--- title: "SchemaCompatibility" canonical_url: "https://www.nutrient.io/api/csharp/enums/schema-compatibility/" md_url: "https://www.nutrient.io/api/csharp/enums/schema-compatibility.md" last_updated: "2026-10-08T08:55:57.709Z" description: "Target dialect for a generated JSON Schema." --- Target dialect for a generated JSON Schema. Structured-output modes of the major LLM providers each accept a different subset of JSON Schema; the selected value acts as a preset filter applied on top of the individual `SchemaGenerationSettings` knobs — the effective rule is the stricter of the knob and the dialect limit, and features the dialect rejects are never emitted regardless of the knobs. ```csharp using Nutrient; ``` ## Values | Name | Value | Description | | ------------------------------- | ----- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `SchemaCompatibility.Portable` | `0` | Emit only the intersection accepted by all major structured-output modes (OpenAI strict mode, Anthropic strict tool use, Gemini, and grammar-constrained local inference engines). Nullability uses type arrays, unions use `anyOf`, every object sets `additionalProperties: false` with all properties required, nesting is capped at five levels, and size constraints such as `maxItems` are expressed as description text instead of constraint keywords. This is the default and the safest choice when the consuming provider is not known up front. | | `SchemaCompatibility.OpenAI` | `1` | Target OpenAI Structured Outputs (strict mode). Unlocks constraint keywords OpenAI supports (`minItems`/`maxItems`, string lengths, numeric ranges, `pattern`) while enforcing its documented rejections (no `oneOf`/`allOf`, no `patternProperties`, five-level nesting cap, all properties required, `additionalProperties: false`). | | `SchemaCompatibility.Anthropic` | `2` | Target Anthropic structured outputs / strict tool use. Enforces its documented rejections: no recursion, no `maxItems` or string-length or numeric-range constraints (expressed as description text instead), string formats limited to the documented whitelist, and `additionalProperties: false` on every object. | | `SchemaCompatibility.Gemini` | `3` | Target Google Gemini structured output (JSON Schema path). Unions use `anyOf` only — Gemini silently ignores `oneOf`/`allOf`, so they are never emitted. Constraint keywords Gemini documents (`minItems`/`maxItems`, lengths, numeric ranges) are allowed. | | `SchemaCompatibility.None` | `4` | No dialect filter. The schema is shaped by the individual knobs only and may use any standard JSON Schema feature the knobs enable. Use when the schema is consumed by a validator rather than an LLM structured-output mode. | --- ## Related pages - [Enums](/api/csharp/enums.md) - [Auto Tagging Engine](/api/csharp/enums/auto-tagging-engine.md) - [Description Level](/api/csharp/enums/description-level.md) - [Document Bookmark Source](/api/csharp/enums/document-bookmark-source.md) - [Document Format](/api/csharp/enums/document-format.md) - [Document Markup Mode](/api/csharp/enums/document-markup-mode.md) - [Document Type](/api/csharp/enums/document-type.md) - [Execution Provider](/api/csharp/enums/execution-provider.md) - [Form Vlm Enrichment Model](/api/csharp/enums/form-vlm-enrichment-model.md) - [Html Layout Type](/api/csharp/enums/html-layout-type.md) - [Image Export Format](/api/csharp/enums/image-export-format.md) - [Image Export Mode](/api/csharp/enums/image-export-mode.md) - [Image Setting Mode](/api/csharp/enums/image-setting-mode.md) - [Implicit Conversion](/api/csharp/enums/implicit-conversion.md) - [Inline Style Reference Mode](/api/csharp/enums/inline-style-reference-mode.md) - [Instant Json Render Theme](/api/csharp/enums/instant-json-render-theme.md) - [Json Export Content](/api/csharp/enums/json-export-content.md) - [Json Export Format](/api/csharp/enums/json-export-format.md) - [Ocr Activation Mode](/api/csharp/enums/ocr-activation-mode.md) - [Ocr Engine](/api/csharp/enums/ocr-engine.md) - [Open Settings Mode](/api/csharp/enums/open-settings-mode.md) - [Page Cache Mode](/api/csharp/enums/page-cache-mode.md) - [Paper Normalization Mode](/api/csharp/enums/paper-normalization-mode.md) - [Pdf Border Style](/api/csharp/enums/pdf-border-style.md) - [Pdf Compression](/api/csharp/enums/pdf-compression.md) - [Pdf Conformance](/api/csharp/enums/pdf-conformance.md) - [Pdf Form Field Type](/api/csharp/enums/pdf-form-field-type.md) - [Pdf Line Ending Style](/api/csharp/enums/pdf-line-ending-style.md) - [Pdf Page Sizes](/api/csharp/enums/pdf-page-sizes.md) - [Pdf Rubber Stamp Icon](/api/csharp/enums/pdf-rubber-stamp-icon.md) - [Pdf Save Preferences](/api/csharp/enums/pdf-save-preferences.md) - [Pdf Settings Mode](/api/csharp/enums/pdf-settings-mode.md) - [Pdf Validation Conformance](/api/csharp/enums/pdf-validation-conformance.md) - [Rendering Layout Mode](/api/csharp/enums/rendering-layout-mode.md) - [Restoration Mode](/api/csharp/enums/restoration-mode.md) - [Search Display](/api/csharp/enums/search-display.md) - [Search Mode](/api/csharp/enums/search-mode.md) - [Signature Certification Level](/api/csharp/enums/signature-certification-level.md) - [Signature Format](/api/csharp/enums/signature-format.md) - [Signature Hash Algorithm](/api/csharp/enums/signature-hash-algorithm.md) - [Signature Key Source](/api/csharp/enums/signature-key-source.md) - [Signature Level](/api/csharp/enums/signature-level.md) - [Text Direction](/api/csharp/enums/text-direction.md) - [Tiff Compression](/api/csharp/enums/tiff-compression.md) - [Unit Mode](/api/csharp/enums/unit-mode.md) - [Unparseable Output Handling](/api/csharp/enums/unparseable-output-handling.md) - [Vision Engine](/api/csharp/enums/vision-engine.md) - [Vision Features](/api/csharp/enums/vision-features.md) - [Vision Output Format](/api/csharp/enums/vision-output-format.md) - [Vlm Classification Strategy](/api/csharp/enums/vlm-classification-strategy.md) - [Vlm Provider](/api/csharp/enums/vlm-provider.md) - [Word Refining Method](/api/csharp/enums/word-refining-method.md)