# Blockchain Web3

> Gives your coding agent a blockchain developer and skills for secure Solidity, DeFi protocol templates, NFT standards and Web3 testing.

Blockchain Web3 is a plugin from Seth Hobson's open-source agents collection (wshobson/agents). It adds a blockchain developer subagent for smart contracts, DeFi protocols, NFT platforms and Web3 app architecture, plus four skills your agent loads when the work calls for them.

What its skills teach your agent
- Solidity security: secure patterns and the common vulnerabilities, such as reentrancy, overflow and access control, for writing new contracts, auditing existing ones and preparing them for a professional audit
- DeFi protocol templates: staking with reward distribution, automated market makers, governance tokens and flash loans
- NFT standards: ERC-721 and ERC-1155 contracts, metadata, minting, royalties, soulbound and dynamic NFTs, and marketplace features
- Web3 testing: unit and integration tests with Hardhat and Foundry, fuzzing, gas reports, mainnet forking, coverage and contract verification on Etherscan

The blockchain developer
A subagent your coding agent can hand work to. It covers Solidity and other smart contract languages, Ethereum and its layer 2 networks, other chains such as Solana and Cosmos, DeFi, NFTs and DAOs, with security reviews and gas and cost analysis.

How to install it
Add the claude-code-workflows marketplace from wshobson/agents, then install blockchain-web3 from it. Its maker also documents installing the collection's plugins in the OpenAI Codex CLI.

Good to know
- It's a community project by Seth Hobson under the MIT license, not an official product of any blockchain.
- Its templates are starting points. Have contracts that will hold real value audited before you deploy them.

- Type: Plugin
- Made by: wshobson
- Category: Crypto & Web3
- Formats: Claude plugins
- Version: 1.2.3
- Website: https://github.com/wshobson/agents
- Source: https://github.com/wshobson/agents/tree/HEAD/plugins/blockchain-web3
- Page: https://pluginboard.ai/plugins/blockchain-web3

## Works with

- Claude
- GitHub Copilot
- Claude Code
- OpenClaw

## Install

### Claude

In Claude (web or desktop): Customize → Plugins → Add → Add marketplace, enter wshobson/agents, then add blockchain-web3

### Claude Code

In Claude Code:

```text
/plugin marketplace add wshobson/agents
/plugin install blockchain-web3@claude-code-workflows
```

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From Pluginboard (https://pluginboard.ai).