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system-text-json-net11

Implements new System.Text.Json APIs in .NET 11 for typed metadata access and PascalCase naming.

1|Updated Jun 1, 2026
Search Tags:#csharp#pascalcase#system.text.json#json serialization#jsontypeinfo#naming policy#.net 11
One-click install
npx skills add https://github.com/D1ssolve/craft-agents --skill system-text-json-net11-d1ssolve
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: system-text-json-net11
Source: https://github.com/D1ssolve/craft-agents/tree/main/skills/system-text-json-net11
Command: npx skills add https://github.com/D1ssolve/craft-agents --skill system-text-json-net11-d1ssolve

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve? Developers working with JSON serialization in .NET 11 need guidance on the new System.Text.Json APIs, including strongly-typed JsonTypeInfo access and the new PascalCase naming policy, without relying on untyped overloads or exception-based control flow. ## Core Features & Use Cases - Typed JsonTypeInfo Access: Use GetTypeInfo<T> and TryGetTypeInfo<T> on JsonSerializerOptions to retrieve strongly-typed metadata instead of untyped JsonTypeInfo overloads. - Safe Metadata Lookup: TryGetTypeInfo<T> lets you check whether type metadata is available without catching exceptions. - PascalCase Naming Policy: Apply the new static JsonNamingPolicy.PascalCase property to serialize property names in PascalCase. - Use Case: When building a .NET 11 web API that serializes records to JSON, use GetTypeInfo<Person> to obtain typed metadata and combine it with JsonNamingPolicy.PascalCase to produce output like {"Name":"Jane","Age":30}. ## Quick Start Ask the assistant to show how to serialize a C# record to PascalCase JSON using the new System.Text.Json APIs in .NET 11.

Frequently Asked Questions about system-text-json-net11

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I get a typed JsonTypeInfo in .NET 11?▼

Call GetTypeInfo<T>() on JsonSerializerOptions to retrieve a strongly-typed JsonTypeInfo<T> using the options' configured type-info resolver. This replaces the untyped GetTypeInfo(Type) overload when you know the type at compile time.

How to check if JSON type metadata is available without exceptions?▼

Use TryGetTypeInfo<T>(out JsonTypeInfo<T>?) on JsonSerializerOptions. It returns a boolean indicating whether the metadata was resolved, letting you handle missing type info with a simple branch instead of try-catch blocks.

Does System.Text.Json support PascalCase property naming?▼

Yes, in .NET 11 System.Text.Json adds a static JsonNamingPolicy.PascalCase property. Assign it to JsonSerializerOptions.PropertyNamingPolicy to serialize property names in PascalCase, such as {"FirstName":"John"}.

Can I use GetTypeInfo<T> in .NET 10 or earlier?▼

No, the typed GetTypeInfo<T>, TryGetTypeInfo<T>, and JsonNamingPolicy.PascalCase APIs are only available starting in .NET 11. Projects targeting net10.0 or earlier must use the existing untyped GetTypeInfo(Type) overloads.

Does this guidance apply to Newtonsoft.Json?▼

No, these APIs are specific to System.Text.Json in .NET 11. Newtonsoft.Json has its own contract resolver and naming strategy mechanisms, so this guidance does not transfer to that library.

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