[DO NOT MERGE][bug reproduction] generated Ruby client crashes on oneOf/discriminator response

cassettes/features/v2/security_monitoring/Delete-a-severity-modifier-rule-returns-Rule-successfully-deleted-response.frozen

@@ -0,0 +1 @@
+2026-08-03T09:17:25.445Z

cassettes/features/v2/security_monitoring/Get-a-severity-modifier-rule-returns-Successfully-retrieved-the-severity-modifier-rule-response.frozen

@@ -0,0 +1 @@
+2026-08-03T09:17:28.616Z

examples/v2/security-monitoring/CreateSecurityFindingsAutomationSeverityModifierRule.rb

@@ -0,0 +1,29 @@
+# Create a severity modifier rule returns "Successfully created the severity modifier rule" response
+
+require "datadog_api_client"
+DatadogAPIClient.configure do |config|
+  config.unstable_operations["v2.create_security_findings_automation_severity_modifier_rule".to_sym] = true
+end
+api_instance = DatadogAPIClient::V2::SecurityMonitoringAPI.new
+
+body = DatadogAPIClient::V2::SeverityModifierRuleCreateRequest.new({
+  data: DatadogAPIClient::V2::SeverityModifierRuleDataCreate.new({
+    attributes: DatadogAPIClient::V2::SeverityModifierRuleAttributesCreate.new({
+      action: DatadogAPIClient::V2::SeverityModifierRuleSetAction.new({
+        description: "Lower severity for dev environment noise",
+        severity: DatadogAPIClient::V2::SeverityModifierSeverity::LOW,
+        type: DatadogAPIClient::V2::SeverityModifierRuleSetActionType::SET,
+      }),
+      enabled: true,
+      name: "Downgrade misconfigurations in dev",
+      rule: DatadogAPIClient::V2::AutomationRuleScope.new({
+        finding_types: [
+          DatadogAPIClient::V2::SecurityFindingType::MISCONFIGURATION,
+        ],
+        query: "env:prod team:platform",
+      }),
+    }),
+    type: DatadogAPIClient::V2::SeverityModifierRuleType::SEVERITY_MODIFIER_RULES,
+  }),
+})
+p api_instance.create_security_findings_automation_severity_modifier_rule(body)

examples/v2/security-monitoring/DeleteSecurityFindingsAutomationSeverityModifierRule.rb

@@ -0,0 +1,11 @@
+# Delete a severity modifier rule returns "Rule successfully deleted." response
+
+require "datadog_api_client"
+DatadogAPIClient.configure do |config|
+  config.unstable_operations["v2.delete_security_findings_automation_severity_modifier_rule".to_sym] = true
+end
+api_instance = DatadogAPIClient::V2::SecurityMonitoringAPI.new
+
+# there is a valid "valid_severity_modifier_rule" in the system
+VALID_SEVERITY_MODIFIER_RULE_DATA_ID = ENV["VALID_SEVERITY_MODIFIER_RULE_DATA_ID"]
+api_instance.delete_security_findings_automation_severity_modifier_rule(VALID_SEVERITY_MODIFIER_RULE_DATA_ID)

examples/v2/security-monitoring/GetSecurityFindingsAutomationSeverityModifierRule.rb

@@ -0,0 +1,11 @@
+# Get a severity modifier rule returns "Successfully retrieved the severity modifier rule" response
+
+require "datadog_api_client"
+DatadogAPIClient.configure do |config|
+  config.unstable_operations["v2.get_security_findings_automation_severity_modifier_rule".to_sym] = true
+end
+api_instance = DatadogAPIClient::V2::SecurityMonitoringAPI.new
+
+# there is a valid "valid_severity_modifier_rule" in the system
+VALID_SEVERITY_MODIFIER_RULE_DATA_ID = ENV["VALID_SEVERITY_MODIFIER_RULE_DATA_ID"]
+p api_instance.get_security_findings_automation_severity_modifier_rule(VALID_SEVERITY_MODIFIER_RULE_DATA_ID)

features/scenarios_model_mapping.rb

@@ -2130,6 +2130,15 @@
             "rule_id" => "UUID",
             "body" => "MuteRuleUpdateRequest",
     },
+    "v2.CreateSecurityFindingsAutomationSeverityModifierRule" => {
+            "body" => "SeverityModifierRuleCreateRequest",
+    },
+    "v2.DeleteSecurityFindingsAutomationSeverityModifierRule" => {
+            "rule_id" => "UUID",
+    },
+    "v2.GetSecurityFindingsAutomationSeverityModifierRule" => {
+            "rule_id" => "UUID",
+    },
     "v2.ListSecurityFindingsAutomationTicketCreationRules" => {
             "page_size" => "Integer",
             "page_number" => "Integer",

features/v2/given.json

@@ -1354,6 +1354,18 @@
     "tag": "Security Monitoring",
     "operationId": "CreateSecurityFindingsAutomationMuteRule"
   },
+  {
+    "parameters": [
+      {
+        "name": "body",
+        "value": "{\n  \"data\": {\n    \"type\": \"severity_modifier_rules\",\n    \"attributes\": {\n      \"name\": \"{{ unique }}\",\n      \"enabled\": true,\n      \"rule\": {\n        \"finding_types\": [\"misconfiguration\"],\n        \"query\": \"env:staging\"\n      },\n      \"action\": {\n        \"type\": \"set\",\n        \"severity\": \"low\"\n      }\n    }\n  }\n}"
+      }
+    ],
+    "step": "there is a valid \"valid_severity_modifier_rule\" in the system",
+    "key": "valid_severity_modifier_rule",
+    "tag": "Security Monitoring",
+    "operationId": "CreateSecurityFindingsAutomationSeverityModifierRule"
+  },
   {
     "parameters": [
       {

features/v2/security_monitoring.feature

@@ -952,6 +952,30 @@ Feature: Security Monitoring
     And the response "data.attributes.exclusion_filters[0].name" is equal to "Exclude staging"
     And the response "data.attributes.exclusion_filters[0].query" is equal to "source:staging"
 
+  @generated @skip @team:DataDog/k9-automation
+  Scenario: Create a severity modifier rule returns "Bad Request" response
+    Given operation "CreateSecurityFindingsAutomationSeverityModifierRule" enabled
+    And new "CreateSecurityFindingsAutomationSeverityModifierRule" request
+    And body with value {"data": {"attributes": {"action": {"description": "Lower severity for dev environment noise", "severity": "low", "type": "set"}, "enabled": true, "name": "Downgrade misconfigurations in dev", "rule": {"finding_types": ["misconfiguration"], "query": "env:prod team:platform"}}, "type": "severity_modifier_rules"}}
+    When the request is sent
+    Then the response status is 400 Bad Request
+
+  @generated @skip @team:DataDog/k9-automation
+  Scenario: Create a severity modifier rule returns "Successfully created the severity modifier rule" response
+    Given operation "CreateSecurityFindingsAutomationSeverityModifierRule" enabled
+    And new "CreateSecurityFindingsAutomationSeverityModifierRule" request
+    And body with value {"data": {"attributes": {"action": {"description": "Lower severity for dev environment noise", "severity": "low", "type": "set"}, "enabled": true, "name": "Downgrade misconfigurations in dev", "rule": {"finding_types": ["misconfiguration"], "query": "env:prod team:platform"}}, "type": "severity_modifier_rules"}}
+    When the request is sent
+    Then the response status is 201 Successfully created the severity modifier rule
+
+  @generated @skip @team:DataDog/k9-automation
+  Scenario: Create a severity modifier rule returns "Unprocessable Entity" response
+    Given operation "CreateSecurityFindingsAutomationSeverityModifierRule" enabled
+    And new "CreateSecurityFindingsAutomationSeverityModifierRule" request
+    And body with value {"data": {"attributes": {"action": {"description": "Lower severity for dev environment noise", "severity": "low", "type": "set"}, "enabled": true, "name": "Downgrade misconfigurations in dev", "rule": {"finding_types": ["misconfiguration"], "query": "env:prod team:platform"}}, "type": "severity_modifier_rules"}}
+    When the request is sent
+    Then the response status is 422 Unprocessable Entity
+
   @generated @skip @team:DataDog/cloud-siem
   Scenario: Create a suppression rule returns "Bad Request" response
     Given new "CreateSecurityMonitoringSuppression" request
@@ -1265,6 +1289,23 @@ Feature: Security Monitoring
     When the request is sent
     Then the response status is 204 OK
 
+  @generated @skip @team:DataDog/k9-automation
+  Scenario: Delete a severity modifier rule returns "Not Found" response
+    Given operation "DeleteSecurityFindingsAutomationSeverityModifierRule" enabled
+    And new "DeleteSecurityFindingsAutomationSeverityModifierRule" request
+    And request contains "rule_id" parameter from "REPLACE.ME"
+    When the request is sent
+    Then the response status is 404 Not Found
+
+  @team:DataDog/k9-automation
+  Scenario: Delete a severity modifier rule returns "Rule successfully deleted." response
+    Given operation "DeleteSecurityFindingsAutomationSeverityModifierRule" enabled
+    And there is a valid "valid_severity_modifier_rule" in the system
+    And new "DeleteSecurityFindingsAutomationSeverityModifierRule" request
+    And request contains "rule_id" parameter from "valid_severity_modifier_rule.data.id"
+    When the request is sent
+    Then the response status is 204 Rule successfully deleted.
+
   @team:DataDog/cloud-security-posture-management
   Scenario: Delete a signal-based notification rule returns "Not Found" response
     Given new "DeleteSignalNotificationRule" request
@@ -1866,6 +1907,25 @@ Feature: Security Monitoring
     And the response "data.attributes.exclusion_filters[0].name" is equal to "Exclude logs from staging"
     And the response "data.attributes.exclusion_filters[0].query" is equal to "source:staging"
 
+  @generated @skip @team:DataDog/k9-automation
+  Scenario: Get a severity modifier rule returns "Not Found" response
+    Given operation "GetSecurityFindingsAutomationSeverityModifierRule" enabled
+    And new "GetSecurityFindingsAutomationSeverityModifierRule" request
+    And request contains "rule_id" parameter from "REPLACE.ME"
+    When the request is sent
+    Then the response status is 404 Not Found
+
+  @team:DataDog/k9-automation
+  Scenario: Get a severity modifier rule returns "Successfully retrieved the severity modifier rule" response
+    Given operation "GetSecurityFindingsAutomationSeverityModifierRule" enabled
+    And there is a valid "valid_severity_modifier_rule" in the system
+    And new "GetSecurityFindingsAutomationSeverityModifierRule" request
+    And request contains "rule_id" parameter from "valid_severity_modifier_rule.data.id"
+    When the request is sent
+    Then the response status is 200 Successfully retrieved the severity modifier rule
+    And the response "data.id" is equal to "{{ valid_severity_modifier_rule.data.id }}"
+    And the response "data.type" is equal to "severity_modifier_rules"
+
   @replay-only @team:DataDog/cloud-siem
   Scenario: Get a signal's details returns "Not Found" response
     Given new "GetSecurityMonitoringSignal" request

features/v2/undo.json

@@ -7454,6 +7454,31 @@
       "type": "idempotent"
     }
   },
+  "CreateSecurityFindingsAutomationSeverityModifierRule": {
+    "tag": "Security Monitoring",
+    "undo": {
+      "operationId": "DeleteSecurityFindingsAutomationSeverityModifierRule",
+      "parameters": [
+        {
+          "name": "rule_id",
+          "source": "data.id"
+        }
+      ],
+      "type": "unsafe"
+    }
+  },
+  "DeleteSecurityFindingsAutomationSeverityModifierRule": {
+    "tag": "Security Monitoring",
+    "undo": {
+      "type": "idempotent"
+    }
+  },
+  "GetSecurityFindingsAutomationSeverityModifierRule": {
+    "tag": "Security Monitoring",
+    "undo": {
+      "type": "safe"
+    }
+  },
   "ListSecurityFindingsAutomationTicketCreationRules": {
     "tag": "Security Monitoring",
     "undo": {

lib/datadog_api_client/configuration.rb

@@ -305,6 +305,7 @@ def initialize
             "v2.create_sample_log_generation_subscription": false,
             "v2.create_security_findings_automation_due_date_rule": false,
             "v2.create_security_findings_automation_mute_rule": false,
+            "v2.create_security_findings_automation_severity_modifier_rule": false,
             "v2.create_security_findings_automation_ticket_creation_rule": false,
             "v2.create_security_monitoring_dataset": false,
             "v2.create_security_monitoring_integration_config": false,
@@ -316,6 +317,7 @@ def initialize
             "v2.delete_sample_log_generation_subscription": false,
             "v2.delete_security_findings_automation_due_date_rule": false,
             "v2.delete_security_findings_automation_mute_rule": false,
+            "v2.delete_security_findings_automation_severity_modifier_rule": false,
             "v2.delete_security_findings_automation_ticket_creation_rule": false,
             "v2.delete_security_monitoring_dataset": false,
             "v2.delete_security_monitoring_integration_config": false,
@@ -330,6 +332,7 @@ def initialize
             "v2.get_secrets_rules": false,
             "v2.get_security_findings_automation_due_date_rule": false,
             "v2.get_security_findings_automation_mute_rule": false,
+            "v2.get_security_findings_automation_severity_modifier_rule": false,
             "v2.get_security_findings_automation_ticket_creation_rule": false,
             "v2.get_security_monitoring_dataset": false,
             "v2.get_security_monitoring_dataset_by_version": false,

lib/datadog_api_client/inflector.rb

@@ -7268,6 +7268,20 @@ def overrides
           "v2.service_repository_info_status" => "ServiceRepositoryInfoStatus",
           "v2.session_id_array" => "SessionIdArray",
           "v2.session_id_data" => "SessionIdData",
+          "v2.severity_modifier_rule_action" => "SeverityModifierRuleAction",
+          "v2.severity_modifier_rule_attributes_create" => "SeverityModifierRuleAttributesCreate",
+          "v2.severity_modifier_rule_attributes_response" => "SeverityModifierRuleAttributesResponse",
+          "v2.severity_modifier_rule_create_request" => "SeverityModifierRuleCreateRequest",
+          "v2.severity_modifier_rule_data_create" => "SeverityModifierRuleDataCreate",
+          "v2.severity_modifier_rule_data_response" => "SeverityModifierRuleDataResponse",
+          "v2.severity_modifier_rule_response" => "SeverityModifierRuleResponse",
+          "v2.severity_modifier_rule_set_action" => "SeverityModifierRuleSetAction",
+          "v2.severity_modifier_rule_set_action_type" => "SeverityModifierRuleSetActionType",
+          "v2.severity_modifier_rule_shift_action" => "SeverityModifierRuleShiftAction",
+          "v2.severity_modifier_rule_shift_action_type" => "SeverityModifierRuleShiftActionType",
+          "v2.severity_modifier_rule_type" => "SeverityModifierRuleType",
+          "v2.severity_modifier_severity" => "SeverityModifierSeverity",
+          "v2.severity_modifier_severity_delta" => "SeverityModifierSeverityDelta",
           "v2.shared_dashboard_included" => "SharedDashboardIncluded",
           "v2.shared_dashboard_included_dashboard" => "SharedDashboardIncludedDashboard",
           "v2.shared_dashboard_included_dashboard_attributes" => "SharedDashboardIncludedDashboardAttributes",