Use this skill when the user asks to "get contract source code", "show verified contract", "fetch source from etherscan", "view smart contract code", or mentions viewing verified source code on blockchain. Requires a contract address and optional chain parameter (ethereum, polygon, arbitrum, optimism, base, bsc).
/plugin marketplace add cheolwanpark/useful-claude-plugins/plugin install crypto@personal-curationThis skill is limited to using the following tools:
Fetches verified smart contract source code from Etherscan (or equivalent block explorer).
Run the script with address and chain:
${CLAUDE_PLUGIN_ROOT}/scripts/crypto-contract-source.sh <address> [chain]
address (required): Contract address in hex format (0x + 40 hex characters). ENS names are NOT supported.chain (optional): Chain name - ethereum (default), polygon, arbitrum, optimism, base, bsc| Chain | Aliases | Explorer |
|---|---|---|
| ethereum | eth, mainnet | Etherscan |
| polygon | matic | Polygonscan |
| arbitrum | arb | Arbiscan |
| optimism | op | Optimism Etherscan |
| base | - | Basescan |
| bsc | binance | BSCScan |
cast (Foundry) must be installedETHERSCAN_API_KEY for EthereumPOLYGONSCAN_API_KEY for PolygonARBISCAN_API_KEY for ArbitrumOPTIMISM_API_KEY for OptimismBASESCAN_API_KEY for BaseBSCSCAN_API_KEY for BSC# Get WETH source on Ethereum
${CLAUDE_PLUGIN_ROOT}/scripts/crypto-contract-source.sh 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2
# Get Uniswap Router source on Polygon
${CLAUDE_PLUGIN_ROOT}/scripts/crypto-contract-source.sh 0xa5E0829CaCEd8fFDD4De3c43696c57F7D7A678ff polygon