Agent skill

Cloud Kms

Sign Ethereum transactions with AWS KMS or Azure Key Vault HSMs using Nethereum.

Install Cloud Kms

skills CLI

$ npx skills add Nethereum/Nethereum --skill cloud-kms -a claude-code

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

GitHub CLI

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

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 cloud-kms -a codex

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

GitHub CLI

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

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

GitHub CLI

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

--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 cloud-kms -a gemini-cli

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

GitHub CLI

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

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 cloud-kms -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/cloud-kms .github/skills/cloud-kms && 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 "cloud-kms" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/cloud-kms into .github/skills/cloud-kms/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cloud-kms", 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 cloud-kms -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 cloud-kms --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/cloud-kms .opencode/skills/cloud-kms && 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 "cloud-kms" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/cloud-kms into .opencode/skills/cloud-kms/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cloud-kms", 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: cloud-kms
GitHub stars: 2.3k
Token cost: ~738 tokens
SKILL.md length: 46 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 AWS KMS or Azure Key Vault HSMs using Nethereum.

The user asks about AWS KMS Ethereum signing
SKILL.md covers AWS KMS and Azure Key Vault
Calls dotnet, aws and az
Azure Key Vault signing

What it does

Cloud Kms is an agent skill from Nethereum/Nethereum. Sign Ethereum transactions with AWS KMS or Azure Key Vault HSMs using Nethereum. Use this skill whenever the user asks about AWS KMS Ethereum signing, Azure Key Vault signing, cloud HSM, managed key signing, serverless wallet, key management service, or cloud-based transaction signing in C/.NET.

Its SKILL.md is about 740 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 Serverless and Cryptography. It works with Amazon Web Services, Azure Key Vault, Ethereum and C#. The repository describes itself as: Ethereum .Net cross platform integration library. The licence is MIT.

When your agent uses it

The user asks about AWS KMS Ethereum signing
Azure Key Vault signing
Managed key signing
Serverless wallet

Example prompts

“/cloud-kms”

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
- aws
- az
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

Cloud Kms loads about 738 tokens when it runs. Until then it costs about 77 tokens; SKILL.md has 46 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: ~738

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). 46 words, ~738 tokens.

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

name: cloud-kms
description: Sign Ethereum transactions with AWS KMS or Azure Key Vault HSMs using Nethereum. Use this skill whenever the user asks about AWS KMS Ethereum signing, Azure Key Vault signing, cloud HSM, managed key signing, serverless wallet, key management service, or cloud-based transaction signing in C#/.NET.
user-invocable: true

Cloud KMS Signing with Nethereum

Private key generated inside HSM, never exported. Both support Legacy, EIP-1559, EIP-2930, and EIP-7702 transactions.

AWS KMS

NuGet: Nethereum.Signer.AWSKeyManagement

bash

dotnet add package Nethereum.Signer.AWSKeyManagement

Create Key

bash

aws kms create-key --key-spec ECC_SECG_P256K1 --key-usage SIGN_VERIFY

Sign Transactions

csharp

using Nethereum.Signer.AWSKeyManagement;
using Nethereum.Web3;
using Nethereum.Web3.Accounts;

// Uses default AWS credentials chain
var signer = new AWSKeyManagementExternalSigner(keyId: "your-kms-key-id");

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

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

var receipt = await web3.Eth.GetEtherTransferService()
    .TransferEtherAndWaitForReceiptAsync(toAddress, 0.1m);

Auth Methods

csharp

// Default credentials (Lambda, ECS, EC2)
var signer = new AWSKeyManagementExternalSigner(keyId);

// Explicit credentials
var signer = new AWSKeyManagementExternalSigner(
    keyId, accessKeyId: "AKIA...", secretAccessKey: "...");

// Specific region
var signer = new AWSKeyManagementExternalSigner(
    keyId, region: Amazon.RegionEndpoint.EUWest1);

Azure Key Vault

NuGet: Nethereum.Signer.AzureKeyVault

bash

dotnet add package Nethereum.Signer.AzureKeyVault

Create Key

bash

az keyvault key create --vault-name my-vault --name ethereum-key --kty EC --curve SECP256K1

Sign Transactions

csharp

using Nethereum.Signer.AzureKeyVault;
using Nethereum.Web3;
using Nethereum.Web3.Accounts;
using Azure.Identity;

var signer = new AzureKeyVaultExternalSigner(
    keyIdentifier: "https://my-vault.vault.azure.net/keys/ethereum-key");

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

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

var receipt = await web3.Eth.GetEtherTransferService()
    .TransferEtherAndWaitForReceiptAsync(toAddress, 0.1m);

Auth Methods

csharp

// DefaultAzureCredential (auto-detect)
var signer = new AzureKeyVaultExternalSigner(keyIdentifier);

// Managed identity
var signer = new AzureKeyVaultExternalSigner(
    keyIdentifier, new ManagedIdentityCredential());

// Service principal
var signer = new AzureKeyVaultExternalSigner(
    keyIdentifier, new ClientSecretCredential(tenantId, clientId, clientSecret));

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

Files

Just SKILL.md in plugins/nethereum-skills/skills/cloud-kms of Nethereum/Nethereum.

Open the folder on GitHubat commit 229f278

Compare with similar skills

Cloud Kms 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.

Cloud Kms compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Cloud Kms this skillNethereum/Nethereum	2.3k	—	~738	Automated safety check: Pass	MIT	2 days ago
Migrate Dotnet9 To Dotnet10dotnet/skills	5.6k	2 repos	~4.8k	Automated safety check: Pass	MIT	today
Azure Security Keyvault Keys Dotnetmicrosoft/skills	3.1k	5 repos	~3.1k	Automated safety check: Pass	MIT	yesterday
AWS Serverless Edazxkane/aws-skills	367	4 repos	~3.2k	Automated safety check: Pass	MIT	3 mo ago
FoundatioFoundatioFx/Foundatio	2.1k	—	~3.9k	Automated safety check: Pass	Apache-2.0	today
.NET API Compatibility DesignAaronontheweb/dotnet-skills	1.2k	2 repos	~2.7k	Automated safety check: Pass	MIT	19 days ago

Similar skills

Migrate Dotnet9 To Dotnet10
dotnet/skills
Official
Migrate a .NET 9 project or solution to .NET 10 and resolve all breaking changes.
5.6k GitHub starsUsed in 2 repos~4.8k tokens
DevOps & CloudAuto-check passed
Azure Security Keyvault Keys Dotnet
microsoft/skills
Official
Azure Key Vault Keys SDK for .NET. An agent skill from microsoft/skills.
3.1k GitHub starsUsed in 5 repos~3.1k tokens
SecurityAuto-check passed
AWS Serverless Eda
zxkane/aws-skills
AWS serverless and event-driven architecture expert based on Well-Architected Framework.
367 GitHub starsUsed in 4 repos~3.2k tokens
Backend & APIsAuto-check passed
Foundatio
FoundatioFx/Foundatio
A skill your agent uses when working with Foundatio infrastructure abstractions for .NET -- caching, queuing, messaging, file storage, distributed locking, or background jobs.
2.1k GitHub stars~3.9k tokensUpdated today
Backend & APIsAuto-check passed
.NET API Compatibility Design
Aaronontheweb/dotnet-skills
Applies extend-only design rules to NuGet packages and distributed systems, covering source, binary and wire compatibility and how to deprecate members safely.
1.2k GitHub starsUsed in 2 repos~2.7k tokens
Backend & APIsAuto-check passed
Tsp Csharp
querylenshq/ef-querylens
Comprehensive C and .NET development skill for TSP projects.
225 GitHub stars~1.3k tokensUpdated 1 mo ago
Backend & APIsAuto-check passed

More from Nethereum/Nethereum

All 71 skills in this repo

Aa Batching Paymasters
Nethereum/Nethereum
Help users batch multiple calls into a single UserOperation and sponsor gas with paymasters using Nethereum Account Abstraction.
2.3k GitHub stars~1.5k tokensUpdated 2 days ago
Auto-check passed
Aa Bundler
Nethereum/Nethereum
Help users run an ERC-4337 bundler using Nethereum — set up in-process or standalone bundlers with mempool, validation, reputation, and JSON-RPC server.
2.3k GitHub stars~1.2k tokensUpdated 2 days ago
Auto-check passed
Abi Encoding
Nethereum/Nethereum
Encode and decode Ethereum ABI data with Nethereum. An agent skill from Nethereum/Nethereum.
2.3k GitHub stars~1.3k tokensUpdated 2 days ago
Auto-check passed
Abi Retrieval
Nethereum/Nethereum
Fetch contract ABIs from Sourcify, Etherscan, and 4Byte Directory using the composite ABIInfoStorage pattern (.NET/C).
2.3k GitHub stars~1.5k tokensUpdated 2 days ago
Auto-check passed
Account Abstraction
Nethereum/Nethereum
Help users implement ERC-4337 Account Abstraction with Nethereum — send UserOperations, use smart accounts, route contract calls through a bundler, enable gasless transactions, or work with AA in…
2.3k GitHub stars~1.7k tokensUpdated 2 days ago
Auto-check passed
Address Utils
Nethereum/Nethereum
Validate and format Ethereum addresses with Nethereum. An agent skill from Nethereum/Nethereum.
2.3k GitHub stars~1.2k tokensUpdated 2 days ago
Auto-check passed

Works with

Questions about Cloud Kms

What does Cloud Kms do?

Sign Ethereum transactions with AWS KMS or Azure Key Vault HSMs using Nethereum. Cloud Kms is an agent skill from Nethereum/Nethereum. Sign Ethereum transactions with AWS KMS or Azure Key Vault HSMs using Nethereum.

When should I use Cloud Kms?

Cloud Kms fits situations like: the user asks about AWS KMS Ethereum signing; azure Key Vault signing; managed key signing; serverless wallet.

How do I install Cloud Kms in Claude Code?

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

How do I install Cloud Kms in Codex?

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

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

What does Cloud Kms need to run?

Going by SKILL.md and its folder, Cloud Kms needs the command-line tools its instructions call (dotnet, aws and az).

Does Cloud Kms 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 Cloud Kms 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 Cloud Kms use?

Cloud Kms 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 Cloud Kms use?

About 738 tokens (SKILL.md is roughly 3k 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 Cloud Kms?

Skills that share tags, products or a category with Cloud Kms: Migrate Dotnet9 To Dotnet10 (dotnet/skills, 5.6k stars), Azure Security Keyvault Keys Dotnet (microsoft/skills, 3.1k stars), AWS Serverless Eda (zxkane/aws-skills, 367 stars) and Foundatio (FoundatioFx/Foundatio, 2.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Cloud Kms?

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 Cloud Kms

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

Cloud KMS Signing with Nethereum

AWS KMS

Create Key

Sign Transactions

Auth Methods

Azure Key Vault

Create Key

Sign Transactions

Auth Methods

Files

Compare with similar skills

Similar skills

More from Nethereum/Nethereum

Related

Questions about Cloud Kms