A technical expert skill for managing Ethereum transactions, gas efficiency, security approvals, and Layer 2 bridging logic.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install ethereum
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install ethereum using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is Ethereum?
The Ethereum skill is a specialized module for Openclaw Skills designed to handle the complexities of the Ethereum Virtual Machine (EVM) and its ecosystem. It provides deep technical guidance on managing account nonces, navigating the EIP-1559 gas fee market, and securing digital assets through diligent token approval management.
By integrating this skill, users can better understand the nuances of blockchain interactions, from resolving stuck transactions to protecting themselves against MEV (Maximal Extractable Value) attacks. It acts as a bridge between high-level user intent and the low-level technical requirements of the Ethereum mainnet and various Layer 2 scaling solutions.
Ethereum Use Cases
- Unsticking pending transactions by resubmitting with identical nonces and higher priority fees.
- Optimizing gas costs by calculating maxFeePerGas and maxPriorityFeePerGas under EIP-1559.
- Auditing and revoking ERC-20 token approvals to prevent drainage from compromised smart contracts.
- Navigating L2 withdrawal periods for Optimistic and ZK rollups while minimizing exit times.
- Protecting decentralized exchange swaps from frontrunning and sandwich attacks using private RPC endpoints.
How Ethereum Works
- The skill analyzes the current network state, including base fees and the account's pending nonce count.
- It evaluates transaction parameters to ensure the gas limit is sufficient to prevent 'out of gas' reverts.
- Security checks are performed on contract addresses to verify checksums and distinguish between EOAs and smart contracts.
- Transaction simulations are recommended to catch potential revert conditions before gas is consumed on-chain.
- Private mempool routing is applied if MEV protection is required for sensitive swap operations.
Ethereum Setup
To utilize the Ethereum capabilities within your agent, ensure your environment is configured with the necessary RPC endpoints.
# Install the Ethereum skill via the Openclaw CLI
openclaw skills add ethereum
# Set your preferred Ethereum RPC provider
export ETH_RPC_URL="https://mainnet.infura.io/v3/YOUR_PROJECT_ID"
Ethereum Data Schema & Taxonomy
The skill organizes blockchain interaction data and metadata using the following structure:
| Component | Description |
|---|---|
| Transaction Metadata | Includes nonce, gas limit, and EIP-1559 fee parameters. |
| Approval Registry | Tracks token permissions and potential security risks via revoke.cash logic. |
| L2 Bridge State | Monitors withdrawal periods (e.g., 7-day windows for Optimistic rollups). |
| RPC Configuration | Manages public vs. private (Flashbots) mempool routing endpoints. |
Ethereum Advanced Features
- Flashbots Protect integration to hide transactions from the public mempool and prevent sandwich attacks.
- Automated gas estimation via etherscan gas tracker or native eth_gasPrice RPC calls.
- Support for multiple Layer 2 environments including Arbitrum, Optimism, Base, and zkSync.
- Checksum-aware address validation to prevent funds being sent to typo-heavy or malformed addresses.
- Integration with transaction simulation tools like Tenderly to visualize execution before broadcasting.
SKILL.md
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