:desc',
+            'since',
+            'since:asc',
+            'since:desc'
+        ),
+    lastActivity_lt: Joi.number().optional()
+});
+
+const getCommunityByIDOrAddressQuerySchema = defaultSchema.object<{ state: string }>({
+    state: Joi.string().optional().valid('ubi', 'base')
+});
+
+const getCommunityByIDOrAddressSchema = defaultSchema.object<{ idOrAddress: number | string; query: any }>({
+    idOrAddress: Joi.alternatives(
+        Joi.number(),
+        Joi.string()
+            .messages({
+                startWith: 'An address should start with 0x'
+            })
+            .custom((value, helpers) => {
+                if (!value.startsWith('0x')) {
+                    return helpers.error('startWith');
+                }
+                return value;
+            })
+    ),
+    query: Joi.any() // validation on getCommunityByIDOrAddressQuerySchema
+});
+
+const getCommunityValidator = celebrate({
+    params: getCommunitySchema,
+    query: getCommunityQuerySchema
+});
+const getBeneficiariesValidator = celebrate({
+    params: getCommunitySchema,
+    query: getBeneficiariesQuerySchema
+});
+const getCommunityByIDOrAddressValidator = celebrate({
+    params: getCommunityByIDOrAddressSchema,
+    query: getCommunityByIDOrAddressQuerySchema
+});
+
 const create = celebrate({
     body: defaultSchema.object({
         requestByAddress: Joi.string().required(),
@@ -66,9 +164,12 @@ const review = celebrate({
     })
 });
 
-export default {
+export {
     create,
     edit,
     editSubmission,
-    review
+    review,
+    getCommunityValidator,
+    getCommunityByIDOrAddressValidator,
+    getBeneficiariesValidator
 };
diff --git a/packages/api/src/validators/learnAndEarn.ts b/packages/api/src/validators/learnAndEarn.ts
index bff1c7215..474eb0a6b 100644
--- a/packages/api/src/validators/learnAndEarn.ts
+++ b/packages/api/src/validators/learnAndEarn.ts
@@ -1,19 +1,23 @@
 import { Joi, celebrate } from 'celebrate';
 
+import { createValidator } from '../utils/queryValidator';
 import { defaultSchema } from './defaultSchema';
+
 import config from '~config/index';
 
+const validator = createValidator();
+
 // I wish this comes true https://github.com/hapijs/joi/issues/2864#issuecomment-1322736004
 
 // This should match Joi validations
-export type AnswerRequestType = {
+type AnswerRequestType = {
     lesson: string;
     answers: number[];
 };
-export type StartLessonRequestType = {
+type StartLessonRequestType = {
     lesson: string;
 };
-export type ListLevelsRequestType = {
+type ListLevelsRequestType = {
     status?: 'available' | 'started' | 'completed';
     category?: string;
     limit?: number;
@@ -21,55 +25,70 @@ export type ListLevelsRequestType = {
     language?: string;
     client?: number;
 };
-export type RegisterClaimRewardsRequestType = {
+type RegisterClaimRewardsRequestType = {
     transactionHash: string;
 };
 
-class LearnAndEarnValidator {
-    answer = celebrate({
-        body: defaultSchema.object({
-            answers: defaultSchema.array().items(Joi.number().required()).required(),
-            lesson: Joi.string().required()
-        })
-    });
+const listLessonsSchema = defaultSchema.object<{ id: number }>({
+    id: Joi.number().required()
+});
+
+const listLessonsValidator = validator.params(listLessonsSchema);
 
-    startLesson = celebrate({
-        body: defaultSchema.object({
-            lesson: Joi.string().required()
-        })
-    });
+const answer = celebrate({
+    body: defaultSchema.object({
+        answers: defaultSchema.array().items(Joi.number().required()).required(),
+        lesson: Joi.string().required()
+    })
+});
 
-    listLevels = celebrate({
-        query: {
-            status: Joi.string().optional().valid('available', 'started', 'completed'), // TODO: add .default('available'),
-            category: Joi.string().optional(),
-            limit: Joi.number().optional().default(config.defaultLimit),
-            offset: Joi.number().optional().default(config.defaultOffset),
-            language: Joi.string().optional(), // TODO: make required
-            client: Joi.number().optional().default(1)
-        }
-    });
+const startLesson = celebrate({
+    body: defaultSchema.object({
+        lesson: Joi.string().required()
+    })
+});
 
-    registerClaimRewards = celebrate({
-        body: defaultSchema.object({
-            transactionHash: Joi.string().required()
-        })
-    });
+const listLevels = celebrate({
+    query: {
+        status: Joi.string().optional().valid('available', 'started', 'completed'), // TODO: add .default('available'),
+        category: Joi.string().optional(),
+        limit: Joi.number().optional().default(config.defaultLimit),
+        offset: Joi.number().optional().default(config.defaultOffset),
+        language: Joi.string().optional(), // TODO: make required
+        client: Joi.number().optional().default(1)
+    }
+});
 
-    createLevel = celebrate({
-        body: defaultSchema.object({
-            rules: defaultSchema
-                .object({
-                    countries: defaultSchema.array().items(Joi.string().length(2).required()).optional(),
-                    roles: defaultSchema
-                        .array()
-                        .items(Joi.string().valid('manager', 'beneficiary', 'ambassador').required())
-                        .optional(),
-                    limitUsers: Joi.number().optional()
-                })
-                .optional()
-        })
-    });
-}
+const registerClaimRewards = celebrate({
+    body: defaultSchema.object({
+        transactionHash: Joi.string().required()
+    })
+});
 
-export default LearnAndEarnValidator;
+const createLevel = celebrate({
+    body: defaultSchema.object({
+        rules: defaultSchema
+            .object({
+                countries: defaultSchema.array().items(Joi.string().length(2).required()).optional(),
+                roles: defaultSchema
+                    .array()
+                    .items(Joi.string().valid('manager', 'beneficiary', 'ambassador').required())
+                    .optional(),
+                limitUsers: Joi.number().optional()
+            })
+            .optional()
+    })
+});
+
+export {
+    answer,
+    startLesson,
+    listLevels,
+    registerClaimRewards,
+    createLevel,
+    listLessonsValidator,
+    AnswerRequestType,
+    StartLessonRequestType,
+    ListLevelsRequestType,
+    RegisterClaimRewardsRequestType
+};
diff --git a/packages/api/src/validators/microcredit.ts b/packages/api/src/validators/microcredit.ts
index 3ac928ae0..0c170f492 100644
--- a/packages/api/src/validators/microcredit.ts
+++ b/packages/api/src/validators/microcredit.ts
@@ -96,6 +96,14 @@ const queryGetBorrowerSchema = defaultSchema.object<{ address: string; formId: n
     include: Joi.alternatives(Joi.string(), Joi.array<string[]>()).optional().default([])
 });
 
+const getFormSchema = defaultSchema.object<{ id: number }>({
+    id: Joi.number().required()
+});
+
+const listManagersByCountrySchema = defaultSchema.object<{ country: string }>({
+    country: Joi.string().length(2).required()
+});
+
 interface ListBorrowersRequestSchema extends ValidatedRequestSchema {
     [ContainerTypes.Query]: ListBorrowersType;
 }
@@ -145,6 +153,8 @@ type PutApplicationsRequestType = [
     }
 ];
 
+const getFormValidator = validator.params(getFormSchema);
+const listManagersByCountryValidator = validator.params(listManagersByCountrySchema);
 const listBorrowersValidator = validator.query(queryListBorrowersSchema);
 const listApplicationsValidator = validator.query(queryListApplicationsSchema);
 const repaymentsHistoryValidator = validator.query(queryRepaymentsHistorySchema);
@@ -198,6 +208,8 @@ const addNote = celebrate({
 });
 
 export {
+    getFormValidator,
+    listManagersByCountryValidator,
     listBorrowersValidator,
     listApplicationsValidator,
     preSignerUrlFromAWSValidator,
diff --git a/packages/api/src/validators/referral.ts b/packages/api/src/validators/referral.ts
index 8a5c3d0cf..aa3d3904d 100644
--- a/packages/api/src/validators/referral.ts
+++ b/packages/api/src/validators/referral.ts
@@ -1,13 +1,24 @@
 import { Joi, celebrate } from 'celebrate';
 
+import { createValidator } from '../utils/queryValidator';
 import { defaultSchema } from './defaultSchema';
 
-export type ReferralRequestType = {
+const validator = createValidator();
+
+type ReferralRequestType = {
     code: string;
 };
 
-export const referralPostValidator = celebrate({
+const getReferralCodeSchema = defaultSchema.object<{ cid: number }>({
+    cid: Joi.number().required()
+});
+
+const getReferralCodeValidator = validator.params(getReferralCodeSchema);
+
+const referralPostValidator = celebrate({
     body: defaultSchema.object<ReferralRequestType>({
         code: Joi.string().required()
     })
 });
+
+export { referralPostValidator, getReferralCodeValidator, ReferralRequestType };
diff --git a/packages/api/src/validators/story.ts b/packages/api/src/validators/story.ts
index b6adee639..72df72907 100644
--- a/packages/api/src/validators/story.ts
+++ b/packages/api/src/validators/story.ts
@@ -1,20 +1,37 @@
 import { Joi, celebrate } from 'celebrate';
 
+import { createValidator } from '../utils/queryValidator';
 import { defaultSchema } from './defaultSchema';
 
-class StoryValidator {
-    add = celebrate({
-        body: defaultSchema.object({
-            message: Joi.string().optional(),
-            storyMedia: Joi.array().items(Joi.string()).optional()
-        })
-    });
-
-    addComment = celebrate({
-        body: defaultSchema.object({
-            comment: Joi.string().required()
-        })
-    });
-}
-
-export default StoryValidator;
+const validator = createValidator();
+
+const getStorySchema = defaultSchema.object<{ id: number; query: any }>({
+    id: Joi.number().required(),
+    query: Joi.any() // validation on getStoryQuerySchema
+});
+
+const getStoryQuerySchema = defaultSchema.object<{ limit: number; offset: number }>({
+    limit: Joi.number().optional(),
+    offset: Joi.number().optional()
+});
+
+const getStoryValidator = validator.params(getStorySchema);
+const getStoryCommentsValidator = celebrate({
+    params: getStorySchema,
+    query: getStoryQuerySchema
+});
+
+const add = celebrate({
+    body: defaultSchema.object({
+        message: Joi.string().optional(),
+        storyMedia: Joi.array().items(Joi.string()).optional()
+    })
+});
+
+const addComment = celebrate({
+    body: defaultSchema.object({
+        comment: Joi.string().required()
+    })
+});
+
+export { getStoryValidator, getStoryCommentsValidator, add, addComment };