ClaudSkills / Security / identity-access

Web3 Bug Classes

Q: What is a Claude Code skill and how does the Web3 Bug Classes skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Web3 Bug Classes is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Security · Sub-category: identity-access · Last updated: 2026-06-06

Complete reference for all 10 DeFi smart contract bug classes. Use this when hunting for specific vulnerability types, need attack patterns for accounting desync, access control, incomplete path, off-by-one, oracle manipulation, ERC4626 vaults, reentrancy, flash loans, signature replay, or proxy/upgrade bugs.

From the source SKILL.md

10 bug classes. Each one with root cause, vulnerable code, fix, grep patterns, and real paid examples.

What this skill does

Web3 Bug Classes is a community-contributed Claude Code skill in the identity-access sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/web3-bug-classes/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Web3 Bug Classes Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 116,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/web3-bug-classes
curl -L https://claudskills.com/skills/web3-bug-classes/SKILL.md \
  -o ~/.claude/skills/web3-bug-classes/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/web3-bug-classes/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/web3-bug-classes/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\web3-bug-classes\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Web3 Bug Classes Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/web3-bug-classes/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Web3 Bug Classes skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Web3 Bug Classes skill?

Use Web3 Bug Classes when your Claude Code task falls under the Security category — specifically in the identity access area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Web3 Bug Classes" or describe the task and let Claude pick). Browse related skills at /category/security/.

What is a Claude Code skill and how does the Web3 Bug Classes skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Web3 Bug Classes is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/Olaradiallysymmetrical491/web3-bug-bounty-hunting-ai-skills/blob/HEAD/web3-bug-classes/SKILL.md
License: MIT
Author: Olaradiallysymmetrical491

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

Olaradiallysymmetrical491. (2026). Web3 Bug Classes [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/web3-bug-classes/

BibTeX

@misc{web3-bug-classes-2026,
  author    = {Olaradiallysymmetrical491},
  title     = {Web3 Bug Classes [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/web3-bug-classes/}
}

Embed this skill

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Badge

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