Requirements
- Target platform
- OpenClaw
- Install method
- Manual import
- Extraction
- Extract archive
- Prerequisites
- OpenClaw
- Primary doc
- SKILL.md
Tencent SkillHub Β· AI
Ethereum
Assist with Ethereum transactions, gas optimization, token approvals, and L2 bridges.
skill openclawclawhub Free
Assist with Ethereum transactions, gas optimization, token approvals, and L2 bridges.
β¬ 0 downloads β
0 stars Unverified but indexed
Install for OpenClaw
Quick setup
- Download the package from Yavira.
- Extract the archive and review SKILL.md first.
- Import or place the package into your OpenClaw setup.
Package facts
- Download mode
- Yavira redirect
- Package format
- ZIP package
- Source platform
- Tencent SkillHub
- What's included
- SKILL.md
Validation
- Use the Yavira download entry.
- Review SKILL.md after the package is downloaded.
- Confirm the extracted package contains the expected setup assets.
Install with your agent
Agent handoff
Hand the extracted package to your coding agent with a concrete install brief instead of figuring it out manually.
- Download the package from Yavira.
- Extract it into a folder your agent can access.
- Paste one of the prompts below and point your agent at the extracted folder.
New install
I downloaded a skill package from Yavira. Read SKILL.md from the extracted folder and install it by following the included instructions. Tell me what you changed and call out any manual steps you could not complete.
Upgrade existing
I downloaded an updated skill package from Yavira. Read SKILL.md from the extracted folder, compare it with my current installation, and upgrade it while preserving any custom configuration unless the package docs explicitly say otherwise. Summarize what changed and any follow-up checks I should run.
Trust & source
Release facts
- Source
- Tencent SkillHub
- Verification
- Indexed source record
- Version
- 1.0.0
Provenance
- Publisher
- ivangdavila
- Source page
- View original listing
- Canonical URL
- Open canonical page
Documentation
Nonce and Stuck Transactions
Every Ethereum account has a nonce that increments with each transaction β if tx with nonce 5 is pending, nonces 6+ are blocked until 5 confirms To unstick: send a new tx with the SAME nonce and higher gas β this replaces the pending tx (even a 0 ETH self-transfer works) MetaMask "Speed up" and "Cancel" buttons do exactly this β they resubmit with same nonce and higher priority fee Nonce gaps cause permanent stuck state β if nonce 3 was never broadcast but 4 was, 4 will never confirm until 3 is sent
Gas (EIP-1559)
maxFeePerGas = max total you'll pay per gas unit. maxPriorityFeePerGas = tip to validator. baseFee = burned, set by protocol Actual cost: min(baseFee + priorityFee, maxFee) Γ gasUsed β unused gas is refunded, but failed txs still consume gas Gas limit is separate from gas price β setting limit too low causes "out of gas" revert, but you still pay for gas used up to that point Check current base fee at etherscan.io/gastracker or via eth_gasPrice RPC β wallets often overestimate by 20-50%
Token Approvals (Critical Security)
ERC-20 approve() grants a contract permission to spend your tokens β many dApps request unlimited (type(uint256).max) approval If that contract gets hacked, attacker can drain all approved tokens even years later β audit approvals at revoke.cash Recommend users approve only the exact amount needed, or revoke after each use Approvals persist forever until explicitly revoked β changing wallets doesn't help if the old address still has tokens
Failed Transactions
A reverted transaction is mined and consumes gas β you pay even though nothing happened Common causes: slippage exceeded, deadline passed, insufficient token balance, contract paused "Transaction failed" in explorer means it executed but reverted β completely different from "pending" (not yet mined) Simulating transactions before sending (via Tenderly or wallet preview) catches most revert conditions
L2 Bridges and Withdrawals
Optimistic rollups (Optimism, Arbitrum, Base) have 7-day withdrawal period to mainnet β this is not a bug, it's the security model ZK rollups (zkSync, Starknet) have faster finality but bridging back still takes 1-24 hours depending on liquidity Third-party bridges (Hop, Across) offer faster exits but charge fees and have smart contract risk Never bridge more than you can afford to wait 7 days for β or use a fast bridge and accept the fee
MEV Protection
Public mempool transactions can be frontrun or sandwiched β especially swaps on DEXs Flashbots Protect RPC (protect.flashbots.net) hides transactions from public mempool until mined Private transaction options: MEV Blocker, Flashbots Protect, or DEXs with native protection (CoW Swap) Signs of sandwich attack: swap executed at worse price than quoted, with suspicious txs immediately before and after yours
Address Validation
Ethereum addresses are case-insensitive but the checksum (mixed case) catches typos β 0xABC... vs 0xabc... are the same address ENS domains can expire β always verify current owner before sending to a .eth name Contract addresses vs EOA: contracts can reject ETH transfers or behave unexpectedly β check on etherscan if address has code Some tokens have multiple addresses (official + scam clones) β verify contract address on CoinGecko or project's official site
Category context
Agent frameworks, memory systems, reasoning layers, and model-native orchestration.
Source: Tencent SkillHub
Largest current source with strong distribution and engagement signals.
Package contents
Included in package
1 Docs
- SKILL.md