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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"OpenApiSchema System.Text.Json (De)Serialization","articleBody":"**Is your feature request related to a problem? Please describe.**\nDefault System.Text.Json Serialization of OpenApiJsonSchema is verbose (complete) and unsatisfying.\n\n**Describe the solution you'd like**\nA simple way to fix it, probably via a JsonConverter, either by default or to configure on AddMVC json options.\n\n**Describe alternatives you've considered**\n\nOtherwise, OpenApiSchema could support direct serialization to a JsonWriter:\n\n**Additional context**\nTurns out I did it in my projects, and I also just really wanted to know if this was appropriate, or I missed something available\n```c#\n\ninternal class SchemaConverter : System.Text.Json.Serialization.JsonConverter\u003cOpenApiSchema\u003e\n{\n\tprivate static readonly ConcurrentDictionary\u003cint, JsonSerializerOptions\u003e _jsonSerializerCache = new();\n\tpublic override OpenApiSchema Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)\n\t{\n\t\tvar correctedOptions = _jsonSerializerCache.GetOrAdd(options.GetHashCode(), _ =\u003e\n\t\t{\n\t\t\tvar optionsCopy = new JsonSerializerOptions(options);\n\t\t\toptionsCopy.Converters.Remove(options.Converters.First(c =\u003e c is SchemaConverter));\n\t\t\treturn optionsCopy;\n\t\t});\n\n\t\treturn JsonSerializer.Deserialize\u003cOpenApiSchema\u003e(ref reader, correctedOptions)!;\n\t}\n\n\tpublic override void Write(Utf8JsonWriter writer, OpenApiSchema value, JsonSerializerOptions options)\n\t{\n\t\tusing var memoryStream = new MemoryStream();\n\t\tusing (var textWriter = new StreamWriter(memoryStream, leaveOpen: true))\n\t\t{\n\t\t\tvalue.SerializeAsV31(new OpenApiJsonWriter(textWriter));\n\t\t\ttextWriter.Flush();\n\t\t}\n\n\t\tmemoryStream.Position = 0;\n\t\twriter.WriteRawValue(memoryStream.ToArray());\n\t}\n}\n\n\n```","author":{"url":"https://github.com/Poltuu","@type":"Person","name":"Poltuu"},"datePublished":"2025-04-02T09:51:00.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/2299/OpenAPI.NET/issues/2299"}