Unity Netcode Design

CommunityPopular

Besty0728

unity-netcode-design

Source-anchored design rules for Netcode for GameObjects 2.x

Overview

Publisher	Besty0728
Repository	`Unity-Skills`
Skill name	`unity-netcode-design`
Stars	1.8K
Forks	164
Bundled files	8
License	MIT
Links	Skill source Repository Homepage

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
8 bundled files
Scripts, templates, and references the model can read while it works. Files are read-only and never executed.
Open source
Published by Besty0728 on GitHub. Read the source before you install it.

Installation

Install the Unity Netcode Design AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
Enable the skill in any chat where you want it available.

Store

Installed

Skills

Add skills

Import one or more skills from a public GitHub folder or a local .skill or .zip archive, or SKILL.md file.

From GitHub URLFrom .skill, .zip, or SKILL.md

GitHub repo or folder

https://github.com/Besty0728/Unity-Skills/tree/main/SkillsForUnity/unity-skills~/skills/netcode-design

Points to a single skill folder, or any folder that contains multiple skills. Public repos only.

CancelContinue

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Use it in TypingMind

Enable Unity Netcode Design in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Unity Netcode Design on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Unity Netcode Design is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

Before calling any skill in this module: if you are about to call a skill with parameters guessed from its name or description, STOP — read this file (or fetch its schema via GET /skills/recommend?includeSchema=true) first. If you already have the parameter definitions from recommend/schema, you may proceed straight to dryRun.

Triggers

Writing or reviewing multiplayer code
Designing server/distributed authority
Wiring RPCs or NetworkVariables
Debugging netcode
编写或审查多人联机代码、设计服务器/分布式权威、连接 RPC 或网络变量、排查 netcode 问题

Netcode for GameObjects - Design Rules

Advisory module. Every rule is distilled from com.unity.netcode.gameobjects 2.x source. Each rule cites a concrete file/line so the reasoning is auditable.

Mode: Documentation only — no REST skills to gate; load freely under any operating mode (Approval / Auto / Bypass).

When to Load This Module

Load before writing or reviewing any of:

NetworkBehaviour scripts (OnNetworkSpawn / OnNetworkDespawn / RPCs / NetworkVariables)
NetworkManager startup / shutdown / scene switching
NetworkObject Spawn / Despawn / ChangeOwnership / TrySetParent
UnityTransport configuration (direct connect / Relay)
Any code that branches on IsHost / IsServer / IsClient / IsOwner

Critical Rule Summary (memorize even if you skip the sub-docs)

#	Rule	Source anchor
1	`Spawn()` / `Despawn()` must be called on Server/Host only; client-side calls fail.	`Runtime/Core/NetworkObject.cs:1884, 1921`
2	`OnNetworkSpawn()` runs before Unity `Start()` and after `Awake`/`OnEnable`.	`Runtime/Core/NetworkBehaviour.cs:704` + `InvokeBehaviourNetworkSpawn` callers
3	Legacy `[ServerRpc]` method names must end with `ServerRpc`; `[ClientRpc]` must end with `ClientRpc` (ILPP enforced at compile time).	`Editor/CodeGen/` ILPP validators
4	New `[Rpc(SendTo.X)]` has no naming constraint; `SendTo` has 11 values.	`Runtime/Messaging/RpcTargets/RpcTarget.cs:9-80`
5	`PlayerPrefab` must exist in `NetworkPrefabsList` or `NetworkConfig.Prefabs` or 2.x runtime rejects it.	`Runtime/Configuration/NetworkConfig.cs:40` + `NetworkPrefabsList.cs:14`
6	Nested NetworkObjects are forbidden (NetworkObject inside another NetworkObject prefab). Re-parent at runtime via `TrySetParent`.	`Runtime/Core/NetworkObject.cs:2135-2215`
7	`NetworkVariable<T>` requires `T` to be `unmanaged` or implement `INetworkSerializable`. `string`, `List<>`, `class` are rejected.	`Runtime/NetworkVariable/NetworkVariable.cs:12` + ILPP
8	`NetworkList<T>` requires `T: unmanaged, IEquatable<T>`. It is NOT `NetworkVariable<List<T>>`.	`Runtime/NetworkVariable/Collections/NetworkList.cs:14`
9	`NetworkSceneManager.LoadScene/UnloadScene` is Server-only.	`Runtime/SceneManagement/NetworkSceneManager.cs:1496, 1252`
10	`UnityTransport.SetRelayServerData` and `SetConnectionData` are mutually exclusive; use one or the other.	`Runtime/Transports/UTP/UnityTransport.cs:776-897`

Sub-doc Routing

Sub-doc	When to read
LIFECYCLE.md	Lifecycle, callback ordering, `Awake/OnNetworkSpawn/Start` differences
OWNERSHIP.md	IsOwner/IsServer/IsHost permission matrix, ChangeOwnership, Distributed Authority
RPC.md	Choosing RPC attributes, `SendTo` semantics, `RpcInvokePermission`, deprecated paths
VARIABLES.md	NetworkVariable/NetworkList init and serialization constraints
SPAWNING.md	Prefab registration → Spawn → Despawn, GlobalObjectIdHash, SpawnAsPlayerObject
SCENE.md	NetworkSceneManager, EnableSceneManagement, in-scene object sync
TRANSPORT.md	UnityTransport direct / Relay / DebugSimulator configuration
PITFALLS.md	30 concrete hallucination pitfalls

Routing to Other Modules

Generating NetworkBehaviour scripts → use the functional netcode module's netcode_add_network_behaviour_script
Bulk attaching NetworkObject/NetworkTransform in the scene → netcode module Components skills
Architecture-level decisions (Server-authoritative vs Distributed Authority) → also load architecture

Version Scope

This document targets com.unity.netcode.gameobjects 2.x (validated against 2.11.0, Unity 6000.0+). Some APIs (SendTo.Authority, RpcInvokePermission, the universal [Rpc] attribute) do not exist in 1.x.

Bundled files

The model reads these on demand while the skill is loaded. They are exposed as readable files and are never executed.

Frequently asked questions

What does the Unity Netcode Design AI skill do?

Source-anchored design rules for Netcode for GameObjects 2.x

Why use Unity Netcode Design on TypingMind?

Because you install it once and use it with any model. Unity Netcode Design is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Unity Netcode Design in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/Besty0728/Unity-Skills/tree/main/SkillsForUnity/unity-skills~/skills/netcode-design. TypingMind reads its SKILL.md and bundles its files and installs it as a skill you can enable per chat.

Which AI models can use Unity Netcode Design?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Unity Netcode Design?

As many as you like. As long as a model supports skills, you can use Unity Netcode Design with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Unity Netcode Design AI skill free?

Yes. It is published on GitHub by Besty0728 under the MIT license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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mattpocock

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Test-driven development. Use when the user wants to build features or fix bugs test-first, mentions "red-green-refactor", or wants integration tests.

To Spec

Turn the current conversation into a spec and publish it to the project issue tracker: no interview, just synthesis of what you've already discussed.

To Tickets

Break a plan, spec, or the current conversation into a set of tracer-bullet tickets, each declaring its blocking edges, published to the configured tracker (edges as text in one file per ticket…

Triage

Move issues and external PRs through a state machine of triage roles, categorise, verify, grill if needed, and write agent-ready briefs.

Overview

Installation

Install in TypingMind

Use it in TypingMind

Works with any AI model

Skill instructions

Triggers

Netcode for GameObjects - Design Rules

When to Load This Module

Critical Rule Summary (memorize even if you skip the sub-docs)

Sub-doc Routing

Routing to Other Modules

Version Scope

Bundled files

Frequently asked questions

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