Agent skill

Deploy Contract

Deploy smart contracts to Ethereum using Nethereum typed deployment handlers (.NET/C).

Install Deploy Contract

skills CLI

$ npx skills add Nethereum/Nethereum --skill deploy-contract -a claude-code

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

GitHub CLI

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

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 deploy-contract -a codex

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

GitHub CLI

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

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

GitHub CLI

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

--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 deploy-contract -a gemini-cli

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

GitHub CLI

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

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 deploy-contract -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/deploy-contract .github/skills/deploy-contract && 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 "deploy-contract" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/deploy-contract into .github/skills/deploy-contract/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "deploy-contract", 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 deploy-contract -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 deploy-contract --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/deploy-contract .opencode/skills/deploy-contract && 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 "deploy-contract" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/deploy-contract into .opencode/skills/deploy-contract/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "deploy-contract", 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: deploy-contract
GitHub stars: 2.3k
Token cost: ~1.2k tokens
SKILL.md length: 269 words
Files: 1
Skills in repo: 71
Repo updated: Oct 5, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Deploy smart contracts to Ethereum using Nethereum typed deployment handlers (.NET/C).

The user asks about deploying a contract
SKILL.md covers Typed Deployment (Recommended), Estimate Gas Before Deploying, Deploy Without Code-Generated… and Multiple Constructor Parameters, plus 2 more sections
Calls dotnet
Publishing a smart contract

What it does

Deploy Contract is an agent skill from Nethereum/Nethereum. Deploy smart contracts to Ethereum using Nethereum typed deployment handlers (.NET/C). Use this skill whenever the user asks about deploying a contract, publishing a smart contract, contract deployment, constructor parameters, deployment gas estimation, or getting a contract address after deployment.

Its SKILL.md is about 1.2k 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 Deployment. It works with C#, .NET 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 deploying a contract
Publishing a smart contract
Contract deployment
Constructor parameters

Example prompts

“/deploy-contract”

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

Deploy Contract loads about 1.2k tokens when it runs. Until then it costs about 80 tokens; SKILL.md has 269 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~80
When it runs · the whole SKILL.md, loaded when a task matches: ~1.2k

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). 269 words, ~1,173 tokens.

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

name: deploy-contract
description: Deploy smart contracts to Ethereum using Nethereum typed deployment handlers (.NET/C#). Use this skill whenever the user asks about deploying a contract, publishing a smart contract, contract deployment, constructor parameters, deployment gas estimation, or getting a contract address after deployment.
user-invocable: true

Deploy a Contract

Deploying a contract sends a transaction containing the compiled bytecode and encoded constructor parameters. Nethereum's typed deployment handler takes care of gas estimation, nonce management, and receipt tracking — you just define the deployment message and send it.

NuGet: Nethereum.Web3

bash

dotnet add package Nethereum.Web3

Typed Deployment (Recommended)

Define a deployment message class that inherits from ContractDeploymentMessage. It holds the compiled bytecode and maps constructor parameters as properties with [Parameter] attributes:

csharp

using Nethereum.Web3;
using Nethereum.Web3.Accounts;
using Nethereum.ABI.FunctionEncoding.Attributes;
using Nethereum.Contracts;
using System.Numerics;

public class StandardTokenDeployment : ContractDeploymentMessage
{
    public static string BYTECODE = "0x60606040...";
    public StandardTokenDeployment() : base(BYTECODE) { }

    [Parameter("uint256", "totalSupply")]
    public BigInteger TotalSupply { get; set; }
}

Then create a Web3 instance with your account and deploy. The handler encodes the constructor args into the bytecode, estimates gas, and waits for the receipt:

csharp

var account = new Account("0xYOUR_PRIVATE_KEY");
var web3 = new Web3(account, "https://your-rpc-url");

var handler = web3.Eth.GetContractDeploymentHandler<StandardTokenDeployment>();
var receipt = await handler.SendRequestAndWaitForReceiptAsync(
    new StandardTokenDeployment { TotalSupply = Web3.Convert.ToWei(1000000) });

Console.WriteLine($"Deployed at: {receipt.ContractAddress}");

Gas estimation, nonce, and EIP-1559 fees are all automatic.

Estimate Gas Before Deploying

If you want to check the cost before committing, call EstimateGasAsync. This simulates the deployment without sending a transaction:

csharp

var deployment = new StandardTokenDeployment { TotalSupply = Web3.Convert.ToWei(1000000) };
var estimatedGas = await handler.EstimateGasAsync(deployment);
Console.WriteLine($"Estimated gas: {estimatedGas.Value}");

Note: SendRequestAndWaitForReceiptAsync estimates gas automatically if you don't set Gas on the message — this step is only needed when you want to display costs to a user.

Deploy Without Code-Generated Classes

For quick prototyping when you have raw ABI and bytecode strings. Less safe — constructor argument types aren't checked at compile time:

csharp

var receipt = await web3.Eth.DeployContract.SendRequestAndWaitForReceiptAsync(
    abi, bytecode, account.Address,
    new Nethereum.Hex.HexTypes.HexBigInteger(3000000),
    null, null, constructorArg1, constructorArg2);

Multiple Constructor Parameters

Contracts often take multiple constructor arguments. Each maps to a property on the deployment class:

csharp

public class MyNFTDeployment : ContractDeploymentMessage
{
    public static string BYTECODE = "0x...";
    public MyNFTDeployment() : base(BYTECODE) { }

    [Parameter("string", "name", 1)]
    public string Name { get; set; }

    [Parameter("string", "symbol", 2)]
    public string Symbol { get; set; }

    [Parameter("uint256", "maxSupply", 3)]
    public BigInteger MaxSupply { get; set; }
}

var receipt = await handler.SendRequestAndWaitForReceiptAsync(
    new MyNFTDeployment { Name = "My NFT", Symbol = "MNFT", MaxSupply = 10000 });

Check Deployment Status

The receipt's Status tells you if the deployment succeeded. A status of 1 means success; 0 means the constructor reverted (often a require failure):

csharp

if (receipt.Status.Value == 1)
{
    Console.WriteLine($"Deployed at block {receipt.BlockNumber.Value}");
    Console.WriteLine($"Gas used: {receipt.GasUsed.Value}");
    Console.WriteLine($"Contract address: {receipt.ContractAddress}");
}

When to Use Which Approach

Approach	When
Typed deployment (`GetContractDeploymentHandler<T>`)	Recommended for all projects — type-safe, auto gas estimation
Code-generated deployment	Best — use `Nethereum.Generator.Console` to generate the deployment class from ABI
Raw ABI deployment (`DeployContract.SendRequestAsync`)	Quick prototyping when you have ABI/bytecode strings

For full documentation, see: https://docs.nethereum.com/docs/smart-contracts/deploy-a-contract

Files

Just SKILL.md in plugins/nethereum-skills/skills/deploy-contract of Nethereum/Nethereum.

Open the folder on GitHubat commit 229f278

Compare with similar skills

Deploy Contract 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.

Deploy Contract compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Deploy Contract this skillNethereum/Nethereum	2.3k	—	~1.2k	Automated safety check: Pass	MIT	2 days ago
Orchestrationaustintgriffith/ethskills	294	—	~2.2k	Automated safety check: Notes	None	1 mo ago
Akka.NET Management and DiscoveryAaronontheweb/dotnet-skills	1.2k	1 repos	~2.5k	Automated safety check: Pass	MIT	19 days ago
ClankerBankrBot/skills	1.2k	1 repos	~3k	Automated safety check: Notes	None	2 days ago
Use Smart Contract Platformcirclefin/skills	155	—	~2.9k	Automated safety check: Notes	Apache-2.0	21 days ago
Cross Chain Securityccashwell/evm-cortex	131	—	~1.7k	Automated safety check: Pass	MIT	7 days ago

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Works with

Questions about Deploy Contract

What does Deploy Contract do?

Deploy smart contracts to Ethereum using Nethereum typed deployment handlers (.NET/C). Deploy Contract is an agent skill from Nethereum/Nethereum.NET/C).

When should I use Deploy Contract?

Deploy Contract fits situations like: the user asks about deploying a contract; publishing a smart contract; contract deployment; constructor parameters.

How do I install Deploy Contract in Claude Code?

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

How do I install Deploy Contract in Codex?

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

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

What does Deploy Contract need to run?

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

Does Deploy Contract 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 Deploy Contract 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 Deploy Contract use?

Deploy Contract 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 Deploy Contract use?

About 1.2k tokens (SKILL.md is roughly 4.7k 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 Deploy Contract?

Skills that share tags, products or a category with Deploy Contract: Orchestration (austintgriffith/ethskills, 294 stars), Akka.NET Management and Discovery (Aaronontheweb/dotnet-skills, 1.2k stars), Clanker (BankrBot/skills, 1.2k stars) and Use Smart Contract Platform (circlefin/skills, 155 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Deploy Contract?

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 Deploy Contract

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

Deploy a Contract

Typed Deployment (Recommended)

Estimate Gas Before Deploying

Deploy Without Code-Generated Classes

Multiple Constructor Parameters

Check Deployment Status

When to Use Which Approach

Files

Compare with similar skills

Similar skills

More from Nethereum/Nethereum

Related

Questions about Deploy Contract