Agent skill

Create2 Deployment

Deploy contracts to deterministic addresses using CREATE2 with Nethereum (.NET).

Install Create2 Deployment

skills CLI

$ npx skills add Nethereum/Nethereum --skill create2-deployment -a claude-code

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

GitHub CLI

$ gh skill install Nethereum/Nethereum create2-deployment --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/create2-deployment .claude/skills/create2-deployment && 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 "create2-deployment" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/create2-deployment into .claude/skills/create2-deployment/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create2-deployment", 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/create2-deployment

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 create2-deployment -a codex

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

GitHub CLI

$ gh skill install Nethereum/Nethereum create2-deployment --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/create2-deployment .agents/skills/create2-deployment && 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 "create2-deployment" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/create2-deployment into .agents/skills/create2-deployment/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create2-deployment", 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 create2-deployment -a cursor

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

GitHub CLI

$ gh skill install Nethereum/Nethereum create2-deployment --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/create2-deployment .cursor/skills/create2-deployment && 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 "create2-deployment" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/create2-deployment into .cursor/skills/create2-deployment/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create2-deployment", 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/create2-deployment

--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 create2-deployment -a gemini-cli

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

GitHub CLI

$ gh skill install Nethereum/Nethereum create2-deployment --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/create2-deployment .gemini/skills/create2-deployment && 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 "create2-deployment" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/create2-deployment into .gemini/skills/create2-deployment/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create2-deployment", 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 create2-deployment

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 create2-deployment -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/create2-deployment .github/skills/create2-deployment && 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 "create2-deployment" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/create2-deployment into .github/skills/create2-deployment/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create2-deployment", 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 create2-deployment -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 create2-deployment --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/create2-deployment .opencode/skills/create2-deployment && 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 "create2-deployment" agent skill from https://github.com/Nethereum/Nethereum/tree/master/plugins/nethereum-skills/skills/create2-deployment into .opencode/skills/create2-deployment/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "create2-deployment", 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: create2-deployment
GitHub stars: 2.3k
Token cost: ~952 tokens
SKILL.md length: 255 words
Files: 1
Skills in repo: 71
Repo updated: Oct 5, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Deploy contracts to deterministic addresses using CREATE2 with Nethereum (.NET).

The user asks about CREATE2
SKILL.md covers How the Address is Computed, Predict Address, Check If Already Deployed and Deploy via CREATE2 Proxy, plus 4 more sections
Calls dotnet
Deterministic deployment

What it does

Create2 Deployment is an agent skill from Nethereum/Nethereum. Deploy contracts to deterministic addresses using CREATE2 with Nethereum (.NET). Use this skill whenever the user asks about CREATE2, deterministic deployment, counterfactual addresses, predictable contract addresses, cross-chain same-address deployment, deployment proxies, or address prediction in C/.NET.

Its SKILL.md is about 950 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 DevOps & Cloud, covering Deployment. It works with .NET 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 CREATE2
Deterministic deployment
Counterfactual addresses
Predictable contract addresses

Example prompts

“/create2-deployment”

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

Create2 Deployment loads about 952 tokens when it runs. Until then it costs about 82 tokens; SKILL.md has 255 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~82
When it runs · the whole SKILL.md, loaded when a task matches: ~952

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). 255 words, ~952 tokens.

Download SKILL.mdSave it as .claude/skills/create2-deployment/SKILL.md (or your agent's skills folder).

name: create2-deployment
description: Deploy contracts to deterministic addresses using CREATE2 with Nethereum (.NET). Use this skill whenever the user asks about CREATE2, deterministic deployment, counterfactual addresses, predictable contract addresses, cross-chain same-address deployment, deployment proxies, or address prediction in C#/.NET.
user-invocable: true

CREATE2 Deterministic Deployment

CREATE2 lets you deploy a contract to a predictable address that depends only on the deployer, a salt, and the bytecode. This is useful for counterfactual deployments (predicting addresses before deployment), deploying the same contract to the same address across multiple chains, and factory patterns like Account Abstraction.

NuGet: Nethereum.Web3

bash

dotnet add package Nethereum.Web3

The service is accessible via web3.Eth.Create2DeterministicDeploymentProxyService.

How the Address is Computed

The CREATE2 address formula is:

address = keccak256(0xff ++ deployerAddress ++ salt ++ keccak256(bytecode))[12:]

Because the address depends only on these inputs, you can compute it before deployment — and anyone with the same inputs gets the same result.

Predict Address

Calculate the address without deploying. This is a pure local computation — no transaction, no gas:

csharp

var create2Service = web3.Eth.Create2DeterministicDeploymentProxyService;
var salt = "0x0000000000000000000000000000000000000000000000000000000000000001";

var predictedAddress = create2Service
    .CalculateCreate2Address<MyContractDeployment>(
        new MyContractDeployment { /* constructor args */ },
        proxyAddress,
        salt);

Check If Already Deployed

Before deploying, verify the contract doesn't already exist at the predicted address. This avoids wasting gas on a transaction that will fail:

csharp

var alreadyDeployed = await create2Service
    .HasContractAlreadyDeployedAsync(predictedAddress);

Deploy via CREATE2 Proxy

The deployment goes through a deterministic proxy contract. The proxy forwards the bytecode + salt to the CREATE2 opcode:

csharp

var salt = "0x0000000000000000000000000000000000000000000000000000000000000001";

var result = await create2Service
    .DeployContractRequestAndWaitForReceiptAsync<MyContractDeployment>(
        new MyContractDeployment { /* constructor args */ },
        proxyAddress,
        salt);

Console.WriteLine($"Deployed to: {result.ContractAddress}");

The result's ContractAddress will match the predicted address exactly.

Deploy the Proxy

If the deterministic deployment proxy isn't deployed on your chain yet (common on private/app chains), deploy it first:

csharp

var proxyAddress = await create2Service
    .DeployProxyAndGetContractAddressAsync();

On public networks (Mainnet, Sepolia, Polygon, etc.), the standard proxy is usually already deployed.

Check Proxy Exists

csharp

var proxyDeployed = await create2Service
    .HasProxyBeenDeployedAsync(proxyAddress);

EIP-155 Chain-Specific Deployment

For deployments that include the chain ID (producing a different proxy address per chain, but deterministic on each):

csharp

var deployment = await create2Service
    .GenerateEIP155DeterministicDeploymentAsync();

Common Patterns

Task	Method
Predict address	`CalculateCreate2Address<T>(deployment, proxy, salt)`
Check if deployed	`HasContractAlreadyDeployedAsync(address)`
Deploy contract	`DeployContractRequestAndWaitForReceiptAsync<T>(deployment, proxy, salt)`
Deploy proxy	`DeployProxyAndGetContractAddressAsync()`
Check proxy	`HasProxyBeenDeployedAsync(proxyAddress)`

For full documentation, see: https://docs.nethereum.com/docs/smart-contracts/guide-create2-deployment

Files

Just SKILL.md in plugins/nethereum-skills/skills/create2-deployment of Nethereum/Nethereum.

Open the folder on GitHubat commit 229f278

Compare with similar skills

Create2 Deployment 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.

Create2 Deployment compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Create2 Deployment this skillNethereum/Nethereum	2.3k	—	~952	Automated safety check: Pass	MIT	2 days ago
Akka.NET Management and DiscoveryAaronontheweb/dotnet-skills	1.2k	1 repos	~2.5k	Automated safety check: Pass	MIT	20 days ago
Aspiremicrosoft/aspire.dev	196	4 repos	~1.1k	Automated safety check: Pass	MIT	today
Migrate Dotnet9 To Dotnet10dotnet/skills	5.6k	2 repos	~4.8k	Automated safety check: Pass	MIT	yesterday
Foundationdb AspireSnowBankSDK/foundationdb-dotnet-client	158	—	~3.4k	Automated safety check: Pass	BSD-3-Clause	6 days ago
Aspire Service DefaultsAaronontheweb/dotnet-skills	1.2k	1 repos	~2.6k	Automated safety check: Pass	MIT	20 days ago

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Works with

Questions about Create2 Deployment

What does Create2 Deployment do?

Deploy contracts to deterministic addresses using CREATE2 with Nethereum (.NET). Create2 Deployment is an agent skill from Nethereum/Nethereum.NET).

When should I use Create2 Deployment?

Create2 Deployment fits situations like: the user asks about CREATE2; deterministic deployment; counterfactual addresses; predictable contract addresses.

How do I install Create2 Deployment in Claude Code?

Run `npx skills add Nethereum/Nethereum --skill create2-deployment -a claude-code`. Or copy the skill folder (plugins/nethereum-skills/skills/create2-deployment in Nethereum/Nethereum) into .claude/skills/create2-deployment in your project. Claude Code loads it when a task matches its description.

How do I install Create2 Deployment in Codex?

Run `npx skills add Nethereum/Nethereum --skill create2-deployment -a codex`. Or copy the skill folder (plugins/nethereum-skills/skills/create2-deployment in Nethereum/Nethereum) into .agents/skills/create2-deployment in your project. Codex loads it when a task matches its description.

Can I use Create2 Deployment 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 create2-deployment -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/create2-deployment, .gemini/skills/create2-deployment, .github/skills/create2-deployment and .opencode/skills/create2-deployment in your project.

What does Create2 Deployment need to run?

Going by SKILL.md and its folder, Create2 Deployment needs the command-line tools its instructions call (dotnet).

Does Create2 Deployment 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 Create2 Deployment 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 Create2 Deployment use?

Create2 Deployment 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 Create2 Deployment use?

About 952 tokens (SKILL.md is roughly 3.8k 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 Create2 Deployment?

Skills that share tags, products or a category with Create2 Deployment: Akka.NET Management and Discovery (Aaronontheweb/dotnet-skills, 1.2k stars), Aspire (microsoft/aspire.dev, 196 stars), Migrate Dotnet9 To Dotnet10 (dotnet/skills, 5.6k stars) and Foundationdb Aspire (SnowBankSDK/foundationdb-dotnet-client, 158 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Create2 Deployment?

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 Create2 Deployment

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

CREATE2 Deterministic Deployment

How the Address is Computed

Predict Address

Check If Already Deployed

Deploy via CREATE2 Proxy

Deploy the Proxy

Check Proxy Exists

EIP-155 Chain-Specific Deployment

Common Patterns

Files

Compare with similar skills

Similar skills

More from Nethereum/Nethereum

Related

Questions about Create2 Deployment