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Issue: junit-team#2816

junit-jupiter-api/src/main/java/org/junit/jupiter/api/extension/ExtensionContext.java

@@ -418,6 +418,28 @@ default void publishReportEntry(String value) {
 	 */
 	Store getStore(Namespace namespace);
 
+	/**
+	 * Returns the store for session-level data.
+	 *
+	 * <p>This store is used to store data that is scoped to the session level.
+	 * The data stored in this store will be available throughout the entire session.
+	 *
+	 * @return the store for session-level data
+	 * @since 5.13
+	 */
+	Store getSessionLevelStore();
+
+	/**
+	 * Returns the store for request-level data.
+	 *
+	 * <p>This store is used to store data that is scoped to the request level.
+	 * The data stored in this store will be available only for the duration of the current request.
+	 *
+	 * @return the store for request-level data
+	 * @since 5.13
+	 */
+	Store getRequestLevelStore();
+
 	/**
 	 * Get the {@link ExecutionMode} associated with the current test or container.
 	 *

junit-jupiter-engine/src/main/java/org/junit/jupiter/engine/descriptor/AbstractExtensionContext.java

@@ -192,6 +192,16 @@ public Store getStore(Namespace namespace) {
 		return new NamespaceAwareStore(this.valuesStore, namespace);
 	}
 
+	@Override
+	public Store getSessionLevelStore() {
+		return getStore(Namespace.create("session"));
+	}
+
+	@Override
+	public Store getRequestLevelStore() {
+		return getStore(Namespace.create("request"));
+	}
+
 	@Override
 	public Set<String> getTags() {
 		// return modifiable copy

junit-platform-engine/src/main/java/org/junit/platform/engine/Namespace.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2024 the original author or authors.
+ * Copyright 2015-2025 the original author or authors.
  *
  * All rights reserved. This program and the accompanying materials are
  * made available under the terms of the Eclipse Public License v2.0 which

junit-platform-engine/src/main/java/org/junit/platform/engine/support/store/NamespacedHierarchicalStore.java

@@ -17,6 +17,7 @@
 
 import java.util.Comparator;
 import java.util.Objects;
+import java.util.Optional;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
 import java.util.concurrent.atomic.AtomicInteger;
@@ -85,6 +86,18 @@ public NamespacedHierarchicalStore<N> newChild() {
 		return new NamespacedHierarchicalStore<>(this, this.closeAction);
 	}
 
+	/**
+	 * Returns the parent store of this {@code NamespacedHierarchicalStore}.
+	 *
+	 * <p>If this store does not have a parent, an empty {@code Optional} is returned.
+	 *
+	 * @return an {@code Optional} containing the parent store, or an empty {@code Optional} if there is no parent
+	 * @since 5.13
+	 */
+	public Optional<NamespacedHierarchicalStore<N>> getParent() {
+		return Optional.ofNullable(this.parentStore);
+	}
+
 	/**
 	 * Determine if this store has been {@linkplain #close() closed}.
 	 *