@@ -296,34 +296,34 @@ class SafetyPolicy(_common.CaseInSensitiveEnum):
   """SafetyPolicy"""
 
   SAFETY_POLICY_UNSPECIFIED = 'SAFETY_POLICY_UNSPECIFIED'
-  """Unspecified safety policy. This value should not be used."""
+  """The safety policy is unspecified."""
   FINANCIAL_TRANSACTIONS = 'FINANCIAL_TRANSACTIONS'
-  """Financial transactions safety policy."""
+  """Policy that restricts financial transactions."""
   SENSITIVE_DATA_MODIFICATION = 'SENSITIVE_DATA_MODIFICATION'
-  """Sensitive data modification safety policy."""
+  """Policy that restricts modification of sensitive data."""
   COMMUNICATION_TOOL = 'COMMUNICATION_TOOL'
-  """Communication tool safety policy."""
+  """Policy that restricts the use of communication tools."""
   ACCOUNT_CREATION = 'ACCOUNT_CREATION'
-  """Account creation safety policy."""
+  """Policy that restricts the creation of accounts."""
   DATA_MODIFICATION = 'DATA_MODIFICATION'
-  """Data modification safety policy."""
+  """Policy that restricts general data modification."""
   USER_CONSENT_MANAGEMENT = 'USER_CONSENT_MANAGEMENT'
-  """User consent management safety policy."""
+  """Policy that restricts user consent management."""
   LEGAL_TERMS_AND_AGREEMENTS = 'LEGAL_TERMS_AND_AGREEMENTS'
-  """Legal terms and agreements safety policy."""
+  """Policy that restricts interaction with legal terms and agreements."""
 
 
 class Environment(_common.CaseInSensitiveEnum):
-  """The environment being operated."""
+  """The target environment where the computer use tool operates."""
 
   ENVIRONMENT_UNSPECIFIED = 'ENVIRONMENT_UNSPECIFIED'
-  """Defaults to browser."""
+  """The environment is unspecified."""
   ENVIRONMENT_BROWSER = 'ENVIRONMENT_BROWSER'
-  """Operates in a web browser."""
+  """The tool operates in a web browser."""
   ENVIRONMENT_MOBILE = 'ENVIRONMENT_MOBILE'
-  """Operates in a mobile environment."""
+  """The tool operates in a mobile environment."""
   ENVIRONMENT_DESKTOP = 'ENVIRONMENT_DESKTOP'
-  """Operates in a desktop environment."""
+  """The tool operates in a desktop environment."""
 
 
 class PhishBlockThreshold(_common.CaseInSensitiveEnum):
@@ -4574,39 +4574,40 @@ class RetrievalDict(TypedDict, total=False):
 
 
 class ComputerUse(_common.BaseModel):
-  """Tool to support computer use."""
+  """A tool that enables the model to interact directly with a computer environment."""
 
   environment: Optional[Environment] = Field(
-      default=None, description="""Required. The environment being operated."""
+      default=None,
+      description="""Required. The target environment where the computer use tool operates.""",
   )
   excluded_predefined_functions: Optional[list[str]] = Field(
       default=None,
-      description="""Optional. By default, [predefined functions](https://cloud.google.com/vertex-ai/generative-ai/docs/computer-use#supported-actions) are included in the final model call. Some of them can be explicitly excluded from being automatically included. This can serve two purposes: 1. Using a more restricted / different action space. 2. Improving the definitions / instructions of predefined functions.""",
+      description="""Optional. A list of predefined functions to explicitly exclude from the model call. By default, [predefined functions](https://cloud.google.com/vertex-ai/generative-ai/docs/computer-use#supported-actions) are included. Excluding functions allows for a more restricted action space or custom definitions for predefined functions.""",
   )
   enable_prompt_injection_detection: Optional[bool] = Field(
       default=None,
-      description="""Optional. Enables the prompt injection detection check on computer-use request.""",
+      description="""Optional. Whether to enable the prompt injection detection check on the computer use request.""",
   )
   disabled_safety_policies: Optional[list[SafetyPolicy]] = Field(
       default=None,
-      description="""Optional. Disabled safety policies for computer use.""",
+      description="""Optional. A list of safety policies to disable for the computer use tool.""",
   )
 
 
 class ComputerUseDict(TypedDict, total=False):
-  """Tool to support computer use."""
+  """A tool that enables the model to interact directly with a computer environment."""
 
   environment: Optional[Environment]
-  """Required. The environment being operated."""
+  """Required. The target environment where the computer use tool operates."""
 
   excluded_predefined_functions: Optional[list[str]]
-  """Optional. By default, [predefined functions](https://cloud.google.com/vertex-ai/generative-ai/docs/computer-use#supported-actions) are included in the final model call. Some of them can be explicitly excluded from being automatically included. This can serve two purposes: 1. Using a more restricted / different action space. 2. Improving the definitions / instructions of predefined functions."""
+  """Optional. A list of predefined functions to explicitly exclude from the model call. By default, [predefined functions](https://cloud.google.com/vertex-ai/generative-ai/docs/computer-use#supported-actions) are included. Excluding functions allows for a more restricted action space or custom definitions for predefined functions."""
 
   enable_prompt_injection_detection: Optional[bool]
-  """Optional. Enables the prompt injection detection check on computer-use request."""
+  """Optional. Whether to enable the prompt injection detection check on the computer use request."""
 
   disabled_safety_policies: Optional[list[SafetyPolicy]]
-  """Optional. Disabled safety policies for computer use."""
+  """Optional. A list of safety policies to disable for the computer use tool."""
 
 
 ComputerUseOrDict = Union[ComputerUse, ComputerUseDict]
@@ -8405,9 +8406,7 @@ class Candidate(_common.BaseModel):
   )
   continuation_token: Optional[bytes] = Field(
       default=None,
-      description="""An opaque continuation token returned when `finish_reason` is
-      `CONTINUATION`. Pass it in a subsequent request to continue generation.
-      """,
+      description="""Output only. An optional opaque continuation token returned when `finish_reason` is `CONTINUATION`. Clients can pass this token in a subsequent `GenerateContentRequest` to continue generation.""",
   )
 
 
@@ -8456,9 +8455,7 @@ class CandidateDict(TypedDict, total=False):
   """Output only. Metadata returned when the model uses the `url_context` tool to get information from a user-provided URL."""
 
   continuation_token: Optional[bytes]
-  """An opaque continuation token returned when `finish_reason` is
-      `CONTINUATION`. Pass it in a subsequent request to continue generation.
-      """
+  """Output only. An optional opaque continuation token returned when `finish_reason` is `CONTINUATION`. Clients can pass this token in a subsequent `GenerateContentRequest` to continue generation."""
 
 
 CandidateOrDict = Union[Candidate, CandidateDict]
@@ -23273,6 +23270,10 @@ class PredefinedMetricSpec(_common.BaseModel):
       default=None,
       description="""The parameters needed to run the pre-defined metric.""",
   )
+  step_autorater_configs: Optional[dict[str, AutoraterConfig]] = Field(
+      default=None,
+      description="""Optional. Per-step autorater overrides for this predefined metric. Keys are evaluation stage names (snake_case). Valid keys: "intent_extraction", "rubric_generation", "rubric_validation". Unknown keys return INVALID_ARGUMENT.""",
+  )
 
 
 class PredefinedMetricSpecDict(TypedDict, total=False):
@@ -23285,6 +23286,9 @@ class PredefinedMetricSpecDict(TypedDict, total=False):
   metric_spec_parameters: Optional[dict[str, Any]]
   """The parameters needed to run the pre-defined metric."""
 
+  step_autorater_configs: Optional[dict[str, AutoraterConfigDict]]
+  """Optional. Per-step autorater overrides for this predefined metric. Keys are evaluation stage names (snake_case). Valid keys: "intent_extraction", "rubric_generation", "rubric_validation". Unknown keys return INVALID_ARGUMENT."""
+
 
 PredefinedMetricSpecOrDict = Union[
     PredefinedMetricSpec, PredefinedMetricSpecDict