diff --git a/compiler/src/steps/validate-model.ts b/compiler/src/steps/validate-model.ts
index 469a94b79c..d963c57b6a 100644
--- a/compiler/src/steps/validate-model.ts
+++ b/compiler/src/steps/validate-model.ts
@@ -186,6 +186,13 @@ export default async function validateModel (apiModel: model.Model, restSpec: Ma
   apiModel.endpoints.filter(ep => readyForValidation(ep)).forEach(validateEndpoint)
   apiModel.endpoints.filter(ep => !readyForValidation(ep)).forEach(validateEndpoint)
 
+  // Check types are used
+  for (const type of apiModel.types) {
+    if (!typesSeen.has(fqn(type.name))) {
+      errors.addGeneralError(`Dangling type '${fqn(type.name)}'`)
+    }
+  }
+
   // Removes types that we've not seen
   apiModel.types = apiModel.types.filter(type => typesSeen.has(fqn(type.name)))
 
diff --git a/output/schema/validation-errors.json b/output/schema/validation-errors.json
index f6fab219e8..edc81f78cc 100644
--- a/output/schema/validation-errors.json
+++ b/output/schema/validation-errors.json
@@ -1,4 +1,101 @@
 {
   "endpointErrors": {},
-  "generalErrors": []
+  "generalErrors": [
+    "Dangling type '_global.scripts_painless_execute:PainlessExecutionPosition'",
+    "Dangling type '_global.scripts_painless_execute:PainlessScript'",
+    "Dangling type '_global.search._types:HitMetadata'",
+    "Dangling type '_global.search._types:SmoothingModel'",
+    "Dangling type '_spec_utils:Setting'",
+    "Dangling type '_types:ActionIds'",
+    "Dangling type '_types:CustomResponseBuilderBase'",
+    "Dangling type '_types:DistanceParsed'",
+    "Dangling type '_types:DynamicResponseBase'",
+    "Dangling type '_types:ElasticsearchResponseBase'",
+    "Dangling type '_types:ElasticsearchUrlFormatter'",
+    "Dangling type '_types:HttpMethod'",
+    "Dangling type '_types:IndexMetrics'",
+    "Dangling type '_types:LatLon'",
+    "Dangling type '_types:LogLevel'",
+    "Dangling type '_types:LongId'",
+    "Dangling type '_types:Transform'",
+    "Dangling type '_types:UnitFloatSeconds'",
+    "Dangling type '_types:Uri'",
+    "Dangling type '_types:UrlParameter'",
+    "Dangling type '_types:VersionNumbers'",
+    "Dangling type '_types:VersionStrings'",
+    "Dangling type '_types.aggregations:AggregationVisitorScope'",
+    "Dangling type '_types.mapping:GeoTree'",
+    "Dangling type '_types.mapping:PropertyWithClrOrigin'",
+    "Dangling type '_types.query_dsl:CharacterType'",
+    "Dangling type '_types.query_dsl:FieldNameQuery'",
+    "Dangling type '_types.query_dsl:GeoFormat'",
+    "Dangling type '_types.query_dsl:Intervals'",
+    "Dangling type '_types.query_dsl:RewriteMultiTerm'",
+    "Dangling type '_types.query_dsl:SpanSubQuery'",
+    "Dangling type '_types.query_dsl:TokenType'",
+    "Dangling type '_types.query_dsl:VisitorScope'",
+    "Dangling type 'cat.transforms:TransformState'",
+    "Dangling type 'cat.transforms:TransformType'",
+    "Dangling type 'cluster.allocation_explain:StoreCopy'",
+    "Dangling type 'cluster.reroute:CommandAction'",
+    "Dangling type 'esql._types:DataPartitioning'",
+    "Dangling type 'ilm._types:Configurations'",
+    "Dangling type 'ilm._types:ForceMergeConfiguration'",
+    "Dangling type 'ilm._types:ShrinkConfiguration'",
+    "Dangling type 'indices._types:Fielddata'",
+    "Dangling type 'indices._types:FielddataFilter'",
+    "Dangling type 'indices._types:FielddataLoading'",
+    "Dangling type 'indices._types:FielddataRegexFilter'",
+    "Dangling type 'indices._types:FielddataSettings'",
+    "Dangling type 'indices._types:GeoPointFielddataFormat'",
+    "Dangling type 'indices._types:IndicesCircuitBreakerSettings'",
+    "Dangling type 'indices._types:IndicesModuleSettings'",
+    "Dangling type 'indices._types:IndicesRecoverySettings'",
+    "Dangling type 'indices._types:OverlappingIndexTemplate'",
+    "Dangling type 'indices._types:StringFielddata'",
+    "Dangling type 'indices._types:StringFielddataFormat'",
+    "Dangling type 'indices.stats:ShardFielddata'",
+    "Dangling type 'inference._types:AmazonSageMakerElasticServiceSettings'",
+    "Dangling type 'inference._types:AmazonSageMakerElasticTaskSettings'",
+    "Dangling type 'inference._types:AmazonSageMakerElementType'",
+    "Dangling type 'inference._types:AmazonSageMakerOpenAiTaskSettings'",
+    "Dangling type 'inference._types:AmazonSageMakerSimilarity'",
+    "Dangling type 'inference._types:EisServiceSettings'",
+    "Dangling type 'inference._types:EisServiceType'",
+    "Dangling type 'inference._types:EisTaskSettings'",
+    "Dangling type 'inference._types:EisTaskType'",
+    "Dangling type 'ingest._types:PipelineFailure'",
+    "Dangling type 'ml._types:CountFunction'",
+    "Dangling type 'ml._types:DistinctCountFunction'",
+    "Dangling type 'ml._types:GeographicFunction'",
+    "Dangling type 'ml._types:InfoContentFunction'",
+    "Dangling type 'ml._types:MetricFunction'",
+    "Dangling type 'ml._types:ModelPlotConfigEnabled'",
+    "Dangling type 'ml._types:NlpInferenceConfigUpdateContainer'",
+    "Dangling type 'ml._types:NlpTokenizationUpdateContainer'",
+    "Dangling type 'ml._types:NonNullSumFunction'",
+    "Dangling type 'ml._types:NonZeroCountFunction'",
+    "Dangling type 'ml._types:RareFunction'",
+    "Dangling type 'ml._types:SumFunction'",
+    "Dangling type 'search_application._types:AnalyticsEvent'",
+    "Dangling type 'transform._types:Sync'",
+    "Dangling type 'watcher._types:Interval'",
+    "Dangling type 'watcher._types:IntervalUnit'",
+    "Dangling type 'watcher._types:JiraAction'",
+    "Dangling type 'watcher._types:JiraIssueAssignee'",
+    "Dangling type 'watcher._types:JiraIssueFields'",
+    "Dangling type 'watcher._types:JiraIssuePriority'",
+    "Dangling type 'watcher._types:JiraIssueProject'",
+    "Dangling type 'watcher._types:JiraIssueReporter'",
+    "Dangling type 'watcher._types:JiraIssueType'",
+    "Dangling type 'watcher._types:PagerDutySentEvent'",
+    "Dangling type 'watcher._types:SimpleInput'",
+    "Dangling type 'watcher._types:SlackActionMessageResult'",
+    "Dangling type 'watcher._types:TriggerEvent'",
+    "Dangling type 'xpack.usage:Alerting'",
+    "Dangling type 'xpack.usage:AlertingExecution'",
+    "Dangling type 'xpack.usage:AlertingInput'",
+    "Dangling type 'xpack.usage:ExecutionAction'",
+    "Dangling type 'xpack.usage:ForecastStatistics'"
+  ]
 }
\ No newline at end of file