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docs/snippets/dart/llm/structured_extraction.md

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+<!-- snippet:syntax-only -->
+
+```dart title="Dart"
+import 'dart:convert';
+
+import 'package:kreuzberg/kreuzberg.dart';
+
+Future<void> main() async {
+  final schema = jsonEncode(<String, Object?>{
+    'type': 'object',
+    'properties': <String, Object?>{
+      'title': <String, Object?>{'type': 'string'},
+      'authors': <String, Object?>{
+        'type': 'array',
+        'items': <String, Object?>{'type': 'string'},
+      },
+      'date': <String, Object?>{'type': 'string'},
+    },
+    'required': <String>['title', 'authors', 'date'],
+    'additionalProperties': false,
+  });
+
+  final config = ExtractionConfig(
+    useCache: true,
+    enableQualityProcessing: true,
+    forceOcr: false,
+    disableOcr: false,
+    structuredExtraction: StructuredExtractionConfig(
+      schema: schema,
+      schemaName: 'paper_metadata',
+      strict: true,
+      llm: const LlmConfig(model: 'openai/gpt-4o-mini'),
+    ),
+    resultFormat: ResultFormat.unified,
+    outputFormat: OutputFormat.plain(),
+    includeDocumentStructure: false,
+    maxArchiveDepth: 3,
+    useLayoutForMarkdown: false,
+  );
+
+  final result = await KreuzbergBridge.extractFile('paper.pdf', null, config);
+  final structured = result.structuredOutput;
+  if (structured != null) {
+    print(structured);
+  }
+}
+```