Agent skill

Mud Indexing

Help users index MUD Store events, process on-chain table mutations, store in PostgreSQL or EF Core, normalise schemas, run continuous sync.

MITAuto-check passedDatabases

Install Mud Indexing

skills CLI

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

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

GitHub CLI

$ gh skill install Nethereum/Nethereum mud-indexing --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-indexing .claude/skills/mud-indexing && 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-indexing" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/mud-indexing into .claude/skills/mud-indexing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mud-indexing", 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-indexing

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-indexing -a codex

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

GitHub CLI

$ gh skill install Nethereum/Nethereum mud-indexing --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-indexing .agents/skills/mud-indexing && 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-indexing" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/mud-indexing into .agents/skills/mud-indexing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mud-indexing", 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-indexing -a cursor

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

GitHub CLI

$ gh skill install Nethereum/Nethereum mud-indexing --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-indexing .cursor/skills/mud-indexing && 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-indexing" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/mud-indexing into .cursor/skills/mud-indexing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mud-indexing", 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-indexing

--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-indexing -a gemini-cli

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

GitHub CLI

$ gh skill install Nethereum/Nethereum mud-indexing --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-indexing .gemini/skills/mud-indexing && 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-indexing" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/mud-indexing into .gemini/skills/mud-indexing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mud-indexing", 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-indexing

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-indexing -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-indexing .github/skills/mud-indexing && 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-indexing" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/mud-indexing into .github/skills/mud-indexing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mud-indexing", 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-indexing -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-indexing --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-indexing .opencode/skills/mud-indexing && 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-indexing" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/mud-indexing into .opencode/skills/mud-indexing/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mud-indexing", 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-indexing
GitHub stars: 2.3k
Token cost: ~702 tokens
SKILL.md length: 126 words
Files: 1
Skills in repo: 71
Repo updated: Oct 5, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Help users index MUD Store events, process on-chain table mutations, store in PostgreSQL or EF Core, normalise schemas, run continuous sync.

Users mention MUD indexing
SKILL.md covers When to Use This Skill, Required Packages, Quick Start: In-Memory and PostgreSQL Normalisation, plus 4 more sections
Calls dotnet
StoreEventsLogProcessingService

What it does

Mud Indexing is an agent skill from Nethereum/Nethereum. Help users index MUD Store events, process on-chain table mutations, store in PostgreSQL or EF Core, normalise schemas, run continuous sync. Use when users mention MUD indexing, Store events, MUD PostgreSQL, MUD EF Core, StoreEventsLogProcessingService, or building an indexer for MUD World data.

Its SKILL.md is about 700 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 Databases, covering Smart contracts. It works with PostgreSQL. The repository describes itself as: Ethereum .Net cross platform integration library. The licence is MIT.

When your agent uses it

Users mention MUD indexing
StoreEventsLogProcessingService
Building an indexer for MUD World data

Example prompts

“/mud-indexing”

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):
- 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 Indexing loads about 702 tokens when it runs. Until then it costs about 77 tokens; SKILL.md has 126 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~77
When it runs · the whole SKILL.md, loaded when a task matches: ~702

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). 126 words, ~702 tokens.

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

name: mud-indexing
description: Help users index MUD Store events, process on-chain table mutations, store in PostgreSQL or EF Core, normalise schemas, run continuous sync. Use when users mention MUD indexing, Store events, MUD PostgreSQL, MUD EF Core, StoreEventsLogProcessingService, or building an indexer for MUD World data.
user-invocable: true

MUD Store Event Indexing with Nethereum

Every MUD table mutation emits a Store event. By processing these events, you can rebuild the complete state of any MUD World and store it in PostgreSQL with typed relational tables.

When to Use This Skill

User wants to index MUD World state off-chain
User needs to process Store events into a database
User wants PostgreSQL tables mirroring MUD schemas
User mentions StoreEventsLogProcessingService, MUD normalisation, or MUD repositories

Required Packages

bash

dotnet add package Nethereum.Mud.Contracts

# For PostgreSQL normalisation:
dotnet add package Nethereum.Mud.Repositories.Postgres

# For EF Core (any database):
dotnet add package Nethereum.Mud.Repositories.EntityFramework

Quick Start: In-Memory

csharp

var storeEventsService = new StoreEventsLogProcessingService(web3, worldAddress);
var repository = new InMemoryTableRepository();
await storeEventsService.ProcessAllStoreChangesAsync(repository);
// repository now contains full current state

PostgreSQL Normalisation

csharp

var normaliser = new MudPostgresStoreRecordsNormaliser(connectionString, worldAddress);
await normaliser.UpsertAsync(repository);

Creates typed PostgreSQL tables: {namespace}__{tableName} with proper column types.

Query Normalised Tables

csharp

var queryService = new NormalisedTableQueryService(connectionString);
var tables = await queryService.GetAvailableTablesAsync();
var results = await queryService.QueryAsync("app__Player", limit: 100);
var count = await queryService.CountAsync("app__Player");

Continuous Sync

csharp

var processor = storeEventsService.CreateProcessor(
    repository,
    blockProgressRepository: new InMemoryBlockchainProgressRepository(),
    numberOfBlocksPerRequest: 1000);

await processor.ExecuteAsync(cancellationToken);

Processing from Transaction Receipt

csharp

var receipt = await playerService.SetRecordRequestAndWaitForReceiptAsync(key, value);
await StoreEventsLogProcessingService.ProcessAllStoreChangesFromLogs(repository, receipt);

Storage Decision Table

Strategy	Best For
`InMemoryTableRepository`	Development, testing
`MudEFCoreTableRepository`	Any EF Core database, simple persistence
PostgreSQL normalisation	Production, analytics, explorer UIs

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

Files

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

Open the folder on GitHubat commit 229f278

Compare with similar skills

Mud Indexing 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 Indexing compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Mud Indexing this skillNethereum/Nethereum	2.3k	—	~702	Automated safety check: Pass	MIT	3 days ago
Backend Test WorkerCorrectRoadH/OpenTickly	306	—	~1.3k	Automated safety check: Pass	AGPL-3.0	6 days ago
Ef Core Migrationsjihadkhawaja/Egroo	178	—	~673	Automated safety check: Pass	Apache-2.0	6 mo ago
Add Oliphaunt Extensionf0rr0/oliphaunt	105	—	~1.4k	Automated safety check: Pass	MIT	today
Diagnose Cloud SessionFreakStudioCN/mpy-hardware-extension	132	—	~809	Automated safety check: Notes	Custom licence	10 days ago
DB AdminEliasOulkadi/shokunin	114	—	~2k	Automated safety check: Notes	MIT	3 days ago

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Works with

PostgreSQL

Questions about Mud Indexing

What does Mud Indexing do?

Help users index MUD Store events, process on-chain table mutations, store in PostgreSQL or EF Core, normalise schemas, run continuous sync. Mud Indexing is an agent skill from Nethereum/Nethereum. Help users index MUD Store events, process on-chain table mutations, store in PostgreSQL or EF Core, normalise schemas, run continuous sync.

When should I use Mud Indexing?

Mud Indexing fits situations like: users mention MUD indexing; storeEventsLogProcessingService; building an indexer for MUD World data.

How do I install Mud Indexing in Claude Code?

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

How do I install Mud Indexing in Codex?

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

Can I use Mud Indexing 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-indexing -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-indexing, .gemini/skills/mud-indexing, .github/skills/mud-indexing and .opencode/skills/mud-indexing in your project.

What does Mud Indexing need to run?

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

Does Mud Indexing access the network?

SKILL.md names 1 domain. As links in the text: docs.nethereum.com. This is read from the text; nothing was executed.

Is Mud Indexing 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 Indexing use?

Mud Indexing 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 Indexing use?

About 702 tokens (SKILL.md is roughly 2.8k 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 Indexing?

Skills that share tags, products or a category with Mud Indexing: Backend Test Worker (CorrectRoadH/OpenTickly, 306 stars), Ef Core Migrations (jihadkhawaja/Egroo, 178 stars), Add Oliphaunt Extension (f0rr0/oliphaunt, 105 stars) and Diagnose Cloud Session (FreakStudioCN/mpy-hardware-extension, 132 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Mud Indexing?

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 Indexing

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

MUD Store Event Indexing with Nethereum

When to Use This Skill

Required Packages

Quick Start: In-Memory

PostgreSQL Normalisation

Query Normalised Tables

Continuous Sync

Processing from Transaction Receipt

Storage Decision Table

Files

Compare with similar skills

Similar skills

More from Nethereum/Nethereum

Related

Questions about Mud Indexing