Agent skill

Solidity Security

Master smart contract security best practices to prevent common vulnerabilities and implement secure Solidity patterns.

Install Solidity Security

skills CLI

$ npx skills add wshobson/agents --skill solidity-security -a claude-code

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

GitHub CLI

$ gh skill install wshobson/agents solidity-security --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/wshobson/agents.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/blockchain-web3/skills/solidity-security .claude/skills/solidity-security && 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 "solidity-security" agent skill from https://github.com/wshobson/agents/tree/main/plugins/blockchain-web3/skills/solidity-security into .claude/skills/solidity-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "solidity-security", 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/wshobson/agents/tree/main/plugins/blockchain-web3/skills/solidity-security

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 wshobson/agents --skill solidity-security -a codex

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

GitHub CLI

$ gh skill install wshobson/agents solidity-security --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/wshobson/agents.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/blockchain-web3/skills/solidity-security .agents/skills/solidity-security && 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 "solidity-security" agent skill from https://github.com/wshobson/agents/tree/main/plugins/blockchain-web3/skills/solidity-security into .agents/skills/solidity-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "solidity-security", 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 wshobson/agents --skill solidity-security -a cursor

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

GitHub CLI

$ gh skill install wshobson/agents solidity-security --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/wshobson/agents.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/blockchain-web3/skills/solidity-security .cursor/skills/solidity-security && 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 "solidity-security" agent skill from https://github.com/wshobson/agents/tree/main/plugins/blockchain-web3/skills/solidity-security into .cursor/skills/solidity-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "solidity-security", 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/wshobson/agents.git --path plugins/blockchain-web3/skills/solidity-security

--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 wshobson/agents --skill solidity-security -a gemini-cli

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

GitHub CLI

$ gh skill install wshobson/agents solidity-security --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/wshobson/agents.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/blockchain-web3/skills/solidity-security .gemini/skills/solidity-security && 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 "solidity-security" agent skill from https://github.com/wshobson/agents/tree/main/plugins/blockchain-web3/skills/solidity-security into .gemini/skills/solidity-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "solidity-security", 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 wshobson/agents solidity-security

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 wshobson/agents --skill solidity-security -a github-copilot

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

Manual copy

$ git clone --depth 1 https://github.com/wshobson/agents.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/blockchain-web3/skills/solidity-security .github/skills/solidity-security && 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 "solidity-security" agent skill from https://github.com/wshobson/agents/tree/main/plugins/blockchain-web3/skills/solidity-security into .github/skills/solidity-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "solidity-security", 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 wshobson/agents --skill solidity-security -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 wshobson/agents solidity-security --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/wshobson/agents.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/blockchain-web3/skills/solidity-security .opencode/skills/solidity-security && 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 "solidity-security" agent skill from https://github.com/wshobson/agents/tree/main/plugins/blockchain-web3/skills/solidity-security into .opencode/skills/solidity-security/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "solidity-security", 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: solidity-security
GitHub stars: 40k
Used in: 11 other repos
Token cost: ~892 tokens
SKILL.md length: 81 words
Files: 2 (incl. references)
Skills in repo: 142
Repo updated: Oct 5, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Master smart contract security best practices to prevent common vulnerabilities and implement secure Solidity patterns.

Writing smart contracts
SKILL.md covers When to Use This Skill, Detailed patterns and worked…, Testing for Security and Audit Preparation
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
Auditing existing contracts

What it does

Solidity Security is an agent skill from wshobson/agents. Master smart contract security best practices to prevent common vulnerabilities and implement secure Solidity patterns. Use when writing smart contracts, auditing existing contracts, or implementing security measures for blockchain applications.

Its SKILL.md is about 890 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/details.md`).

It sits in Backend & APIs, covering Smart contract auditing and Smart contracts. It works with Solidity. The repository describes itself as: Multi-harness agentic plugin marketplace for Claude Code, Codex, Cursor, OpenCode, GitHub Copilot, Google Antigravity, and Pi. The licence is MIT.

When your agent uses it

Writing smart contracts
Auditing existing contracts
Implementing security measures for blockchain applications

Example prompts

“/solidity-security”

What it can do on your machine

Read from SKILL.md and the folder at commit 46891e7. 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
No scripts in the folder and no shell commands in SKILL.md (its code samples are javascript and solidity).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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

Solidity Security loads about 892 tokens when it runs, and up to ~3.3k if it reads all its reference files. Until then it costs about 66 tokens; SKILL.md has 81 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~66
When it runs · the whole SKILL.md, loaded when a task matches: ~892
With references · SKILL.md plus every file in references/, read only if the agent opens them: ~3.3k

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 wshobson/agents at commit 46891e7, republished under its MIT licence (© wshobson). 81 words, ~892 tokens.

Download SKILL.mdSave it as .claude/skills/solidity-security/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.

name: solidity-security
description: Master smart contract security best practices to prevent common vulnerabilities and implement secure Solidity patterns. Use when writing smart contracts, auditing existing contracts, or implementing security measures for blockchain applications.

Solidity Security

Master smart contract security best practices, vulnerability prevention, and secure Solidity development patterns.

When to Use This Skill

Writing secure smart contracts
Auditing existing contracts for vulnerabilities
Implementing secure DeFi protocols
Preventing reentrancy, overflow, and access control issues
Optimizing gas usage while maintaining security
Preparing contracts for professional audits
Understanding common attack vectors

Detailed patterns and worked examples

Detailed pattern documentation lives in references/details.md. Read that file when the navigation tier above is insufficient.

Testing for Security

javascript

// Hardhat test example
const { expect } = require("chai");
const { ethers } = require("hardhat");

describe("Security Tests", function () {
  it("Should prevent reentrancy attack", async function () {
    const [attacker] = await ethers.getSigners();

    const VictimBank = await ethers.getContractFactory("SecureBank");
    const bank = await VictimBank.deploy();

    const Attacker = await ethers.getContractFactory("ReentrancyAttacker");
    const attackerContract = await Attacker.deploy(bank.address);

    // Deposit funds
    await bank.deposit({ value: ethers.utils.parseEther("10") });

    // Attempt reentrancy attack
    await expect(
      attackerContract.attack({ value: ethers.utils.parseEther("1") }),
    ).to.be.revertedWith("ReentrancyGuard: reentrant call");
  });

  it("Should prevent integer overflow", async function () {
    const Token = await ethers.getContractFactory("SecureToken");
    const token = await Token.deploy();

    // Attempt overflow
    await expect(token.transfer(attacker.address, ethers.constants.MaxUint256))
      .to.be.reverted;
  });

  it("Should enforce access control", async function () {
    const [owner, attacker] = await ethers.getSigners();

    const Contract = await ethers.getContractFactory("SecureContract");
    const contract = await Contract.deploy();

    // Attempt unauthorized withdrawal
    await expect(contract.connect(attacker).withdraw(100)).to.be.revertedWith(
      "Ownable: caller is not the owner",
    );
  });
});

Audit Preparation

solidity

contract WellDocumentedContract {
    /**
     * @title Well Documented Contract
     * @dev Example of proper documentation for audits
     * @notice This contract handles user deposits and withdrawals
     */

    /// @notice Mapping of user balances
    mapping(address => uint256) public balances;

    /**
     * @dev Deposits ETH into the contract
     * @notice Anyone can deposit funds
     */
    function deposit() public payable {
        require(msg.value > 0, "Must send ETH");
        balances[msg.sender] += msg.value;
    }

    /**
     * @dev Withdraws user's balance
     * @notice Follows CEI pattern to prevent reentrancy
     * @param amount Amount to withdraw in wei
     */
    function withdraw(uint256 amount) public {
        // CHECKS
        require(amount <= balances[msg.sender], "Insufficient balance");

        // EFFECTS
        balances[msg.sender] -= amount;

        // INTERACTIONS
        (bool success, ) = msg.sender.call{value: amount}("");
        require(success, "Transfer failed");
    }
}

Files

SKILL.md and 1 other file (references) in plugins/blockchain-web3/skills/solidity-security of wshobson/agents.

SKILL.md
references/details.md

Open the folder on GitHubat commit 46891e7

Used in 11 other repositories

We found 24 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 11 other GitHub owners. This page covers the copy in wshobson/agents, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Solidity Security 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.

Solidity Security compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Solidity Security this skillwshobson/agents	40k	11 repos	~892	Automated safety check: Pass	MIT	2 days ago
Fizz Convertpashov/skills	1.2k	2 repos	~3.7k	Automated safety check: Pass	MIT	2 days ago
Smart Contract Auditgreatpie/smart-contract-audit-skill	101	—	~1.1k	Automated safety check: Pass	None	7 mo ago
Solidity AuditorGabson0x/bountyforge	443	—	~3.7k	Automated safety check: Pass	None	20 days ago
Solidity Auditorpashov/skills	1.2k	—	~9.9k	Automated safety check: Pass	MIT	2 days ago
Input Arithmetic Safetyquillai-network/quillshield_skills	129	—	~3.1k	Automated safety check: Pass	MIT	6 mo ago

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Questions about Solidity Security

What does Solidity Security do?

Master smart contract security best practices to prevent common vulnerabilities and implement secure Solidity patterns. Solidity Security is an agent skill from wshobson/agents. Master smart contract security best practices to prevent common vulnerabilities and implement secure Solidity patterns.

When should I use Solidity Security?

Solidity Security fits situations like: writing smart contracts; auditing existing contracts; implementing security measures for blockchain applications.

How do I install Solidity Security in Claude Code?

Run `npx skills add wshobson/agents --skill solidity-security -a claude-code`. Or copy the skill folder (plugins/blockchain-web3/skills/solidity-security in wshobson/agents) into .claude/skills/solidity-security in your project. Claude Code loads it when a task matches its description.

How do I install Solidity Security in Codex?

Run `npx skills add wshobson/agents --skill solidity-security -a codex`. Or copy the skill folder (plugins/blockchain-web3/skills/solidity-security in wshobson/agents) into .agents/skills/solidity-security in your project. Codex loads it when a task matches its description.

Can I use Solidity Security 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 wshobson/agents --skill solidity-security -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/solidity-security, .gemini/skills/solidity-security, .github/skills/solidity-security and .opencode/skills/solidity-security in your project.

What does Solidity Security need to run?

SKILL.md names no scripts, command-line tools or credentials: Solidity Security is instructions for the agent only.

Does Solidity Security access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Solidity Security 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 Solidity Security use?

Solidity Security 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 Solidity Security use?

About 892 tokens (SKILL.md is roughly 3.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 2.4k tokens, read only when the agent opens those files.

What are the alternatives to Solidity Security?

Skills that share tags, products or a category with Solidity Security: Fizz Convert (pashov/skills, 1.2k stars), Smart Contract Audit (greatpie/smart-contract-audit-skill, 101 stars), Solidity Auditor (Gabson0x/bountyforge, 443 stars) and Solidity Auditor (pashov/skills, 1.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Solidity Security?

wshobson (a GitHub user) maintains it in wshobson/agents, which has 40,254 GitHub stars. The repository holds 142 skills in this directory. The repository was last updated on October 5, 2026.

Source: wshobson/agents on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Solidity Security

Install Solidity Security

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

Solidity Security

When to Use This Skill

Detailed patterns and worked examples

Testing for Security

Audit Preparation

Files

Used in 11 other repositories

Compare with similar skills

Similar skills

Fizz Convert

Smart Contract Audit

Solidity Auditor

Solidity Auditor

Input Arithmetic Safety

Solidity Vulnerability Scanner

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Questions about Solidity Security

Install Solidity Security

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

Solidity Security

When to Use This Skill

Detailed patterns and worked examples

Testing for Security

Audit Preparation

Files

Used in 11 other repositories

Compare with similar skills

Similar skills

More from wshobson/agents

Related

Questions about Solidity Security