Agent skill

Hd Wallets

by Nethereum in Nethereum/Nethereum

Derive multiple Ethereum accounts from a mnemonic seed phrase using Nethereum HD wallets.

MITAuto-check passedBackend & APIs

Install Hd Wallets

skills CLI
$ npx skills add Nethereum/Nethereum --skill hd-wallets -a claude-code

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

GitHub CLI
$ gh skill install Nethereum/Nethereum hd-wallets --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/hd-wallets .claude/skills/hd-wallets && 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/

Facts

Skill name
hd-wallets
GitHub stars
2.3k
Token cost
~664 tokens
SKILL.md length
80 words
Files
1
Skills in repo
71
Repo updated
First seen
Licence
MIT

At a glance

Derive multiple Ethereum accounts from a mnemonic seed phrase using Nethereum HD wallets.

  • The user asks about mnemonic phrases
  • SKILL.md covers Full HD Wallet (NBitcoin-based), Light HD Wallet (Zero… and When to Use Which
  • Calls dotnet
  • Deriving accounts from a seed

What it does

Hd Wallets is an agent skill from Nethereum/Nethereum. Derive multiple Ethereum accounts from a mnemonic seed phrase using Nethereum HD wallets. Use this skill whenever the user asks about mnemonic phrases, seed phrases, BIP-39, BIP-32, BIP-44, HD wallets, deriving accounts from a seed, wallet recovery, 12-word or 24-word phrases, derivation paths, or generating multiple addresses from one key in C/.NET.

Its SKILL.md is about 660 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. It works with .NET, C# and Ethereum. The repository describes itself as: Ethereum .Net cross platform integration library. The licence is MIT.

When your agent uses it

  • The user asks about mnemonic phrases
  • Deriving accounts from a seed
  • Wallet recovery
  • 24-word phrases

Example prompts

  • “/hd-wallets”

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

Hd Wallets loads about 664 tokens when it runs. Until then it costs about 91 tokens; SKILL.md has 80 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~91
When it runs · the whole SKILL.md, loaded when a task matches
~664

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). 80 words, ~664 tokens.

Download SKILL.mdSave it as .claude/skills/hd-wallets/SKILL.md (or your agent's skills folder).
name
hd-wallets
description
Derive multiple Ethereum accounts from a mnemonic seed phrase using Nethereum HD wallets. Use this skill whenever the user asks about mnemonic phrases, seed phrases, BIP-39, BIP-32, BIP-44, HD wallets, deriving accounts from a seed, wallet recovery, 12-word or 24-word phrases, derivation paths, or generating multiple addresses from one key in C#/.NET.
user-invocable
true

HD Wallets with Nethereum

Two implementations available:

Full HD Wallet (NBitcoin-based)

NuGet: Nethereum.HDWallet

bash
dotnet add package Nethereum.HDWallet
Generate New Wallet
csharp
using Nethereum.HdWallet;
using NBitcoin;

var wallet = new Wallet(Wordlist.English, WordCount.Twelve);
var mnemonic = string.Join(" ", wallet.Words);
Restore from Mnemonic
csharp
var wallet = new Wallet("rapid squeeze excess salute ...", seedPassword: null);
var account = wallet.GetAccount(0, chainId: 1);
var web3 = new Web3(account, "https://your-rpc-url");
Derivation Paths
csharp
// Default: m/44'/60'/0'/0/x (MetaMask, TREZOR, MEW)
var wallet = new Wallet(words, null, Wallet.DEFAULT_PATH);

// Ledger/Electrum: m/44'/60'/0'/x
var wallet = new Wallet(words, null, Wallet.ELECTRUM_LEDGER_PATH);
Key Methods
csharp
var addresses = wallet.GetAddresses(10);     // First 10 addresses
var privateKey = wallet.GetPrivateKey(0);     // Private key bytes
var ethKey = wallet.GetEthereumKey(0);        // EthECKey for signing
var account = wallet.GetAccount(0, chainId: 1); // Account for Web3
Watch-Only (Public Wallet)
csharp
var xPub = wallet.GetMasterExtPubKey();
var publicWallet = new PublicWallet(xPub);
var addresses = publicWallet.GetAddresses(10);

Light HD Wallet (Zero Dependencies)

Included in Nethereum.Accounts — no extra package needed. Uses only System.Security.Cryptography. Modern .NET only (net6.0+).

csharp
using Nethereum.Accounts.Bip32;

// Generate mnemonic
var mnemonic = Bip39.GenerateMnemonic(12);

// Create wallet
var wallet = new MinimalHDWallet(mnemonic);

// Derive keys (m/44'/60'/0'/0/{index})
var key = wallet.GetEthereumKey(0);
var address = wallet.GetEthereumAddress(0);

// Custom path
var key = wallet.GetKeyFromPath("m/44'/60'/0'/0/5");

When to Use Which

FeatureNethereum.HDWalletMinimalHDWallet
DependenciesNBitcoinNone
Frameworksnet452+net6.0+
Extended keys (xPub)YesNo
Key cachingYesNo
Best forFull wallet appsEmbedded, mobile, WASM

For full documentation, see: https://docs.nethereum.com/docs/signing-and-key-management/guide-hd-wallets

© Nethereum, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in plugins/nethereum-skills/skills/hd-wallets of Nethereum/Nethereum.

Open the folder on GitHubat commit 229f278

Compare with similar skills

Hd Wallets 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.

Hd Wallets compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Hd Wallets this skillNethereum/Nethereum2.3k—~664Automated safety check: PassMIT
.NET API Compatibility DesignAaronontheweb/dotnet-skills1.2k2 repos~2.7kAutomated safety check: PassMIT
Tsp Csharpquerylenshq/ef-querylens225—~1.3kAutomated safety check: PassMIT
XML DocumentationVonage/vonage-dotnet-sdk118—~2.7kAutomated safety check: PassApache-2.0
Dotnet 10 Csharp 14sketch7/FluentlyHttpClient121—~2.2kAutomated safety check: PassMIT
DisCatSharp Discord DevelopmentAiko-IT-Systems/DisCatSharp140—~1.2kAutomated safety check: PassMIT

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Works with

Categories

Questions about Hd Wallets

What does Hd Wallets do?

Derive multiple Ethereum accounts from a mnemonic seed phrase using Nethereum HD wallets. Hd Wallets is an agent skill from Nethereum/Nethereum. Derive multiple Ethereum accounts from a mnemonic seed phrase using Nethereum HD wallets.

When should I use Hd Wallets?

Hd Wallets fits situations like: the user asks about mnemonic phrases; deriving accounts from a seed; wallet recovery; 24-word phrases.

How do I install Hd Wallets in Claude Code?

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

How do I install Hd Wallets in Codex?

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

Can I use Hd Wallets 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 hd-wallets -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/hd-wallets, .gemini/skills/hd-wallets, .github/skills/hd-wallets and .opencode/skills/hd-wallets in your project.

What does Hd Wallets need to run?

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

Does Hd Wallets 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 Hd Wallets 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 Hd Wallets use?

Hd Wallets 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 Hd Wallets use?

About 664 tokens (SKILL.md is roughly 2.7k 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 Hd Wallets?

Skills that share tags, products or a category with Hd Wallets: .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 Hd Wallets?

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.