skill CX Codex

serialization · wshaddix — Claude Code skill: what it does, how to install

Q: How to install serialization in Claude Code?

Run `npx skills add wshaddix/dotnet-skills --skill serialization -a claude-code` in your terminal. This writes the configuration into `~/.claude/skills/serialization/SKILL.md`.

Guides your assistant on selecting and configuring .NET serialization formats, focusing on Native AOT, source generators, Protobuf, and MessagePack.

Install into Claude Code · Skills CLI (Vercel) All methods and platforms ↓

npx skills add wshaddix/dotnet-skills --skill serialization -a claude-code

Open on GitHub

What serialization does

This skill equips your coding agent with decision guidelines and code structures for modern .NET serialization. It guides the choice between text and binary formats based on payload size, network throughput, and client requirements.

The skill covers JsonSerializerContext declarations, polymorphic type mapping, ASP.NET Core integration, and Google.Protobuf schemas. It also includes explicit field-numbering conventions to prevent contract breakages across distributed updates.

Newtonsoft.Json relies on runtime reflection and breaks under Native AOT. This skill keeps codebases strictly aligned with compile-time source generation.

What it helps with

configure System.Text.Json source generators for Native AOT
design Protobuf messages with safe field versioning rules
register custom JsonSerializerContext into ASP.NET Core APIs
replace reflection-based serializers with compile-time code generation

Example prompts for the agent

Set up a source-generated JsonSerializerContext for Order records with polymorphic types
Draft a proto3 schema for order items while reserving deleted field numbers
Configure ASP.NET Core Minimal APIs to use source generators instead of reflection

How to install serialization

1Skills CLI (Vercel)

npx skills add wshaddix/dotnet-skills --skill serialization -a claude-code

2Manually: put the files in place

~/.claude/skills/serialization/SKILL.md

Copy the whole skill folder; for one project use .claude/skills/serialization/

1Skills CLI (Vercel)

npx skills add wshaddix/dotnet-skills --skill serialization -a codex

2Manually: put the files in place

.agents/skills/serialization/SKILL.md

For all projects use ~/.agents/skills/

1Skills CLI (Vercel)

npx skills add wshaddix/dotnet-skills --skill serialization -a cursor

2Manually: put the files in place

.cursor/skills/serialization/SKILL.md

Cursor also reads .agents/skills/ and .claude/skills/

1GitHub CLI

gh skill install wshaddix/dotnet-skills serialization

2Manually: put the files in place

.github/skills/serialization/SKILL.md

1Skills CLI (Vercel)

npx skills add wshaddix/dotnet-skills --skill serialization -a gemini-cli

2Platform CLI

gemini skills install https://github.com/wshaddix/dotnet-skills --path skills/serialization

Manually: put the files in place

.devin/skills/serialization/SKILL.md

The legacy .windsurf/skills/ path still works

Skills CLI (Vercel)

npx skills add wshaddix/dotnet-skills --skill serialization -a opencode

Step by step, with commands for each platform: How to install skills in Claude Code: five ways

Questions about serialization

How to install serialization in Claude Code?

Run npx skills add wshaddix/dotnet-skills --skill serialization -a claude-code in your terminal. This writes the configuration into ~/.claude/skills/serialization/SKILL.md.

What does the serialization skill do?

It teaches AI agents how to write high-throughput serialization code in .NET using source generators, Protobuf, and MessagePack.

Why avoid Newtonsoft.Json for Native AOT apps?

Newtonsoft.Json relies on runtime reflection, which is incompatible with Native AOT trimming. It also embeds type structures directly into payloads, creating versioning risks.

Similar skills

All skills for Backend and APIs →

serialization by other authors comes first.

serialization Aaronontheweb Tells the agent which serialization format to use in .NET: schema-based over reflection, System.Text.Json with source generators for JSON. Useful when designing APIs, messaging or event storage. CX Codex +1 569installs mcp-builder official anthropics This skill walks through building an MCP server in TypeScript or Python, from reading the protocol spec to writing tests and evaluation questions. 130,949installs claude-api official anthropics Reference skill for the Claude API and Anthropic SDK that enforces valid model IDs, adaptive thinking, and streaming. 74,198installs lark-im larksuite This skill lets an agent work with Lark IM messages, chats, files, and interactive cards. Use it when coding tasks need access to team conversations. CX Codex +1 472,900installs lark-event larksuite Listens to Lark/Feishu events and streams them as NDJSON. Use it for bots, message processing, and long-running subscribers. CX Codex +1 466,800installs caveman-discover JuliusBrussee Finds and labels every LLM workflow in your repository so Caveman Cloud breaks down spend by actual job rather than grouping everything into one bucket. CX Codex +1 104,400installs migration JuliusBrussee Enforces reversible, compatibility-safe transitions for schema, data, and API updates. Useful whenever data loss or rollout downtime is unacceptable. CX Codex +1 103,900installs

From the same set13

testcontainers A skill for .NET integration tests: spins up real databases, Redis and message brokers in Docker instead of mocks. CX Codex +1 565installs microsoft-extensions-dependency-injection A skill that tames service registrations in .NET: splits Program.cs into extension methods and helps you pick the right service lifetime. CX Codex +1 549installs logging-observability Adds structured Serilog logging, request correlation, and HTTP request logs for ASP.NET Core Razor Pages. Use it when wiring observability into an app. CX Codex +1 542installs validation-patterns A skill that tells your agent how to validate data in ASP.NET Core, from attributes to FluentValidation and startup option checks. CX Codex +1 537installs project-structure A skill that hands your coding agent a fixed layout for .NET solutions: where projects live, how shared build settings and package versions are wired. CX Codex +1 536installs dotnet-domain-modeling Guides pure C# Domain-Driven Design modeling with entities, aggregate roots, value objects, and domain events, keeping business logic isolated from ORM concerns. CX Codex +1 535installs microsoft-extensions-configuration A skill for Microsoft.Extensions.Configuration: binding settings to classes, startup validation, and IOptions patterns. CX Codex +1 525installs dotnet-wpf-modern A skill that steers your coding agent through modern WPF: generic host, MVVM Toolkit, Fluent theme, current C# features. CX Codex +1 301installs