Agent skill

Hardware Wallets

Sign Ethereum transactions with Ledger and Trezor hardware wallets using Nethereum.

Install Hardware Wallets

skills CLI

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

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

GitHub CLI

$ gh skill install Nethereum/Nethereum hardware-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/hardware-wallets .claude/skills/hardware-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/

Paste into Claude Code

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

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 hardware-wallets -a codex

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

GitHub CLI

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

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

GitHub CLI

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

--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 hardware-wallets -a gemini-cli

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

GitHub CLI

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

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 hardware-wallets -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/hardware-wallets .github/skills/hardware-wallets && 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 "hardware-wallets" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/hardware-wallets into .github/skills/hardware-wallets/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hardware-wallets", 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 hardware-wallets -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 hardware-wallets --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/hardware-wallets .opencode/skills/hardware-wallets && 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 "hardware-wallets" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/hardware-wallets into .opencode/skills/hardware-wallets/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "hardware-wallets", 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: hardware-wallets
GitHub stars: 2.3k
Token cost: ~700 tokens
SKILL.md length: 65 words
Files: 1
Skills in repo: 71
Repo updated: Oct 5, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Sign Ethereum transactions with Ledger and Trezor hardware wallets using Nethereum.

The user asks about Ledger signing
SKILL.md covers Ledger, Trezor and Comparison
Calls dotnet
Hardware wallet integration

What it does

Hardware Wallets is an agent skill from Nethereum/Nethereum. Sign Ethereum transactions with Ledger and Trezor hardware wallets using Nethereum. Use this skill whenever the user asks about Ledger signing, Trezor signing, hardware wallet integration, HSM device signing, external signers, or hardware security modules for Ethereum in C/.NET.

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 Backend & APIs. It works with Ethereum, C# and .NET. The repository describes itself as: Ethereum .Net cross platform integration library. The licence is MIT.

When your agent uses it

The user asks about Ledger signing
Hardware wallet integration
HSM device signing
External signers

Example prompts

“/hardware-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

Hardware Wallets loads about 700 tokens when it runs. Until then it costs about 74 tokens; SKILL.md has 65 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~74
When it runs · the whole SKILL.md, loaded when a task matches: ~700

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). 65 words, ~700 tokens.

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

name: hardware-wallets
description: Sign Ethereum transactions with Ledger and Trezor hardware wallets using Nethereum. Use this skill whenever the user asks about Ledger signing, Trezor signing, hardware wallet integration, HSM device signing, external signers, or hardware security modules for Ethereum in C#/.NET.
user-invocable: true

Hardware Wallets with Nethereum

Private key never leaves the device. Both use the ExternalAccount pattern.

Ledger

NuGet: Nethereum.Signer.Ledger

bash

dotnet add package Nethereum.Signer.Ledger

csharp

using Nethereum.Ledger;
using Nethereum.Web3;
using Nethereum.Web3.Accounts;

var ledgerManagerFactory = new NethereumLedgerManagerBrokerFactory();
var signer = new LedgerExternalSigner(ledgerManagerFactory, accountIndex: 0);

var externalAccount = new ExternalAccount(signer, chainId: 1);
await externalAccount.InitialiseAsync();

var web3 = new Web3(externalAccount, "https://your-rpc-url");

// Send transaction (same API as regular Account)
var receipt = await web3.Eth.GetEtherTransferService()
    .TransferEtherAndWaitForReceiptAsync(toAddress, 0.1m);

Legacy Path (Electrum/Ledger)

csharp

var signer = new LedgerExternalSigner(ledgerManagerFactory, accountIndex: 0, legacyPath: true);
// Uses m/44'/60'/0'/x instead of m/44'/60'/0'/0/x

Trezor

NuGet: Nethereum.Signer.Trezor

bash

dotnet add package Nethereum.Signer.Trezor

Requires a PIN prompt handler:

csharp

using Nethereum.Trezor;
using Nethereum.Web3;
using Nethereum.Web3.Accounts;

public class ConsolePinHandler : ITrezorPromptHandler
{
    public Task<string> PromptPin()
    {
        Console.Write("Enter PIN (numpad positions): ");
        return Task.FromResult(Console.ReadLine());
    }

    public Task<string> PromptPassphrase()
    {
        Console.Write("Enter passphrase (or empty): ");
        return Task.FromResult(Console.ReadLine());
    }
}

var pinHandler = new ConsolePinHandler();
var trezorManagerFactory = new NethereumTrezorManagerBrokerFactory();
var signer = new TrezorExternalSigner(trezorManagerFactory, pinHandler, accountIndex: 0);

var externalAccount = new ExternalAccount(signer, chainId: 1);
await externalAccount.InitialiseAsync();

var web3 = new Web3(externalAccount, "https://your-rpc-url");

Personal Message Signing (Trezor only)

csharp

var signature = await signer.SignAsync(
    System.Text.Encoding.UTF8.GetBytes("Hello Ethereum!"));

Comparison

Feature	Ledger	Trezor
EIP-712 signing	No	Yes
Personal message signing	No	Yes
PIN entry	On device	Via handler
Passphrase (25th word)	On device	Via handler

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

Files

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

Open the folder on GitHubat commit 229f278

Compare with similar skills

Hardware 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.

Hardware Wallets compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Hardware Wallets this skillNethereum/Nethereum	2.3k	—	~700	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 Hardware Wallets

What does Hardware Wallets do?

Sign Ethereum transactions with Ledger and Trezor hardware wallets using Nethereum. Hardware Wallets is an agent skill from Nethereum/Nethereum. Sign Ethereum transactions with Ledger and Trezor hardware wallets using Nethereum.

When should I use Hardware Wallets?

Hardware Wallets fits situations like: the user asks about Ledger signing; hardware wallet integration; HSM device signing; external signers.

How do I install Hardware Wallets in Claude Code?

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

How do I install Hardware Wallets in Codex?

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

Can I use Hardware 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 hardware-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/hardware-wallets, .gemini/skills/hardware-wallets, .github/skills/hardware-wallets and .opencode/skills/hardware-wallets in your project.

What does Hardware Wallets need to run?

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

Does Hardware 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 Hardware 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 Hardware Wallets use?

Hardware 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 Hardware Wallets use?

About 700 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 Hardware Wallets?

Skills that share tags, products or a category with Hardware 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 Hardware 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.

Install Hardware Wallets

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

Hardware Wallets with Nethereum

Ledger

Legacy Path (Electrum/Ledger)

Trezor

Personal Message Signing (Trezor only)

Comparison

Files

Compare with similar skills

Similar skills

More from Nethereum/Nethereum

Related

Questions about Hardware Wallets