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diff --git a/codigos/backend/docs/diagram.jpg b/codigos/backend/docs/diagram.jpg
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diff --git a/codigos/backend/docs/diagram.jpg.bak b/codigos/backend/docs/diagram.jpg.bak
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diff --git a/codigos/backend/src/main/java/com/srh/api/controller/ItemRatingController.java b/codigos/backend/src/main/java/com/srh/api/controller/ItemRatingController.java
index 67301e1..c9361ff 100644
--- a/codigos/backend/src/main/java/com/srh/api/controller/ItemRatingController.java
+++ b/codigos/backend/src/main/java/com/srh/api/controller/ItemRatingController.java
@@ -73,4 +73,17 @@ public class ItemRatingController {
         itemRatingService.delete(id);
         return ResponseEntity.noContent().build();
     }
+
+    @GetMapping("/itens/{itemId}")
+    public ResponseEntity<Page<ItemRatingDto>> listItensRatingsByItem(@PathVariable Integer itemId, Pageable pageInfo) {
+        Page<ItemRating> itensRatings = itemRatingService.listItensRatingsByItem(itemId, pageInfo);
+        return ResponseEntity.ok(ItemRatingDto.convert(itensRatings));
+    }
+
+    @GetMapping("/tags/{tagId}")
+    public ResponseEntity<Page<ItemRatingDto>> listItensRatingsByTag(@PathVariable Integer tagId,
+                                                                     Pageable pageInfo) {
+        Page<ItemRating> itensRatings = itemRatingService.listItensRAtingsByTag(tagId, pageInfo);
+        return ResponseEntity.ok(ItemRatingDto.convert(itensRatings));
+    }
 }
diff --git a/codigos/backend/src/main/java/com/srh/api/controller/RecommendationController.java b/codigos/backend/src/main/java/com/srh/api/controller/RecommendationController.java
index e4a3ac2..ff3e419 100644
--- a/codigos/backend/src/main/java/com/srh/api/controller/RecommendationController.java
+++ b/codigos/backend/src/main/java/com/srh/api/controller/RecommendationController.java
@@ -70,4 +70,28 @@ public class RecommendationController {
         return ResponseEntity.noContent().build();
     }
 
+    @GetMapping("/performances/{algorithmId}")
+    public ResponseEntity<Page<RecommendationDto>> listRecommendationsPerformance(
+            @PathVariable Integer algorithmId, Pageable pageInfo) {
+        Page<Recommendation> recommendations = recommendationService.listRecommendationsByAlgorithm(
+                algorithmId, pageInfo
+        );
+        return ResponseEntity.ok(RecommendationDto.convert(recommendations));
+    }
+
+    @GetMapping("/matrices/{matrixId}")
+    public ResponseEntity<Page<RecommendationDto>> listRecommendationsMatrix(
+            @PathVariable Integer matrixId, Pageable pageInfo) {
+        Page<Recommendation> recommendations = recommendationService.listRecommendationsByMatrixId(
+                matrixId, pageInfo);
+        return ResponseEntity.ok(RecommendationDto.convert(recommendations));
+    }
+
+    @GetMapping("/tags/{tagId}")
+    public ResponseEntity<Page<RecommendationDto>> listRecommendationsByTag(
+            @PathVariable Integer tagId, Pageable pageInfo
+    ) {
+        Page<Recommendation> recommendations = recommendationService.listRecommendationsByTag(tagId, pageInfo);
+        return ResponseEntity.ok(RecommendationDto.convert(recommendations));
+    }
 }
diff --git a/codigos/backend/src/main/java/com/srh/api/repository/ItemRatingRepository.java b/codigos/backend/src/main/java/com/srh/api/repository/ItemRatingRepository.java
index 4567a28..6bf0d62 100644
--- a/codigos/backend/src/main/java/com/srh/api/repository/ItemRatingRepository.java
+++ b/codigos/backend/src/main/java/com/srh/api/repository/ItemRatingRepository.java
@@ -1,7 +1,11 @@
 package com.srh.api.repository;
 
+import com.srh.api.model.Item;
 import com.srh.api.model.ItemRating;
 import org.springframework.data.repository.PagingAndSortingRepository;
 
+import java.util.List;
+
 public interface ItemRatingRepository extends PagingAndSortingRepository<ItemRating, Integer> {
+    List<ItemRating> findByItem(Item item);
 }
diff --git a/codigos/backend/src/main/java/com/srh/api/repository/ItemRepository.java b/codigos/backend/src/main/java/com/srh/api/repository/ItemRepository.java
index 9e87c6c..345333d 100644
--- a/codigos/backend/src/main/java/com/srh/api/repository/ItemRepository.java
+++ b/codigos/backend/src/main/java/com/srh/api/repository/ItemRepository.java
@@ -2,10 +2,12 @@ package com.srh.api.repository;
 
 import com.srh.api.model.Item;
 import com.srh.api.model.Project;
+import com.srh.api.model.Tag;
 import org.springframework.data.repository.PagingAndSortingRepository;
 
 import java.util.List;
 
 public interface ItemRepository extends PagingAndSortingRepository<Item, Integer> {
     List<Item> findByProject(Project project);
+    List<Item> findByTags(Tag tag);
 }
diff --git a/codigos/backend/src/main/java/com/srh/api/repository/RecommendationRepository.java b/codigos/backend/src/main/java/com/srh/api/repository/RecommendationRepository.java
index cf20c07..8ad6d9e 100644
--- a/codigos/backend/src/main/java/com/srh/api/repository/RecommendationRepository.java
+++ b/codigos/backend/src/main/java/com/srh/api/repository/RecommendationRepository.java
@@ -1,7 +1,14 @@
 package com.srh.api.repository;
 
+import com.srh.api.model.Algorithm;
 import com.srh.api.model.Recommendation;
+import org.springframework.data.domain.Page;
 import org.springframework.data.repository.PagingAndSortingRepository;
 
+import java.util.List;
+
 public interface RecommendationRepository extends PagingAndSortingRepository<Recommendation, Integer> {
+    List<Recommendation> findByAlgorithm(Algorithm algorithm);
+    List<Recommendation> findByMatrixId(Integer matrixId);
+    List<Recommendation> findByItem(Integer itemId);
 }
diff --git a/codigos/backend/src/main/java/com/srh/api/service/ItemRatingService.java b/codigos/backend/src/main/java/com/srh/api/service/ItemRatingService.java
index 1eb1b94..9f61283 100644
--- a/codigos/backend/src/main/java/com/srh/api/service/ItemRatingService.java
+++ b/codigos/backend/src/main/java/com/srh/api/service/ItemRatingService.java
@@ -3,7 +3,10 @@ package com.srh.api.service;
 import com.srh.api.model.Item;
 import com.srh.api.model.ItemRating;
 import com.srh.api.model.Evaluator;
+import com.srh.api.model.Tag;
 import com.srh.api.repository.ItemRatingRepository;
+import com.srh.api.repository.ItemRepository;
+import com.srh.api.utils.PageUtil;
 import lombok.Setter;
 import org.hibernate.ObjectNotFoundException;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -11,6 +14,8 @@ import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Optional;
 
 @Service
@@ -19,11 +24,17 @@ public class ItemRatingService {
     private ItemRatingRepository itemRatingRepository;
 
     @Autowired
+    private ItemRepository itemRepository;
+
+    @Autowired
     private EvaluatorService evaluatorService;
 
     @Autowired
     private ItemService itemService;
 
+    @Autowired
+    private TagService tagService;
+
     @Setter
     private String authorizationHeaderValue;
 
@@ -62,4 +73,24 @@ public class ItemRatingService {
         find(id);
         itemRatingRepository.deleteById(id);
     }
+
+    public Page<ItemRating> listItensRatingsByItem(Integer itemId, Pageable pageInfo) {
+        Item item = itemService.find(itemId);
+        List<ItemRating> itensRatings = itemRatingRepository.findByItem(item);
+        PageUtil<ItemRating> pageUtil = new PageUtil<>(pageInfo, itensRatings);
+        return pageUtil.getPage();
+    }
+
+    public Page<ItemRating> listItensRAtingsByTag(Integer tagId, Pageable pageInfo) {
+        Tag tag = tagService.find(tagId);
+        List<Item> itensWithTag = itemRepository.findByTags(tag);
+        List<ItemRating> itensRatings = new ArrayList<>();
+
+        for (Item item: itensWithTag) {
+            itensRatings.addAll(item.getItemRatings());
+        }
+
+        PageUtil<ItemRating> pageUtil = new PageUtil<>(pageInfo, itensRatings);
+        return pageUtil.getPage();
+    }
 }
diff --git a/codigos/backend/src/main/java/com/srh/api/service/RecommendationService.java b/codigos/backend/src/main/java/com/srh/api/service/RecommendationService.java
index b79c321..dd73151 100644
--- a/codigos/backend/src/main/java/com/srh/api/service/RecommendationService.java
+++ b/codigos/backend/src/main/java/com/srh/api/service/RecommendationService.java
@@ -4,9 +4,10 @@ import com.srh.api.algorithms.AlgorithmCalc;
 import com.srh.api.algorithms.AlgorithmStrategy;
 import com.srh.api.algorithms.structure.RecommendationsByUser;
 import com.srh.api.dto.resource.RecommendationForm;
-import com.srh.api.model.Evaluator;
-import com.srh.api.model.Recommendation;
+import com.srh.api.model.*;
+import com.srh.api.repository.ItemRepository;
 import com.srh.api.repository.RecommendationRepository;
+import com.srh.api.utils.PageUtil;
 import org.hibernate.ObjectNotFoundException;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.Page;
@@ -22,6 +23,15 @@ public class RecommendationService {
     @Autowired
     private RecommendationRepository recommendationRepository;
 
+    @Autowired
+    private ItemRepository itemRepository;
+
+    @Autowired
+    private TagService tagService;
+
+    @Autowired
+    private AlgorithmService algorithmService;
+
     public Recommendation find(Integer id) {
         Optional<Recommendation> recommendation = recommendationRepository.findById(id);
 
@@ -53,4 +63,30 @@ public class RecommendationService {
         AlgorithmCalc algorithm = AlgorithmStrategy.findInstance(recommendationInfo.getAlgorithmId());
         return algorithm.calc(recommendationInfo);
     }
+
+    public Page<Recommendation> listRecommendationsByAlgorithm(Integer algorithmId, Pageable pageInfo) {
+        Algorithm algorithm = algorithmService.find(algorithmId);
+        List<Recommendation> recommendations = recommendationRepository.findByAlgorithm(algorithm);
+        PageUtil<Recommendation> pageUtil = new PageUtil<>(pageInfo, recommendations);
+        return pageUtil.getPage();
+    }
+
+    public Page<Recommendation> listRecommendationsByMatrixId(Integer matrixId, Pageable pageInfo) {
+        List<Recommendation> recommendations = recommendationRepository.findByMatrixId(matrixId);
+        PageUtil<Recommendation> pageUtil = new PageUtil<>(pageInfo, recommendations);
+        return pageUtil.getPage();
+    }
+
+    public Page<Recommendation> listRecommendationsByTag(Integer tagId, Pageable pageInfo) {
+        Tag tag = tagService.find(tagId);
+        List<Item> itens = itemRepository.findByTags(tag);
+        List<Recommendation> recommendations = new ArrayList<>();
+
+        for (Item item : itens) {
+            recommendations.addAll(item.getRecommendations());
+        }
+
+        PageUtil<Recommendation> pageUtil = new PageUtil<>(pageInfo, recommendations);
+        return pageUtil.getPage();
+    }
 }
--
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