diff --git a/lesson_23/api/java/api_app/src/main/java/com/codedifferently/lesson23/config/AppConfig.java b/lesson_23/api/java/api_app/src/main/java/com/codedifferently/lesson23/config/AppConfig.java
new file mode 100644
index 000000000..0417708a0
--- /dev/null
+++ b/lesson_23/api/java/api_app/src/main/java/com/codedifferently/lesson23/config/AppConfig.java
@@ -0,0 +1,14 @@
+package com.codedifferently.lesson23.config;
+
+import com.codedifferently.lesson23.library.Librarian;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class AppConfig {
+
+  @Bean
+  public Librarian librarian() {
+    return new Librarian("System", "system@library.local");
+  }
+}
diff --git a/lesson_23/api/java/api_app/src/main/java/com/codedifferently/lesson23/web/AddMediaItemRequest.java b/lesson_23/api/java/api_app/src/main/java/com/codedifferently/lesson23/web/AddMediaItemRequest.java
new file mode 100644
index 000000000..e3a206829
--- /dev/null
+++ b/lesson_23/api/java/api_app/src/main/java/com/codedifferently/lesson23/web/AddMediaItemRequest.java
@@ -0,0 +1,35 @@
+package com.codedifferently.lesson23.web;
+
+import com.codedifferently.lesson23.library.Book;
+import com.codedifferently.lesson23.library.MediaItem;
+import jakarta.validation.constraints.NotNull;
+import java.util.List;
+import java.util.UUID;
+import lombok.Builder;
+import lombok.Value;
+
+@Value
+@Builder
+public class AddMediaItemRequest {
+  @NotNull Item item;
+
+  @Value
+  @Builder
+  public static class Item {
+    String id;
+    String type;
+    String title;
+    String isbn;
+    List<String> authors;
+    Integer pages;
+
+    public MediaItem toDomain() {
+      int p = pages == null ? 0 : pages;
+      return new Book(UUID.fromString(id), title, isbn, authors, p);
+    }
+  }
+
+  public Item getItem() {
+    return item;
+  }
+}
diff --git a/lesson_23/api/java/api_app/src/main/java/com/codedifferently/lesson23/web/MediaItemsController.java b/lesson_23/api/java/api_app/src/main/java/com/codedifferently/lesson23/web/MediaItemsController.java
index 7efa0b2f8..1ae3d8a29 100644
--- a/lesson_23/api/java/api_app/src/main/java/com/codedifferently/lesson23/web/MediaItemsController.java
+++ b/lesson_23/api/java/api_app/src/main/java/com/codedifferently/lesson23/web/MediaItemsController.java
@@ -4,24 +4,32 @@
 import com.codedifferently.lesson23.library.Library;
 import com.codedifferently.lesson23.library.MediaItem;
 import com.codedifferently.lesson23.library.search.SearchCriteria;
+import jakarta.validation.Valid;
 import java.io.IOException;
+import java.util.Collections;
 import java.util.List;
+import java.util.Map;
 import java.util.Set;
+import java.util.UUID;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.CrossOrigin;
+import org.springframework.web.bind.annotation.DeleteMapping;
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RestController;
 
 @RestController
 @CrossOrigin
 public class MediaItemsController {
+  private final Librarian librarian;
 
   private final Library library;
-  private final Librarian librarian;
 
-  public MediaItemsController(Library library) throws IOException {
+  public MediaItemsController(Library library, Librarian librarian) throws IOException {
+    this.librarian = librarian;
     this.library = library;
-    this.librarian = library.getLibrarians().stream().findFirst().orElseThrow();
   }
 
   @GetMapping("/items")
@@ -31,4 +39,34 @@ public ResponseEntity<GetMediaItemsResponse> getItems() {
     var response = GetMediaItemsResponse.builder().items(responseItems).build();
     return ResponseEntity.ok(response);
   }
+
+  @GetMapping("/items/{id}")
+  public ResponseEntity<Map<String, MediaItemResponse>> getItem(@PathVariable String id) {
+    Set<MediaItem> items = library.search(SearchCriteria.builder().id(id).build());
+    if (items.isEmpty()) {
+      return ResponseEntity.notFound().build();
+    }
+    MediaItem item = items.iterator().next();
+    var body = Collections.singletonMap("item", MediaItemResponse.from(item));
+    return ResponseEntity.ok(body);
+  }
+
+  @PostMapping("/items")
+  public ResponseEntity<Map<String, MediaItemResponse>> addItem(
+      @Valid @RequestBody AddMediaItemRequest request) {
+    MediaItem item = request.getItem().toDomain();
+    library.addMediaItem(item, librarian);
+    var body = Collections.singletonMap("item", MediaItemResponse.from(item));
+    return ResponseEntity.ok(body);
+  }
+
+  @DeleteMapping("/items/{id}")
+  public ResponseEntity<Void> deleteItem(@PathVariable String id) {
+    Set<MediaItem> items = library.search(SearchCriteria.builder().id(id).build());
+    if (items.isEmpty()) {
+      return ResponseEntity.notFound().build();
+    }
+    library.removeMediaItem(UUID.fromString(id), librarian);
+    return ResponseEntity.noContent().build();
+  }
 }