Agent skill

Mud Quickstart

Help users build MUD applications with Nethereum — define tables, generate C code, interact with World contracts, use the namespace pattern.

MITAuto-check passedBackend & APIs

Install Mud Quickstart

skills CLI

$ npx skills add Nethereum/Nethereum --skill mud-quickstart -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install Nethereum/Nethereum mud-quickstart --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/nethereum-skills/skills/mud-quickstart .claude/skills/mud-quickstart && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "mud-quickstart" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/mud-quickstart into .claude/skills/mud-quickstart/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mud-quickstart", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/mud-quickstart

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add Nethereum/Nethereum --skill mud-quickstart -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install Nethereum/Nethereum mud-quickstart --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/nethereum-skills/skills/mud-quickstart .agents/skills/mud-quickstart && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "mud-quickstart" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/mud-quickstart into .agents/skills/mud-quickstart/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mud-quickstart", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Nethereum/Nethereum --skill mud-quickstart -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install Nethereum/Nethereum mud-quickstart --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/nethereum-skills/skills/mud-quickstart .cursor/skills/mud-quickstart && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "mud-quickstart" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/mud-quickstart into .cursor/skills/mud-quickstart/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mud-quickstart", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/Nethereum/Nethereum.git --path plugins/nethereum-skills/skills/mud-quickstart

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add Nethereum/Nethereum --skill mud-quickstart -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install Nethereum/Nethereum mud-quickstart --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/nethereum-skills/skills/mud-quickstart .gemini/skills/mud-quickstart && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "mud-quickstart" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/mud-quickstart into .gemini/skills/mud-quickstart/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mud-quickstart", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install Nethereum/Nethereum mud-quickstart

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add Nethereum/Nethereum --skill mud-quickstart -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/nethereum-skills/skills/mud-quickstart .github/skills/mud-quickstart && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "mud-quickstart" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/mud-quickstart into .github/skills/mud-quickstart/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mud-quickstart", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Nethereum/Nethereum --skill mud-quickstart -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install Nethereum/Nethereum mud-quickstart --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Nethereum/Nethereum.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/nethereum-skills/skills/mud-quickstart .opencode/skills/mud-quickstart && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "mud-quickstart" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/mud-quickstart into .opencode/skills/mud-quickstart/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mud-quickstart", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: mud-quickstart
GitHub stars: 2.3k
Token cost: ~952 tokens
SKILL.md length: 228 words
Files: 1
Skills in repo: 71
Repo updated: Oct 5, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Help users build MUD applications with Nethereum — define tables, generate C code, interact with World contracts, use the namespace pattern.

Works in 4 steps: Define tables in mud.config.ts using… → Compile contracts with Forge → Create .nethereum-gen.multisettings → …
Users mention MUD
SKILL.md covers When to Use This Skill, Required Packages, Code Generation Workflow and Using Generated Services, plus 2 more sections
Calls dotnet

What it does

Mud Quickstart is an agent skill from Nethereum/Nethereum. Help users build MUD applications with Nethereum — define tables, generate C code, interact with World contracts, use the namespace pattern. Use when users mention MUD, autonomous worlds, on-chain structured data, MUD tables, MUD systems, defineWorld, World contract, or any MUD-related development with C or .NET.

Its SKILL.md is about 950 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Backend & APIs, covering Smart contracts and Schema markup. It works with C# and .NET. The repository describes itself as: Ethereum .Net cross platform integration library. The licence is MIT.

When your agent uses it

Users mention MUD
Autonomous worlds
On-chain structured data
Any MUD-related development with C

Example prompts

“/mud-quickstart”

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

Define tables in mud.config.ts using defineWorld() at mud.dev
Compile contracts with Forge
Create .nethereum-gen.multisettings
Run: Nethereum.Generator.Console generate from-config

What it can do on your machine

Read from SKILL.md and the folder at commit 229f278. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
- dotnet
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
- mud.dev
- github.com
- docs.nethereum.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Mud Quickstart loads about 952 tokens when it runs. Until then it costs about 83 tokens; SKILL.md has 228 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~83
When it runs · the whole SKILL.md, loaded when a task matches: ~952

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from Nethereum/Nethereum at commit 229f278, republished under its MIT licence (© Nethereum). 228 words, ~952 tokens.

Download SKILL.mdSave it as .claude/skills/mud-quickstart/SKILL.md (or your agent's skills folder).

name: mud-quickstart
description: Help users build MUD applications with Nethereum — define tables, generate C# code, interact with World contracts, use the namespace pattern. Use when users mention MUD, autonomous worlds, on-chain structured data, MUD tables, MUD systems, defineWorld, World contract, or any MUD-related development with C# or .NET.
user-invocable: true

MUD Quickstart with Nethereum

MUD is an enhanced EIP-2535 Diamond pattern for building complex smart contract applications. A World contract acts as a diamond proxy — routing calls to system contracts via delegatecall, with all state stored in typed tables. Namespaces group systems and tables into a unified context (like web3.Eth). It's not just for games — any application with complex structured on-chain state benefits.

When to Use This Skill

User wants to build a MUD application with .NET/C#
User needs to generate C# code from MUD table definitions
User is working with MUD World contracts, tables, or systems
User mentions defineWorld, mud.config.ts, or MUD namespaces

Required Packages

bash

dotnet add package Nethereum.Mud
dotnet add package Nethereum.Mud.Contracts

For code generation CLI:

bash

dotnet tool install -g Nethereum.Generator.Console

Code Generation Workflow

Define tables in mud.config.ts using defineWorld() at mud.dev
Compile contracts with Forge
Create .nethereum-gen.multisettings:

json

[
  {
    "paths": ["path/to/mud.config.ts"],
    "generatorConfigs": [
      {
        "baseNamespace": "MyProject.Contracts",
        "basePath": "Generated/Tables",
        "codeGenLang": 0,
        "generatorType": "MudTables"
      }
    ]
  }
]

Run: Nethereum.Generator.Console generate from-config

Generator types:

MudTables — generates TableRecord and TableService from mud.config.ts
MudExtendedService — generates system service wrappers from compiled JSON
ContractDefinition — standard ABI-to-C# (non-MUD contracts)

Using Generated Services

csharp

var playerService = new PlayerTableService(web3, worldAddress);

// Read
var player = await playerService.GetTableRecordAsync(
    new PlayerTableRecord.PlayerKey { Address = addr });

// Write
await playerService.SetRecordRequestAndWaitForReceiptAsync(
    new PlayerTableRecord.PlayerKey { Address = addr },
    new PlayerTableRecord.PlayerValue { Score = 100, Name = "Alice" });

// Delete
await playerService.DeleteRecordRequestAndWaitForReceiptAsync(
    new PlayerTableRecord.PlayerKey { Address = addr });

Namespace Pattern (Production)

Aggregate generated services into namespace classes:

csharp

public class AppNamespace : NamespaceBase<AppResource, AppSystems, AppTables>
{
    public AppNamespace(IWeb3 web3, string contractAddress) : base(web3, contractAddress)
    {
        Systems = new AppSystems(web3, contractAddress);
        Tables = new AppTables(web3, contractAddress);
    }
}

// Usage
var app = new AppNamespace(web3, worldAddress);
var player = await app.Tables.Player.GetTableRecordAsync(key);

See CafeCosmos for a production example with 35+ tables.

Key Classes

Class	Purpose
`TableRecord<TKey, TValue>`	Base for keyed table records
`TableRecordSingleton<TValue>`	Base for singleton table records (key: [])
`TableService<TRecord, TKey, TValue>`	Typed CRUD for keyed tables
`TableSingletonService<TRecord, TValue>`	Typed CRUD for singleton tables
`ResourceEncoder`	Encode table/system/namespace resource IDs
`NamespaceBase<TResource, TSystems, TTables>`	Base for namespace aggregation

For full documentation, see: https://docs.nethereum.com/docs/mud-framework/guide-mud-quickstart

Files

Just SKILL.md in plugins/nethereum-skills/skills/mud-quickstart of Nethereum/Nethereum.

Open the folder on GitHubat commit 229f278

Compare with similar skills

Mud Quickstart next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Mud Quickstart compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Mud Quickstart this skillNethereum/Nethereum	2.3k	—	~952	Automated safety check: Pass	MIT	2 days ago
.NET API Compatibility DesignAaronontheweb/dotnet-skills	1.2k	2 repos	~2.7k	Automated safety check: Pass	MIT	19 days ago
Tsp Csharpquerylenshq/ef-querylens	225	—	~1.3k	Automated safety check: Pass	MIT	1 mo ago
XML DocumentationVonage/vonage-dotnet-sdk	118	—	~2.7k	Automated safety check: Pass	Apache-2.0	3 mo ago
Dotnet 10 Csharp 14sketch7/FluentlyHttpClient	121	—	~2.2k	Automated safety check: Pass	MIT	19 days ago
DisCatSharp Discord DevelopmentAiko-IT-Systems/DisCatSharp	140	—	~1.2k	Automated safety check: Pass	MIT	2 days ago

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Works with

Questions about Mud Quickstart

What does Mud Quickstart do?

Help users build MUD applications with Nethereum — define tables, generate C code, interact with World contracts, use the namespace pattern. Mud Quickstart is an agent skill from Nethereum/Nethereum. Help users build MUD applications with Nethereum — define tables, generate C code, interact with World contracts, use the namespace pattern.

When should I use Mud Quickstart?

Mud Quickstart fits situations like: users mention MUD; autonomous worlds; on-chain structured data; any MUD-related development with C.

How do I install Mud Quickstart in Claude Code?

Run `npx skills add Nethereum/Nethereum --skill mud-quickstart -a claude-code`. Or copy the skill folder (plugins/nethereum-skills/skills/mud-quickstart in Nethereum/Nethereum) into .claude/skills/mud-quickstart in your project. Claude Code loads it when a task matches its description.

How do I install Mud Quickstart in Codex?

Run `npx skills add Nethereum/Nethereum --skill mud-quickstart -a codex`. Or copy the skill folder (plugins/nethereum-skills/skills/mud-quickstart in Nethereum/Nethereum) into .agents/skills/mud-quickstart in your project. Codex loads it when a task matches its description.

Can I use Mud Quickstart in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Nethereum/Nethereum --skill mud-quickstart -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/mud-quickstart, .gemini/skills/mud-quickstart, .github/skills/mud-quickstart and .opencode/skills/mud-quickstart in your project.

What does Mud Quickstart need to run?

Going by SKILL.md and its folder, Mud Quickstart needs the command-line tools its instructions call (dotnet).

Does Mud Quickstart access the network?

SKILL.md names 3 domains. As links in the text: mud.dev, github.com and docs.nethereum.com. This is read from the text; nothing was executed.

Is Mud Quickstart safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Mud Quickstart use?

Mud Quickstart is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Mud Quickstart use?

About 952 tokens (SKILL.md is roughly 3.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Mud Quickstart?

Skills that share tags, products or a category with Mud Quickstart: .NET API Compatibility Design (Aaronontheweb/dotnet-skills, 1.2k stars), Tsp Csharp (querylenshq/ef-querylens, 225 stars), XML Documentation (Vonage/vonage-dotnet-sdk, 118 stars) and Dotnet 10 Csharp 14 (sketch7/FluentlyHttpClient, 121 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Mud Quickstart?

Nethereum (a GitHub organization) maintains it in Nethereum/Nethereum, which has 2,260 GitHub stars. The repository holds 71 skills in this directory. The repository was last updated on October 5, 2026.

Source: Nethereum/Nethereum on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Mud Quickstart

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

MUD Quickstart with Nethereum

When to Use This Skill

Required Packages

Code Generation Workflow

Using Generated Services

Namespace Pattern (Production)

Key Classes

Files

Compare with similar skills

Similar skills

More from Nethereum/Nethereum

Related

Questions about Mud Quickstart