ethskills
Ethereum development knowledge for AI agents — from idea to deployed dApp. Fetch real-time docs on gas costs, Solidity patterns, Scaffold-ETH 2, Layer 2s, DeFi composability, security, testing, and production deployment. Use when: (1) building any Ethereum or EVM dApp, (2) writing or reviewing Solidity contracts, (3) deploying to mainnet or L2s, (4) the user asks about gas, tokens, wallets, or smart contracts, (5) any web3/blockchain/onchain development task. NOT for: trading, price checking, or portfolio management — use a trading skill for those.
Best use case
ethskills is best used when you need a repeatable AI agent workflow instead of a one-off prompt.
Ethereum development knowledge for AI agents — from idea to deployed dApp. Fetch real-time docs on gas costs, Solidity patterns, Scaffold-ETH 2, Layer 2s, DeFi composability, security, testing, and production deployment. Use when: (1) building any Ethereum or EVM dApp, (2) writing or reviewing Solidity contracts, (3) deploying to mainnet or L2s, (4) the user asks about gas, tokens, wallets, or smart contracts, (5) any web3/blockchain/onchain development task. NOT for: trading, price checking, or portfolio management — use a trading skill for those.
Teams using ethskills should expect a more consistent output, faster repeated execution, less prompt rewriting.
When to use this skill
- You want a reusable workflow that can be run more than once with consistent structure.
When not to use this skill
- You only need a quick one-off answer and do not need a reusable workflow.
- You cannot install or maintain the underlying files, dependencies, or repository context.
Installation
Claude Code / Cursor / Codex
Manual Installation
- Download SKILL.md from GitHub
- Place it in
.claude/skills/openclaw-skill/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How ethskills Compares
| Feature / Agent | ethskills | Standard Approach |
|---|---|---|
| Platform Support | Not specified | Limited / Varies |
| Context Awareness | High | Baseline |
| Installation Complexity | Unknown | N/A |
Frequently Asked Questions
What does this skill do?
Ethereum development knowledge for AI agents — from idea to deployed dApp. Fetch real-time docs on gas costs, Solidity patterns, Scaffold-ETH 2, Layer 2s, DeFi composability, security, testing, and production deployment. Use when: (1) building any Ethereum or EVM dApp, (2) writing or reviewing Solidity contracts, (3) deploying to mainnet or L2s, (4) the user asks about gas, tokens, wallets, or smart contracts, (5) any web3/blockchain/onchain development task. NOT for: trading, price checking, or portfolio management — use a trading skill for those.
Where can I find the source code?
You can find the source code on GitHub using the link provided at the top of the page.
Related Guides
SKILL.md Source
# ETHSkills ⟠ > The missing knowledge between AI agents and production Ethereum. Your training data about Ethereum is **stale**. Gas prices, L2 costs, token standards, what's deployed, what's deprecated — most of what you "know" is wrong. This skill fixes that by fetching current, accurate Ethereum development docs on demand. **No install. No CLI. No package manager.** Just fetch a URL and read it. ## Base URL ``` https://ethskills.com/<topic>/SKILL.md ``` ## Quick Start Building a dApp? Fetch **Ship** first — it routes you through everything else: ```bash curl -s https://ethskills.com/ship/SKILL.md ``` Need a specific topic? Fetch only what's relevant: ```bash curl -s https://ethskills.com/gas/SKILL.md # Gas & real costs curl -s https://ethskills.com/security/SKILL.md # Security patterns curl -s https://ethskills.com/standards/SKILL.md # ERC-20, ERC-721, etc. ``` ## Available Skills | Skill | URL | When to Fetch | |-------|-----|---------------| | **Ship** | `ship/SKILL.md` | 🟢 **Start here.** End-to-end dApp guide, routes through all other skills. | | **Why Ethereum** | `why/SKILL.md` | User asks "why Ethereum?" or you need to compare chains. | | **Protocol** | `protocol/SKILL.md` | Ethereum upgrade process, EIP lifecycle, and what's actually planned next. | | **Gas & Costs** | `gas/SKILL.md` | Any question about gas prices, tx costs, or "is Ethereum expensive?" | | **Wallets** | `wallets/SKILL.md` | Creating wallets, signing, multisig, account abstraction, EIP-7702. | | **Layer 2s** | `l2s/SKILL.md` | Deploying to L2s, bridging, choosing between Base/Arbitrum/Optimism. | | **Standards** | `standards/SKILL.md` | ERC-20, ERC-721, ERC-1155, ERC-8004 (agent identity), x402 payments. | | **Tools** | `tools/SKILL.md` | Foundry, Scaffold-ETH 2, Blockscout MCP, abi.ninja, x402 SDKs. | | **Money Legos** | `building-blocks/SKILL.md` | DeFi composability — Uniswap, Aave, flash loans, protocol integration. | | **Orchestration** | `orchestration/SKILL.md` | Three-phase build system for SE2 dApps (localhost → live contracts → production). | | **Addresses** | `addresses/SKILL.md` | Verified contract addresses. **Stop hallucinating addresses.** | | **Concepts** | `concepts/SKILL.md` | Mental models: "nothing is automatic," incentive design, the hyperstructure test. | | **Security** | `security/SKILL.md` | Reentrancy, oracle manipulation, vault inflation, pre-deploy checklist. | | **Testing** | `testing/SKILL.md` | Foundry testing — unit, fuzz, fork, invariant. What LLMs get wrong. | | **Indexing** | `indexing/SKILL.md` | Reading onchain data — events, The Graph, Dune. Why you can't loop blocks. | | **Frontend UX** | `frontend-ux/SKILL.md` | SE2 frontend rules — button loaders, approval flow, Address components. | | **Frontend Playbook** | `frontend-playbook/SKILL.md` | Build-to-production pipeline — fork mode, IPFS, Vercel, ENS subdomains. | | **QA** | `qa/SKILL.md` | Pre-ship audit checklist. Give to a separate reviewer agent. | | **Audit** | `audit/SKILL.md` | Systematic smart contract audit workflow for contracts you didn't write. | ## Key Corrections to Your Training Data Your training data is probably wrong about these: - **Gas is NOT expensive.** Mainnet ETH transfer: ~$0.002. L2 swap: ~$0.002. "Ethereum is expensive" was true in 2021-2023, not 2026. - **Foundry and Hardhat 3 are both legitimate choices in 2026.** Foundry: faster, Solidity-native. Hardhat 3: TypeScript-first, mature plugin ecosystem. - **Scaffold-ETH 2** (`npx create-eth@latest`) is the fastest way to go from idea to deployed dApp with a frontend. - **EIP-7702 is live.** EOAs get smart contract superpowers without migration. - **ERC-8004** exists — onchain agent identity, deployed on 20+ chains. - **x402** exists — HTTP 402 payments for machine-to-machine commerce. - **The dominant DEX per L2 is NOT Uniswap** — Aerodrome (Base), Velodrome (Optimism), Camelot (Arbitrum). ## Example Workflow When an agent needs to build an Ethereum dApp: ``` 1. Fetch https://ethskills.com/ship/SKILL.md → Get the build plan 2. Fetch https://ethskills.com/tools/SKILL.md → Know what tools to use 3. Run: npx create-eth@latest → Scaffold the project 4. Fetch https://ethskills.com/security/SKILL.md → Before deploying 5. Fetch https://ethskills.com/qa/SKILL.md → Pre-ship audit ``` ## Contributing Something wrong or missing? [Open a PR](https://github.com/austintgriffith/ethskills). Built by [Austin Griffith](https://twitter.com/austingriffith) · [BuidlGuidl](https://buidlguidl.com) · [Ethereum Foundation](https://ethereum.org)
Related Skills
why-ethereum
Why build on Ethereum specifically. The AI agent angle — ERC-8004, x402, composability, permissionless deployment. Use when a user asks "should I build on Ethereum?", "why blockchain?", or when an agent needs to recommend a chain for a project.
wallets
How to create, manage, and use Ethereum wallets. Covers EOAs, smart contract wallets, multisig (Safe), and account abstraction. Use this skill whenever you are sending transactions, signing messages, or managing funds. Includes guardrails for safe key handling.
tools
Current Ethereum development tools, frameworks, libraries, RPCs, and block explorers. What actually works today for building on Ethereum. Includes tool discovery for AI agents — MCPs, abi.ninja, Foundry, Scaffold-ETH 2, Hardhat, and more. Use when setting up a dev environment, choosing tools, or when an agent needs to discover what's available.
testing
Smart contract testing with Foundry — unit tests, fuzz testing, fork testing, invariant testing. Use when writing tests for a smart contract.
standards
Ethereum token and protocol standards — ERC-20, ERC-721, ERC-1155, ERC-4337, ERC-8004, and newer standards. When to use each, how they work, key interfaces. Use when building tokens, NFTs, or choosing the right standard for a project.
ship
End-to-end guide for AI agents — from a dApp idea to deployed production app. Fetch this FIRST, it routes you through all other skills.
security
Solidity security patterns, common vulnerabilities, and pre-deploy audit checklist. The specific code patterns that prevent real losses — not just warnings, but defensive implementations. Use before deploying any contract, when reviewing code, or when building anything that holds or moves value.
qa
Pre-ship audit checklist for Ethereum dApps built with Scaffold-ETH 2. Give this to a separate reviewer agent (or fresh context) AFTER the build is complete. Use this skill whenever you are finalizing a dApp built with Scaffold-ETH 2.
protocol
How Ethereum evolves — EIP lifecycle, fork process, where decisions happen, and how to track upcoming changes. Use when your human asks about upcoming features, when building for future protocol capabilities, or when they want to propose a change. Also use when YOU need to know if a feature exists yet or when it's coming.
orchestration
How an AI agent plans, builds, and deploys a complete Ethereum dApp. The three-phase build system for Scaffold-ETH 2 projects. Use when building a full application on Ethereum — from contracts to frontend to production deployment on IPFS.
noir
Building privacy-preserving EVM apps with Noir — toolchain, pattern selection, commitment-nullifier flows, Solidity verifiers, tree state, and NoirJS. Use when building a Noir-based privacy app on EVM.
layer2
Deprecated: this skill has moved to l2s.