diff --git a/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/AsyncMemories.java b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/AsyncMemories.java
index 4245a40..bccf1ce 100644
--- a/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/AsyncMemories.java
+++ b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/AsyncMemories.java
@@ -51,6 +51,7 @@
 
 /** Async module of {@link Memories} */
 public final class AsyncMemories {
+  public final AsyncMemoryRevisions revisions;
 
   Memories memories;
   ApiClient apiClient;
@@ -58,6 +59,8 @@ public final class AsyncMemories {
   public AsyncMemories(ApiClient apiClient) {
     this.apiClient = apiClient;
     this.memories = new Memories(apiClient);
+
+    this.revisions = new AsyncMemoryRevisions(apiClient);
   }
 
   CompletableFuture<AgentEngineMemoryOperation> privateCreate(
diff --git a/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/AsyncMemoryRevisions.java b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/AsyncMemoryRevisions.java
new file mode 100644
index 0000000..f7c58e0
--- /dev/null
+++ b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/AsyncMemoryRevisions.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Auto-generated code. Do not edit.
+
+package com.google.cloud.vertexai.genai;
+
+import com.google.cloud.vertexai.genai.types.GetAgentEngineMemoryRevisionConfig;
+import com.google.cloud.vertexai.genai.types.ListAgentEngineMemoryRevisionsConfig;
+import com.google.cloud.vertexai.genai.types.ListAgentEngineMemoryRevisionsResponse;
+import com.google.cloud.vertexai.genai.types.MemoryRevision;
+import com.google.genai.ApiClient;
+import com.google.genai.ApiResponse;
+import com.google.genai.Common.BuiltRequest;
+import java.util.concurrent.CompletableFuture;
+
+/** Async module of {@link MemoryRevisions} */
+public final class AsyncMemoryRevisions {
+
+  MemoryRevisions memoryRevisions;
+  ApiClient apiClient;
+
+  public AsyncMemoryRevisions(ApiClient apiClient) {
+    this.apiClient = apiClient;
+    this.memoryRevisions = new MemoryRevisions(apiClient);
+  }
+
+  public CompletableFuture<MemoryRevision> get(
+      String name, GetAgentEngineMemoryRevisionConfig config) {
+
+    BuiltRequest builtRequest = memoryRevisions.buildRequestForGet(name, config);
+    return this.apiClient
+        .asyncRequest("get", builtRequest.path(), builtRequest.body(), builtRequest.httpOptions())
+        .thenApplyAsync(
+            response -> {
+              try (ApiResponse res = response) {
+                return memoryRevisions.processResponseForGet(res, config);
+              }
+            });
+  }
+
+  CompletableFuture<ListAgentEngineMemoryRevisionsResponse> privateList(
+      String name, ListAgentEngineMemoryRevisionsConfig config) {
+
+    BuiltRequest builtRequest = memoryRevisions.buildRequestForPrivateList(name, config);
+    return this.apiClient
+        .asyncRequest("get", builtRequest.path(), builtRequest.body(), builtRequest.httpOptions())
+        .thenApplyAsync(
+            response -> {
+              try (ApiResponse res = response) {
+                return memoryRevisions.processResponseForPrivateList(res, config);
+              }
+            });
+  }
+}
diff --git a/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/Memories.java b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/Memories.java
index 933f961..8f14892 100644
--- a/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/Memories.java
+++ b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/Memories.java
@@ -69,11 +69,13 @@
 import okhttp3.ResponseBody;
 
 public final class Memories {
+  public final MemoryRevisions revisions;
 
   final ApiClient apiClient;
 
   public Memories(ApiClient apiClient) {
     this.apiClient = apiClient;
+    this.revisions = new MemoryRevisions(apiClient);
   }
 
   @ExcludeFromGeneratedCoverageReport
diff --git a/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/MemoryRevisions.java b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/MemoryRevisions.java
new file mode 100644
index 0000000..53a43c7
--- /dev/null
+++ b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/MemoryRevisions.java
@@ -0,0 +1,257 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Auto-generated code. Do not edit.
+
+package com.google.cloud.vertexai.genai;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.google.cloud.vertexai.genai.types.GetAgentEngineMemoryRevisionConfig;
+import com.google.cloud.vertexai.genai.types.GetAgentEngineMemoryRevisionRequestParameters;
+import com.google.cloud.vertexai.genai.types.ListAgentEngineMemoryRevisionsConfig;
+import com.google.cloud.vertexai.genai.types.ListAgentEngineMemoryRevisionsRequestParameters;
+import com.google.cloud.vertexai.genai.types.ListAgentEngineMemoryRevisionsResponse;
+import com.google.cloud.vertexai.genai.types.MemoryRevision;
+import com.google.genai.ApiClient;
+import com.google.genai.ApiResponse;
+import com.google.genai.Common;
+import com.google.genai.Common.BuiltRequest;
+import com.google.genai.JsonSerializable;
+import com.google.genai.errors.GenAiIOException;
+import com.google.genai.types.HttpOptions;
+import java.io.IOException;
+import java.util.Optional;
+import okhttp3.ResponseBody;
+
+public final class MemoryRevisions {
+
+  final ApiClient apiClient;
+
+  public MemoryRevisions(ApiClient apiClient) {
+    this.apiClient = apiClient;
+  }
+
+  @ExcludeFromGeneratedCoverageReport
+  ObjectNode getAgentEngineMemoryRevisionRequestParametersToVertex(
+      JsonNode fromObject, ObjectNode parentObject) {
+    ObjectNode toObject = JsonSerializable.objectMapper().createObjectNode();
+    if (Common.getValueByPath(fromObject, new String[] {"name"}) != null) {
+      Common.setValueByPath(
+          toObject,
+          new String[] {"_url", "name"},
+          Common.getValueByPath(fromObject, new String[] {"name"}));
+    }
+
+    return toObject;
+  }
+
+  @ExcludeFromGeneratedCoverageReport
+  ObjectNode listAgentEngineMemoryRevisionsConfigToVertex(
+      JsonNode fromObject, ObjectNode parentObject) {
+    ObjectNode toObject = JsonSerializable.objectMapper().createObjectNode();
+
+    if (Common.getValueByPath(fromObject, new String[] {"pageSize"}) != null) {
+      Common.setValueByPath(
+          parentObject,
+          new String[] {"_query", "pageSize"},
+          Common.getValueByPath(fromObject, new String[] {"pageSize"}));
+    }
+
+    if (Common.getValueByPath(fromObject, new String[] {"pageToken"}) != null) {
+      Common.setValueByPath(
+          parentObject,
+          new String[] {"_query", "pageToken"},
+          Common.getValueByPath(fromObject, new String[] {"pageToken"}));
+    }
+
+    if (Common.getValueByPath(fromObject, new String[] {"filter"}) != null) {
+      Common.setValueByPath(
+          parentObject,
+          new String[] {"_query", "filter"},
+          Common.getValueByPath(fromObject, new String[] {"filter"}));
+    }
+
+    return toObject;
+  }
+
+  @ExcludeFromGeneratedCoverageReport
+  ObjectNode listAgentEngineMemoryRevisionsRequestParametersToVertex(
+      JsonNode fromObject, ObjectNode parentObject) {
+    ObjectNode toObject = JsonSerializable.objectMapper().createObjectNode();
+    if (Common.getValueByPath(fromObject, new String[] {"name"}) != null) {
+      Common.setValueByPath(
+          toObject,
+          new String[] {"_url", "name"},
+          Common.getValueByPath(fromObject, new String[] {"name"}));
+    }
+
+    if (Common.getValueByPath(fromObject, new String[] {"config"}) != null) {
+      JsonNode unused =
+          listAgentEngineMemoryRevisionsConfigToVertex(
+              JsonSerializable.toJsonNode(
+                  Common.getValueByPath(fromObject, new String[] {"config"})),
+              toObject);
+    }
+
+    return toObject;
+  }
+
+  /** A shared buildRequest method for both sync and async methods. */
+  BuiltRequest buildRequestForGet(String name, GetAgentEngineMemoryRevisionConfig config) {
+
+    GetAgentEngineMemoryRevisionRequestParameters.Builder parameterBuilder =
+        GetAgentEngineMemoryRevisionRequestParameters.builder();
+
+    if (!Common.isZero(name)) {
+      parameterBuilder.name(name);
+    }
+    if (!Common.isZero(config)) {
+      parameterBuilder.config(config);
+    }
+    JsonNode parameterNode = JsonSerializable.toJsonNode(parameterBuilder.build());
+
+    ObjectNode body;
+    String path;
+    if (this.apiClient.vertexAI()) {
+      body = getAgentEngineMemoryRevisionRequestParametersToVertex(parameterNode, null);
+      path = Common.formatMap("{name}", body.get("_url"));
+    } else {
+      throw new UnsupportedOperationException(
+          "This method is only supported in the Vertex AI client.");
+    }
+    body.remove("_url");
+
+    JsonNode queryParams = body.get("_query");
+    if (queryParams != null) {
+      body.remove("_query");
+      path = String.format("%s?%s", path, Common.urlEncode((ObjectNode) queryParams));
+    }
+
+    // TODO: Remove the hack that removes config.
+    Optional<HttpOptions> requestHttpOptions = Optional.empty();
+    if (config != null) {
+      requestHttpOptions = config.httpOptions();
+    }
+
+    return new BuiltRequest(path, JsonSerializable.toJsonString(body), requestHttpOptions);
+  }
+
+  /** A shared processResponse function for both sync and async methods. */
+  MemoryRevision processResponseForGet(
+      ApiResponse response, GetAgentEngineMemoryRevisionConfig config) {
+    ResponseBody responseBody = response.getBody();
+    String responseString;
+    try {
+      responseString = responseBody.string();
+    } catch (IOException e) {
+      throw new GenAiIOException("Failed to read HTTP response.", e);
+    }
+
+    JsonNode responseNode = JsonSerializable.stringToJsonNode(responseString);
+
+    if (!this.apiClient.vertexAI()) {
+      throw new UnsupportedOperationException(
+          "This method is only supported in the Vertex AI client.");
+    }
+
+    return JsonSerializable.fromJsonNode(responseNode, MemoryRevision.class);
+  }
+
+  public MemoryRevision get(String name, GetAgentEngineMemoryRevisionConfig config) {
+    BuiltRequest builtRequest = buildRequestForGet(name, config);
+
+    try (ApiResponse response =
+        this.apiClient.request(
+            "get", builtRequest.path(), builtRequest.body(), builtRequest.httpOptions())) {
+      return processResponseForGet(response, config);
+    }
+  }
+
+  /** A shared buildRequest method for both sync and async methods. */
+  BuiltRequest buildRequestForPrivateList(
+      String name, ListAgentEngineMemoryRevisionsConfig config) {
+
+    ListAgentEngineMemoryRevisionsRequestParameters.Builder parameterBuilder =
+        ListAgentEngineMemoryRevisionsRequestParameters.builder();
+
+    if (!Common.isZero(name)) {
+      parameterBuilder.name(name);
+    }
+    if (!Common.isZero(config)) {
+      parameterBuilder.config(config);
+    }
+    JsonNode parameterNode = JsonSerializable.toJsonNode(parameterBuilder.build());
+
+    ObjectNode body;
+    String path;
+    if (this.apiClient.vertexAI()) {
+      body = listAgentEngineMemoryRevisionsRequestParametersToVertex(parameterNode, null);
+      path = Common.formatMap("{name}/revisions", body.get("_url"));
+    } else {
+      throw new UnsupportedOperationException(
+          "This method is only supported in the Vertex AI client.");
+    }
+    body.remove("_url");
+
+    JsonNode queryParams = body.get("_query");
+    if (queryParams != null) {
+      body.remove("_query");
+      path = String.format("%s?%s", path, Common.urlEncode((ObjectNode) queryParams));
+    }
+
+    // TODO: Remove the hack that removes config.
+    Optional<HttpOptions> requestHttpOptions = Optional.empty();
+    if (config != null) {
+      requestHttpOptions = config.httpOptions();
+    }
+
+    return new BuiltRequest(path, JsonSerializable.toJsonString(body), requestHttpOptions);
+  }
+
+  /** A shared processResponse function for both sync and async methods. */
+  ListAgentEngineMemoryRevisionsResponse processResponseForPrivateList(
+      ApiResponse response, ListAgentEngineMemoryRevisionsConfig config) {
+    ResponseBody responseBody = response.getBody();
+    String responseString;
+    try {
+      responseString = responseBody.string();
+    } catch (IOException e) {
+      throw new GenAiIOException("Failed to read HTTP response.", e);
+    }
+
+    JsonNode responseNode = JsonSerializable.stringToJsonNode(responseString);
+
+    if (!this.apiClient.vertexAI()) {
+      throw new UnsupportedOperationException(
+          "This method is only supported in the Vertex AI client.");
+    }
+
+    return JsonSerializable.fromJsonNode(
+        responseNode, ListAgentEngineMemoryRevisionsResponse.class);
+  }
+
+  public ListAgentEngineMemoryRevisionsResponse privateList(
+      String name, ListAgentEngineMemoryRevisionsConfig config) {
+    BuiltRequest builtRequest = buildRequestForPrivateList(name, config);
+
+    try (ApiResponse response =
+        this.apiClient.request(
+            "get", builtRequest.path(), builtRequest.body(), builtRequest.httpOptions())) {
+      return processResponseForPrivateList(response, config);
+    }
+  }
+}
diff --git a/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/GetAgentEngineMemoryRevisionConfig.java b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/GetAgentEngineMemoryRevisionConfig.java
new file mode 100644
index 0000000..bc29604
--- /dev/null
+++ b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/GetAgentEngineMemoryRevisionConfig.java
@@ -0,0 +1,85 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Auto-generated code. Do not edit.
+
+package com.google.cloud.vertexai.genai.types;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.google.auto.value.AutoValue;
+import com.google.errorprone.annotations.CanIgnoreReturnValue;
+import com.google.genai.JsonSerializable;
+import com.google.genai.types.HttpOptions;
+import java.util.Optional;
+
+/** Config for getting an Agent Engine Memory Revision. */
+@AutoValue
+@JsonDeserialize(builder = GetAgentEngineMemoryRevisionConfig.Builder.class)
+public abstract class GetAgentEngineMemoryRevisionConfig extends JsonSerializable {
+  /** Used to override HTTP request options. */
+  @JsonProperty("httpOptions")
+  public abstract Optional<HttpOptions> httpOptions();
+
+  /** Instantiates a builder for GetAgentEngineMemoryRevisionConfig. */
+  @ExcludeFromGeneratedCoverageReport
+  public static Builder builder() {
+    return new AutoValue_GetAgentEngineMemoryRevisionConfig.Builder();
+  }
+
+  /** Creates a builder with the same values as this instance. */
+  public abstract Builder toBuilder();
+
+  /** Builder for GetAgentEngineMemoryRevisionConfig. */
+  @AutoValue.Builder
+  public abstract static class Builder {
+    /**
+     * For internal usage. Please use `GetAgentEngineMemoryRevisionConfig.builder()` for
+     * instantiation.
+     */
+    @JsonCreator
+    private static Builder create() {
+      return new AutoValue_GetAgentEngineMemoryRevisionConfig.Builder();
+    }
+
+    /**
+     * Setter for httpOptions.
+     *
+     * <p>httpOptions: Used to override HTTP request options.
+     */
+    @JsonProperty("httpOptions")
+    public abstract Builder httpOptions(HttpOptions httpOptions);
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder httpOptions(Optional<HttpOptions> httpOptions);
+
+    /** Clears the value of httpOptions field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearHttpOptions() {
+      return httpOptions(Optional.empty());
+    }
+
+    public abstract GetAgentEngineMemoryRevisionConfig build();
+  }
+
+  /** Deserializes a JSON string to a GetAgentEngineMemoryRevisionConfig object. */
+  @ExcludeFromGeneratedCoverageReport
+  public static GetAgentEngineMemoryRevisionConfig fromJson(String jsonString) {
+    return JsonSerializable.fromJsonString(jsonString, GetAgentEngineMemoryRevisionConfig.class);
+  }
+}
diff --git a/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/GetAgentEngineMemoryRevisionRequestParameters.java b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/GetAgentEngineMemoryRevisionRequestParameters.java
new file mode 100644
index 0000000..fe338dd
--- /dev/null
+++ b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/GetAgentEngineMemoryRevisionRequestParameters.java
@@ -0,0 +1,119 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Auto-generated code. Do not edit.
+
+package com.google.cloud.vertexai.genai.types;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.google.api.core.InternalApi;
+import com.google.auto.value.AutoValue;
+import com.google.errorprone.annotations.CanIgnoreReturnValue;
+import com.google.genai.JsonSerializable;
+import java.util.Optional;
+
+/** Parameters for getting an Agent Engine memory revision. */
+@AutoValue
+@InternalApi
+@JsonDeserialize(builder = GetAgentEngineMemoryRevisionRequestParameters.Builder.class)
+public abstract class GetAgentEngineMemoryRevisionRequestParameters extends JsonSerializable {
+  /** Name of the agent engine. */
+  @JsonProperty("name")
+  public abstract Optional<String> name();
+
+  /** */
+  @JsonProperty("config")
+  public abstract Optional<GetAgentEngineMemoryRevisionConfig> config();
+
+  /** Instantiates a builder for GetAgentEngineMemoryRevisionRequestParameters. */
+  @ExcludeFromGeneratedCoverageReport
+  public static Builder builder() {
+    return new AutoValue_GetAgentEngineMemoryRevisionRequestParameters.Builder();
+  }
+
+  /** Creates a builder with the same values as this instance. */
+  public abstract Builder toBuilder();
+
+  /** Builder for GetAgentEngineMemoryRevisionRequestParameters. */
+  @AutoValue.Builder
+  public abstract static class Builder {
+    /**
+     * For internal usage. Please use `GetAgentEngineMemoryRevisionRequestParameters.builder()` for
+     * instantiation.
+     */
+    @JsonCreator
+    private static Builder create() {
+      return new AutoValue_GetAgentEngineMemoryRevisionRequestParameters.Builder();
+    }
+
+    /**
+     * Setter for name.
+     *
+     * <p>name: Name of the agent engine.
+     */
+    @JsonProperty("name")
+    public abstract Builder name(String name);
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder name(Optional<String> name);
+
+    /** Clears the value of name field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearName() {
+      return name(Optional.empty());
+    }
+
+    /**
+     * Setter for config.
+     *
+     * <p>config:
+     */
+    @JsonProperty("config")
+    public abstract Builder config(GetAgentEngineMemoryRevisionConfig config);
+
+    /**
+     * Setter for config builder.
+     *
+     * <p>config:
+     */
+    @CanIgnoreReturnValue
+    public Builder config(GetAgentEngineMemoryRevisionConfig.Builder configBuilder) {
+      return config(configBuilder.build());
+    }
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder config(Optional<GetAgentEngineMemoryRevisionConfig> config);
+
+    /** Clears the value of config field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearConfig() {
+      return config(Optional.empty());
+    }
+
+    public abstract GetAgentEngineMemoryRevisionRequestParameters build();
+  }
+
+  /** Deserializes a JSON string to a GetAgentEngineMemoryRevisionRequestParameters object. */
+  @ExcludeFromGeneratedCoverageReport
+  public static GetAgentEngineMemoryRevisionRequestParameters fromJson(String jsonString) {
+    return JsonSerializable.fromJsonString(
+        jsonString, GetAgentEngineMemoryRevisionRequestParameters.class);
+  }
+}
diff --git a/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/IntermediateExtractedMemory.java b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/IntermediateExtractedMemory.java
new file mode 100644
index 0000000..c413cde
--- /dev/null
+++ b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/IntermediateExtractedMemory.java
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Auto-generated code. Do not edit.
+
+package com.google.cloud.vertexai.genai.types;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.google.auto.value.AutoValue;
+import com.google.errorprone.annotations.CanIgnoreReturnValue;
+import com.google.genai.JsonSerializable;
+import java.util.Optional;
+
+/** An extracted memory that is the intermediate result before consolidation. */
+@AutoValue
+@JsonDeserialize(builder = IntermediateExtractedMemory.Builder.class)
+public abstract class IntermediateExtractedMemory extends JsonSerializable {
+  /** Output only. The fact of the extracted memory. */
+  @JsonProperty("fact")
+  public abstract Optional<String> fact();
+
+  /** Instantiates a builder for IntermediateExtractedMemory. */
+  @ExcludeFromGeneratedCoverageReport
+  public static Builder builder() {
+    return new AutoValue_IntermediateExtractedMemory.Builder();
+  }
+
+  /** Creates a builder with the same values as this instance. */
+  public abstract Builder toBuilder();
+
+  /** Builder for IntermediateExtractedMemory. */
+  @AutoValue.Builder
+  public abstract static class Builder {
+    /** For internal usage. Please use `IntermediateExtractedMemory.builder()` for instantiation. */
+    @JsonCreator
+    private static Builder create() {
+      return new AutoValue_IntermediateExtractedMemory.Builder();
+    }
+
+    /**
+     * Setter for fact.
+     *
+     * <p>fact: Output only. The fact of the extracted memory.
+     */
+    @JsonProperty("fact")
+    public abstract Builder fact(String fact);
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder fact(Optional<String> fact);
+
+    /** Clears the value of fact field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearFact() {
+      return fact(Optional.empty());
+    }
+
+    public abstract IntermediateExtractedMemory build();
+  }
+
+  /** Deserializes a JSON string to a IntermediateExtractedMemory object. */
+  @ExcludeFromGeneratedCoverageReport
+  public static IntermediateExtractedMemory fromJson(String jsonString) {
+    return JsonSerializable.fromJsonString(jsonString, IntermediateExtractedMemory.class);
+  }
+}
diff --git a/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/ListAgentEngineMemoryRevisionsConfig.java b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/ListAgentEngineMemoryRevisionsConfig.java
new file mode 100644
index 0000000..2323be0
--- /dev/null
+++ b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/ListAgentEngineMemoryRevisionsConfig.java
@@ -0,0 +1,155 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Auto-generated code. Do not edit.
+
+package com.google.cloud.vertexai.genai.types;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.google.auto.value.AutoValue;
+import com.google.errorprone.annotations.CanIgnoreReturnValue;
+import com.google.genai.JsonSerializable;
+import com.google.genai.types.HttpOptions;
+import java.util.Optional;
+
+/** Config for listing Agent Engine memory revisions. */
+@AutoValue
+@JsonDeserialize(builder = ListAgentEngineMemoryRevisionsConfig.Builder.class)
+public abstract class ListAgentEngineMemoryRevisionsConfig extends JsonSerializable {
+  /** Used to override HTTP request options. */
+  @JsonProperty("httpOptions")
+  public abstract Optional<HttpOptions> httpOptions();
+
+  /** */
+  @JsonProperty("pageSize")
+  public abstract Optional<Integer> pageSize();
+
+  /** */
+  @JsonProperty("pageToken")
+  public abstract Optional<String> pageToken();
+
+  /**
+   * An expression for filtering the results of the request. For field names both snake_case and
+   * camelCase are supported.
+   */
+  @JsonProperty("filter")
+  public abstract Optional<String> filter();
+
+  /** Instantiates a builder for ListAgentEngineMemoryRevisionsConfig. */
+  @ExcludeFromGeneratedCoverageReport
+  public static Builder builder() {
+    return new AutoValue_ListAgentEngineMemoryRevisionsConfig.Builder();
+  }
+
+  /** Creates a builder with the same values as this instance. */
+  public abstract Builder toBuilder();
+
+  /** Builder for ListAgentEngineMemoryRevisionsConfig. */
+  @AutoValue.Builder
+  public abstract static class Builder {
+    /**
+     * For internal usage. Please use `ListAgentEngineMemoryRevisionsConfig.builder()` for
+     * instantiation.
+     */
+    @JsonCreator
+    private static Builder create() {
+      return new AutoValue_ListAgentEngineMemoryRevisionsConfig.Builder();
+    }
+
+    /**
+     * Setter for httpOptions.
+     *
+     * <p>httpOptions: Used to override HTTP request options.
+     */
+    @JsonProperty("httpOptions")
+    public abstract Builder httpOptions(HttpOptions httpOptions);
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder httpOptions(Optional<HttpOptions> httpOptions);
+
+    /** Clears the value of httpOptions field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearHttpOptions() {
+      return httpOptions(Optional.empty());
+    }
+
+    /**
+     * Setter for pageSize.
+     *
+     * <p>pageSize:
+     */
+    @JsonProperty("pageSize")
+    public abstract Builder pageSize(Integer pageSize);
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder pageSize(Optional<Integer> pageSize);
+
+    /** Clears the value of pageSize field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearPageSize() {
+      return pageSize(Optional.empty());
+    }
+
+    /**
+     * Setter for pageToken.
+     *
+     * <p>pageToken:
+     */
+    @JsonProperty("pageToken")
+    public abstract Builder pageToken(String pageToken);
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder pageToken(Optional<String> pageToken);
+
+    /** Clears the value of pageToken field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearPageToken() {
+      return pageToken(Optional.empty());
+    }
+
+    /**
+     * Setter for filter.
+     *
+     * <p>filter: An expression for filtering the results of the request. For field names both
+     * snake_case and camelCase are supported.
+     */
+    @JsonProperty("filter")
+    public abstract Builder filter(String filter);
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder filter(Optional<String> filter);
+
+    /** Clears the value of filter field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearFilter() {
+      return filter(Optional.empty());
+    }
+
+    public abstract ListAgentEngineMemoryRevisionsConfig build();
+  }
+
+  /** Deserializes a JSON string to a ListAgentEngineMemoryRevisionsConfig object. */
+  @ExcludeFromGeneratedCoverageReport
+  public static ListAgentEngineMemoryRevisionsConfig fromJson(String jsonString) {
+    return JsonSerializable.fromJsonString(jsonString, ListAgentEngineMemoryRevisionsConfig.class);
+  }
+}
diff --git a/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/ListAgentEngineMemoryRevisionsRequestParameters.java b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/ListAgentEngineMemoryRevisionsRequestParameters.java
new file mode 100644
index 0000000..19667b7
--- /dev/null
+++ b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/ListAgentEngineMemoryRevisionsRequestParameters.java
@@ -0,0 +1,119 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Auto-generated code. Do not edit.
+
+package com.google.cloud.vertexai.genai.types;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.google.api.core.InternalApi;
+import com.google.auto.value.AutoValue;
+import com.google.errorprone.annotations.CanIgnoreReturnValue;
+import com.google.genai.JsonSerializable;
+import java.util.Optional;
+
+/** Parameters for listing Agent Engine memory revisions. */
+@AutoValue
+@InternalApi
+@JsonDeserialize(builder = ListAgentEngineMemoryRevisionsRequestParameters.Builder.class)
+public abstract class ListAgentEngineMemoryRevisionsRequestParameters extends JsonSerializable {
+  /** Name of the Agent Engine memory */
+  @JsonProperty("name")
+  public abstract Optional<String> name();
+
+  /** */
+  @JsonProperty("config")
+  public abstract Optional<ListAgentEngineMemoryRevisionsConfig> config();
+
+  /** Instantiates a builder for ListAgentEngineMemoryRevisionsRequestParameters. */
+  @ExcludeFromGeneratedCoverageReport
+  public static Builder builder() {
+    return new AutoValue_ListAgentEngineMemoryRevisionsRequestParameters.Builder();
+  }
+
+  /** Creates a builder with the same values as this instance. */
+  public abstract Builder toBuilder();
+
+  /** Builder for ListAgentEngineMemoryRevisionsRequestParameters. */
+  @AutoValue.Builder
+  public abstract static class Builder {
+    /**
+     * For internal usage. Please use `ListAgentEngineMemoryRevisionsRequestParameters.builder()`
+     * for instantiation.
+     */
+    @JsonCreator
+    private static Builder create() {
+      return new AutoValue_ListAgentEngineMemoryRevisionsRequestParameters.Builder();
+    }
+
+    /**
+     * Setter for name.
+     *
+     * <p>name: Name of the Agent Engine memory
+     */
+    @JsonProperty("name")
+    public abstract Builder name(String name);
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder name(Optional<String> name);
+
+    /** Clears the value of name field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearName() {
+      return name(Optional.empty());
+    }
+
+    /**
+     * Setter for config.
+     *
+     * <p>config:
+     */
+    @JsonProperty("config")
+    public abstract Builder config(ListAgentEngineMemoryRevisionsConfig config);
+
+    /**
+     * Setter for config builder.
+     *
+     * <p>config:
+     */
+    @CanIgnoreReturnValue
+    public Builder config(ListAgentEngineMemoryRevisionsConfig.Builder configBuilder) {
+      return config(configBuilder.build());
+    }
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder config(Optional<ListAgentEngineMemoryRevisionsConfig> config);
+
+    /** Clears the value of config field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearConfig() {
+      return config(Optional.empty());
+    }
+
+    public abstract ListAgentEngineMemoryRevisionsRequestParameters build();
+  }
+
+  /** Deserializes a JSON string to a ListAgentEngineMemoryRevisionsRequestParameters object. */
+  @ExcludeFromGeneratedCoverageReport
+  public static ListAgentEngineMemoryRevisionsRequestParameters fromJson(String jsonString) {
+    return JsonSerializable.fromJsonString(
+        jsonString, ListAgentEngineMemoryRevisionsRequestParameters.class);
+  }
+}
diff --git a/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/ListAgentEngineMemoryRevisionsResponse.java b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/ListAgentEngineMemoryRevisionsResponse.java
new file mode 100644
index 0000000..0c5bc56
--- /dev/null
+++ b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/ListAgentEngineMemoryRevisionsResponse.java
@@ -0,0 +1,157 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Auto-generated code. Do not edit.
+
+package com.google.cloud.vertexai.genai.types;
+
+import static com.google.common.collect.ImmutableList.toImmutableList;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.google.auto.value.AutoValue;
+import com.google.errorprone.annotations.CanIgnoreReturnValue;
+import com.google.genai.JsonSerializable;
+import com.google.genai.types.HttpResponse;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Optional;
+
+/** Response for listing agent engine memory revisions. */
+@AutoValue
+@JsonDeserialize(builder = ListAgentEngineMemoryRevisionsResponse.Builder.class)
+public abstract class ListAgentEngineMemoryRevisionsResponse extends JsonSerializable {
+  /** Used to retain the full HTTP response. */
+  @JsonProperty("sdkHttpResponse")
+  public abstract Optional<HttpResponse> sdkHttpResponse();
+
+  /** */
+  @JsonProperty("nextPageToken")
+  public abstract Optional<String> nextPageToken();
+
+  /** List of memory revisions. */
+  @JsonProperty("memoryRevisions")
+  public abstract Optional<List<MemoryRevision>> memoryRevisions();
+
+  /** Instantiates a builder for ListAgentEngineMemoryRevisionsResponse. */
+  @ExcludeFromGeneratedCoverageReport
+  public static Builder builder() {
+    return new AutoValue_ListAgentEngineMemoryRevisionsResponse.Builder();
+  }
+
+  /** Creates a builder with the same values as this instance. */
+  public abstract Builder toBuilder();
+
+  /** Builder for ListAgentEngineMemoryRevisionsResponse. */
+  @AutoValue.Builder
+  public abstract static class Builder {
+    /**
+     * For internal usage. Please use `ListAgentEngineMemoryRevisionsResponse.builder()` for
+     * instantiation.
+     */
+    @JsonCreator
+    private static Builder create() {
+      return new AutoValue_ListAgentEngineMemoryRevisionsResponse.Builder();
+    }
+
+    /**
+     * Setter for sdkHttpResponse.
+     *
+     * <p>sdkHttpResponse: Used to retain the full HTTP response.
+     */
+    @JsonProperty("sdkHttpResponse")
+    public abstract Builder sdkHttpResponse(HttpResponse sdkHttpResponse);
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder sdkHttpResponse(Optional<HttpResponse> sdkHttpResponse);
+
+    /** Clears the value of sdkHttpResponse field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearSdkHttpResponse() {
+      return sdkHttpResponse(Optional.empty());
+    }
+
+    /**
+     * Setter for nextPageToken.
+     *
+     * <p>nextPageToken:
+     */
+    @JsonProperty("nextPageToken")
+    public abstract Builder nextPageToken(String nextPageToken);
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder nextPageToken(Optional<String> nextPageToken);
+
+    /** Clears the value of nextPageToken field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearNextPageToken() {
+      return nextPageToken(Optional.empty());
+    }
+
+    /**
+     * Setter for memoryRevisions.
+     *
+     * <p>memoryRevisions: List of memory revisions.
+     */
+    @JsonProperty("memoryRevisions")
+    public abstract Builder memoryRevisions(List<MemoryRevision> memoryRevisions);
+
+    /**
+     * Setter for memoryRevisions.
+     *
+     * <p>memoryRevisions: List of memory revisions.
+     */
+    @CanIgnoreReturnValue
+    public Builder memoryRevisions(MemoryRevision... memoryRevisions) {
+      return memoryRevisions(Arrays.asList(memoryRevisions));
+    }
+
+    /**
+     * Setter for memoryRevisions builder.
+     *
+     * <p>memoryRevisions: List of memory revisions.
+     */
+    @CanIgnoreReturnValue
+    public Builder memoryRevisions(MemoryRevision.Builder... memoryRevisionsBuilders) {
+      return memoryRevisions(
+          Arrays.asList(memoryRevisionsBuilders).stream()
+              .map(MemoryRevision.Builder::build)
+              .collect(toImmutableList()));
+    }
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder memoryRevisions(Optional<List<MemoryRevision>> memoryRevisions);
+
+    /** Clears the value of memoryRevisions field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearMemoryRevisions() {
+      return memoryRevisions(Optional.empty());
+    }
+
+    public abstract ListAgentEngineMemoryRevisionsResponse build();
+  }
+
+  /** Deserializes a JSON string to a ListAgentEngineMemoryRevisionsResponse object. */
+  @ExcludeFromGeneratedCoverageReport
+  public static ListAgentEngineMemoryRevisionsResponse fromJson(String jsonString) {
+    return JsonSerializable.fromJsonString(
+        jsonString, ListAgentEngineMemoryRevisionsResponse.class);
+  }
+}
diff --git a/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/MemoryRevision.java b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/MemoryRevision.java
new file mode 100644
index 0000000..7415660
--- /dev/null
+++ b/google-cloud-vertexai/src/main/java/com/google/cloud/vertexai/genai/types/MemoryRevision.java
@@ -0,0 +1,244 @@
+/*
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Auto-generated code. Do not edit.
+
+package com.google.cloud.vertexai.genai.types;
+
+import static com.google.common.collect.ImmutableList.toImmutableList;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.google.auto.value.AutoValue;
+import com.google.errorprone.annotations.CanIgnoreReturnValue;
+import com.google.genai.JsonSerializable;
+import java.time.Instant;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+
+/** A memory revision. */
+@AutoValue
+@JsonDeserialize(builder = MemoryRevision.Builder.class)
+public abstract class MemoryRevision extends JsonSerializable {
+  /** Output only. Timestamp when this Memory Revision was created. */
+  @JsonProperty("createTime")
+  public abstract Optional<Instant> createTime();
+
+  /** Output only. Timestamp of when this resource is considered expired. */
+  @JsonProperty("expireTime")
+  public abstract Optional<Instant> expireTime();
+
+  /**
+   * Output only. The extracted memories from the source content before consolidation when the
+   * memory was updated via GenerateMemories. This information was used to modify an existing Memory
+   * via Consolidation.
+   */
+  @JsonProperty("extractedMemories")
+  public abstract Optional<List<IntermediateExtractedMemory>> extractedMemories();
+
+  /**
+   * Output only. The fact of the Memory Revision. This corresponds to the `fact` field of the
+   * parent Memory at the time of revision creation.
+   */
+  @JsonProperty("fact")
+  public abstract Optional<String> fact();
+
+  /**
+   * Output only. The labels of the Memory Revision. These labels are applied to the MemoryRevision
+   * when it is created based on `GenerateMemoriesRequest.revision_labels`.
+   */
+  @JsonProperty("labels")
+  public abstract Optional<Map<String, String>> labels();
+
+  /**
+   * Identifier. The resource name of the Memory Revision. Format:
+   * `projects/{project}/locations/{location}/reasoningEngines/{reasoning_engine}/memories/{memory}/revisions/{memory_revision}`
+   */
+  @JsonProperty("name")
+  public abstract Optional<String> name();
+
+  /** Instantiates a builder for MemoryRevision. */
+  @ExcludeFromGeneratedCoverageReport
+  public static Builder builder() {
+    return new AutoValue_MemoryRevision.Builder();
+  }
+
+  /** Creates a builder with the same values as this instance. */
+  public abstract Builder toBuilder();
+
+  /** Builder for MemoryRevision. */
+  @AutoValue.Builder
+  public abstract static class Builder {
+    /** For internal usage. Please use `MemoryRevision.builder()` for instantiation. */
+    @JsonCreator
+    private static Builder create() {
+      return new AutoValue_MemoryRevision.Builder();
+    }
+
+    /**
+     * Setter for createTime.
+     *
+     * <p>createTime: Output only. Timestamp when this Memory Revision was created.
+     */
+    @JsonProperty("createTime")
+    public abstract Builder createTime(Instant createTime);
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder createTime(Optional<Instant> createTime);
+
+    /** Clears the value of createTime field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearCreateTime() {
+      return createTime(Optional.empty());
+    }
+
+    /**
+     * Setter for expireTime.
+     *
+     * <p>expireTime: Output only. Timestamp of when this resource is considered expired.
+     */
+    @JsonProperty("expireTime")
+    public abstract Builder expireTime(Instant expireTime);
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder expireTime(Optional<Instant> expireTime);
+
+    /** Clears the value of expireTime field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearExpireTime() {
+      return expireTime(Optional.empty());
+    }
+
+    /**
+     * Setter for extractedMemories.
+     *
+     * <p>extractedMemories: Output only. The extracted memories from the source content before
+     * consolidation when the memory was updated via GenerateMemories. This information was used to
+     * modify an existing Memory via Consolidation.
+     */
+    @JsonProperty("extractedMemories")
+    public abstract Builder extractedMemories(List<IntermediateExtractedMemory> extractedMemories);
+
+    /**
+     * Setter for extractedMemories.
+     *
+     * <p>extractedMemories: Output only. The extracted memories from the source content before
+     * consolidation when the memory was updated via GenerateMemories. This information was used to
+     * modify an existing Memory via Consolidation.
+     */
+    @CanIgnoreReturnValue
+    public Builder extractedMemories(IntermediateExtractedMemory... extractedMemories) {
+      return extractedMemories(Arrays.asList(extractedMemories));
+    }
+
+    /**
+     * Setter for extractedMemories builder.
+     *
+     * <p>extractedMemories: Output only. The extracted memories from the source content before
+     * consolidation when the memory was updated via GenerateMemories. This information was used to
+     * modify an existing Memory via Consolidation.
+     */
+    @CanIgnoreReturnValue
+    public Builder extractedMemories(
+        IntermediateExtractedMemory.Builder... extractedMemoriesBuilders) {
+      return extractedMemories(
+          Arrays.asList(extractedMemoriesBuilders).stream()
+              .map(IntermediateExtractedMemory.Builder::build)
+              .collect(toImmutableList()));
+    }
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder extractedMemories(
+        Optional<List<IntermediateExtractedMemory>> extractedMemories);
+
+    /** Clears the value of extractedMemories field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearExtractedMemories() {
+      return extractedMemories(Optional.empty());
+    }
+
+    /**
+     * Setter for fact.
+     *
+     * <p>fact: Output only. The fact of the Memory Revision. This corresponds to the `fact` field
+     * of the parent Memory at the time of revision creation.
+     */
+    @JsonProperty("fact")
+    public abstract Builder fact(String fact);
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder fact(Optional<String> fact);
+
+    /** Clears the value of fact field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearFact() {
+      return fact(Optional.empty());
+    }
+
+    /**
+     * Setter for labels.
+     *
+     * <p>labels: Output only. The labels of the Memory Revision. These labels are applied to the
+     * MemoryRevision when it is created based on `GenerateMemoriesRequest.revision_labels`.
+     */
+    @JsonProperty("labels")
+    public abstract Builder labels(Map<String, String> labels);
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder labels(Optional<Map<String, String>> labels);
+
+    /** Clears the value of labels field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearLabels() {
+      return labels(Optional.empty());
+    }
+
+    /**
+     * Setter for name.
+     *
+     * <p>name: Identifier. The resource name of the Memory Revision. Format:
+     * `projects/{project}/locations/{location}/reasoningEngines/{reasoning_engine}/memories/{memory}/revisions/{memory_revision}`
+     */
+    @JsonProperty("name")
+    public abstract Builder name(String name);
+
+    @ExcludeFromGeneratedCoverageReport
+    abstract Builder name(Optional<String> name);
+
+    /** Clears the value of name field. */
+    @ExcludeFromGeneratedCoverageReport
+    @CanIgnoreReturnValue
+    public Builder clearName() {
+      return name(Optional.empty());
+    }
+
+    public abstract MemoryRevision build();
+  }
+
+  /** Deserializes a JSON string to a MemoryRevision object. */
+  @ExcludeFromGeneratedCoverageReport
+  public static MemoryRevision fromJson(String jsonString) {
+    return JsonSerializable.fromJsonString(jsonString, MemoryRevision.class);
+  }
+}
diff --git a/google-cloud-vertexai/src/test/java/com/google/cloud/vertexai/genai/AgentEnginesMemoriesRevisionsTest.java b/google-cloud-vertexai/src/test/java/com/google/cloud/vertexai/genai/AgentEnginesMemoriesRevisionsTest.java
new file mode 100644
index 0000000..85ee011
--- /dev/null
+++ b/google-cloud-vertexai/src/test/java/com/google/cloud/vertexai/genai/AgentEnginesMemoriesRevisionsTest.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2026 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.cloud.vertexai.genai;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import com.google.cloud.vertexai.genai.types.ListAgentEngineMemoryRevisionsResponse;
+import com.google.cloud.vertexai.genai.types.MemoryRevision;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.EnabledIfEnvironmentVariable;
+import org.junit.jupiter.api.extension.ExtendWith;
+
+@EnabledIfEnvironmentVariable(
+    named = "GOOGLE_GENAI_REPLAYS_DIRECTORY",
+    matches = ".*genai/replays.*")
+@ExtendWith(EnvironmentVariablesMockingExtension.class)
+public class AgentEnginesMemoriesRevisionsTest {
+
+  @Test
+  public void testPrivateGetAgentEngineMemoryRevision() throws Exception {
+    Client client =
+        TestUtils.createClient(
+            true, "ae_memory_revisions_get/test_get_memory_revisions.vertex.json");
+
+    String name =
+        "projects/964831358985/locations/us-central1/reasoningEngines/2886612747586371584/memories/3858070028511346688/revisions/516064922187071488";
+
+    MemoryRevision revision = client.agentEngines.memories.revisions.get(name, null);
+
+    assertEquals(revision.name().get(), name);
+  }
+
+  @Test
+  public void testPrivateListAgentEngineMemoryRevisions() throws Exception {
+    Client client =
+        TestUtils.createClient(
+            true,
+            "ae_memory_revisions_private_list/test_private_list_memory_revisions.vertex.json");
+
+    String name =
+        "projects/964831358985/locations/us-central1/reasoningEngines/2886612747586371584/memories/3858070028511346688";
+
+    ListAgentEngineMemoryRevisionsResponse response =
+        client.agentEngines.memories.revisions.privateList(name, null);
+
+    assertEquals(
+        response.memoryRevisions().get().get(0).name().get(),
+        name + "/revisions/516064922187071488");
+  }
+}