diff --git a/changelog/fragments/1710149156-Add-additional_parameters-to-diagnostics-actions.yaml b/changelog/fragments/1710149156-Add-additional_parameters-to-diagnostics-actions.yaml
new file mode 100644
index 0000000000..cc818da452
--- /dev/null
+++ b/changelog/fragments/1710149156-Add-additional_parameters-to-diagnostics-actions.yaml
@@ -0,0 +1,32 @@
+# Kind can be one of:
+# - breaking-change: a change to previously-documented behavior
+# - deprecation: functionality that is being removed in a later release
+# - bug-fix: fixes a problem in a previous version
+# - enhancement: extends functionality but does not break or fix existing behavior
+# - feature: new functionality
+# - known-issue: problems that we are aware of in a given version
+# - security: impacts on the security of a product or a user’s deployment.
+# - upgrade: important information for someone upgrading from a prior version
+# - other: does not fit into any of the other categories
+kind: enchancement
+
+# Change summary; a 80ish characters long description of the change.
+summary: Add additional_parameters to diagnostics actions
+
+# Long description; in case the summary is not enough to describe the change
+# this field accommodate a description without length limits.
+# NOTE: This field will be rendered only for breaking-change and known-issue kinds at the moment.
+#description:
+
+# Affected component; a word indicating the component this changeset affects.
+component:
+
+# PR URL; optional; the PR number that added the changeset.
+# If not present is automatically filled by the tooling finding the PR where this changelog fragment has been added.
+# NOTE: the tooling supports backports, so it's able to fill the original PR number instead of the backport PR number.
+# Please provide it if you are adding a fragment for a different PR.
+#pr: https://github.com/owner/repo/1234
+
+# Issue URL; optional; the GitHub issue related to this changeset (either closes or is part of).
+# If not present is automatically filled by the tooling with the issue linked to the PR number.
+#issue: https://github.com/owner/repo/1234
diff --git a/internal/pkg/api/handleCheckin.go b/internal/pkg/api/handleCheckin.go
index c2c462c2ff..35f89ee346 100644
--- a/internal/pkg/api/handleCheckin.go
+++ b/internal/pkg/api/handleCheckin.go
@@ -707,7 +707,15 @@ func convertActionData(aType ActionType, raw json.RawMessage) (ad Action_Data, e
 		}
 		err = ad.FromActionUpgrade(d)
 		return
-	case REQUESTDIAGNOSTICS, UNENROLL: // Action types with no data
+	case REQUESTDIAGNOSTICS:
+		d := ActionRequestDiagnostics{}
+		err = json.Unmarshal(raw, &d)
+		if err != nil {
+			return
+		}
+		err = ad.FromActionRequestDiagnostics(d)
+		return
+	case UNENROLL: // Action types with no data
 		return ad, nil
 	default:
 		return ad, fmt.Errorf("data conversion unsupported action type: %s", aType)
diff --git a/internal/pkg/api/handleCheckin_test.go b/internal/pkg/api/handleCheckin_test.go
index f26f67daca..a80807f426 100644
--- a/internal/pkg/api/handleCheckin_test.go
+++ b/internal/pkg/api/handleCheckin_test.go
@@ -89,6 +89,12 @@ func TestConvertActionData(t *testing.T) {
 		aType:  REQUESTDIAGNOSTICS,
 		expect: Action_Data{},
 		hasErr: false,
+	}, {
+		name:   "request diagnostics with additional cpu metric",
+		aType:  REQUESTDIAGNOSTICS,
+		raw:    json.RawMessage(`{"additional_metrics": ["CPU"]}`),
+		expect: Action_Data{json.RawMessage{`{"additional_metrics":["CPU"]}`}},
+		hasErr: false,
 	}, {
 		name:   "unenroll action",
 		aType:  UNENROLL,
diff --git a/internal/pkg/api/openapi.gen.go b/internal/pkg/api/openapi.gen.go
index 4cc53eee30..f7d91e0079 100644
--- a/internal/pkg/api/openapi.gen.go
+++ b/internal/pkg/api/openapi.gen.go
@@ -35,6 +35,11 @@ const (
 	UPGRADE            ActionType = "UPGRADE"
 )
 
+// Defines values for ActionRequestDiagnosticsAdditionalMetrics.
+const (
+	CPU ActionRequestDiagnosticsAdditionalMetrics = "CPU"
+)
+
 // Defines values for ActionSettingsLogLevel.
 const (
 	ActionSettingsLogLevelDebug   ActionSettingsLogLevel = "debug"
@@ -217,7 +222,13 @@ type ActionPolicyReassign struct {
 }
 
 // ActionRequestDiagnostics The REQUEST_DIAGNOSTICS action data.
-type ActionRequestDiagnostics = interface{}
+type ActionRequestDiagnostics struct {
+	// AdditionalMetrics list optional additional metrics.
+	AdditionalMetrics *[]ActionRequestDiagnosticsAdditionalMetrics `json:"additional_metrics,omitempty"`
+}
+
+// ActionRequestDiagnosticsAdditionalMetrics defines model for ActionRequestDiagnostics.AdditionalMetrics.
+type ActionRequestDiagnosticsAdditionalMetrics string
 
 // ActionSettings The SETTINGS action data.
 type ActionSettings struct {
diff --git a/model/openapi.yml b/model/openapi.yml
index 6b7f5d53b2..efe6f35c88 100644
--- a/model/openapi.yml
+++ b/model/openapi.yml
@@ -286,14 +286,14 @@ components:
         download_rate:
           description: The artifact download rate as bytes per second.
           type: number
-          format: double 
+          format: double
         retry_error_msg:
           description: The error message that is a result of a retryable upgrade download failure.
-          type: string 
+          type: string
         retry_until:
           description: The RFC3339 timestamp of the deadline the upgrade download is retried until.
           type: string
-          format: date-time  
+          format: date-time
     upgrade_metadata_failed:
       description: Upgrade metadata for an upgrade that has failed.
       required:
@@ -549,7 +549,14 @@ components:
       # unenroll actions have no `data` attribute
     actionRequestDiagnostics:
       description: The REQUEST_DIAGNOSTICS action data.
-      # diagnostics actions have no `data` attribute
+      properties:
+        additional_metrics:
+          description: list optional additional metrics.
+          type: array
+          items:
+            type: string
+            enum:
+              - CPU
     actionPolicyReassign:
       description: The POLICY_REASSIGN action data.
       type: object
diff --git a/pkg/api/types.gen.go b/pkg/api/types.gen.go
index 57c5a879c6..2e436aa57d 100644
--- a/pkg/api/types.gen.go
+++ b/pkg/api/types.gen.go
@@ -32,6 +32,11 @@ const (
 	UPGRADE            ActionType = "UPGRADE"
 )
 
+// Defines values for ActionRequestDiagnosticsAdditionalMetrics.
+const (
+	CPU ActionRequestDiagnosticsAdditionalMetrics = "CPU"
+)
+
 // Defines values for ActionSettingsLogLevel.
 const (
 	ActionSettingsLogLevelDebug   ActionSettingsLogLevel = "debug"
@@ -214,7 +219,13 @@ type ActionPolicyReassign struct {
 }
 
 // ActionRequestDiagnostics The REQUEST_DIAGNOSTICS action data.
-type ActionRequestDiagnostics = interface{}
+type ActionRequestDiagnostics struct {
+	// AdditionalMetrics list optional additional metrics.
+	AdditionalMetrics *[]ActionRequestDiagnosticsAdditionalMetrics `json:"additional_metrics,omitempty"`
+}
+
+// ActionRequestDiagnosticsAdditionalMetrics defines model for ActionRequestDiagnostics.AdditionalMetrics.
+type ActionRequestDiagnosticsAdditionalMetrics string
 
 // ActionSettings The SETTINGS action data.
 type ActionSettings struct {