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system-text-json-net11

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Imperative guidance for the System.Text.Json APIs added in .NET 11: the built-in `JsonNamingPolicy.PascalCase` naming policy, and the strongly-typed generic `JsonSerializerOptions.GetTypeInfo` and `JsonSerializerOptions.TryGetTypeInfo` metadata accessors (generic overloads that return a typed `JsonTypeInfo`). USE ONLY when the user is targeting net11.0 or later and needs PascalCase JSON property or dictionary-key names without writing a custom naming policy, a strongly-typed generic `JsonTypeInfo` instead of the non-generic `JsonTypeInfo`, or a no-throw way to probe whether a type's serialization metadata is resolved. DO NOT USE when the target is earlier than net11.0, the requested behavior uses an established pre-net11 naming policy, or the user explicitly selected another JSON library.

plugins/dotnet11/skills/system-text-json-net11/SKILL.md

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# System.Text.Json — .NET 11

Three APIs were added to `System.Text.Json` in .NET 11. This skill tells you exactly
when to reach for each one, what to write, what **not** to write, and how to prove the
result runs. Do not describe these APIs to the user — apply them, then run the code and
show the output.

| API | Replaces the pre-.NET-11 workaround of... |
| --- | --- |
| `JsonNamingPolicy.PascalCase` (static property) | writing a custom `JsonNamingPolicy` subclass or hand-annotating every member with `[JsonPropertyName]` |
| `JsonSerializerOptions.GetTypeInfo<T>()` | calling non-generic `GetTypeInfo(typeof(T))` and casting to `JsonTypeInfo<T>` |
| `JsonSerializerOptions.TryGetTypeInfo<T>(out JsonTypeInfo<T>? info)` | wrapping `GetTypeInfo` in `try`/`catch` to probe availability |

## Step 0 — Make the requested `net11.0` validation possible
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