chainscan
统一多链探索器访问并提供 ABI/交易/事件等关键链上数据，便于链上开发与审计。
需要 Etherscan API key 并进行外部网络请求
通过 Etherscan V2 统一 API（并以 Foundry cast 为后备）查询多链区块链数据。
帮你跨多个 EVM 链查链上数据：合约 ABI/源码、交易和回执、事件日志、余额、代币信息、合约创建者和油价等。用在要排查合约、核对交易、抓取 ABI 或验证合约时，一条 Etherscan.io 的 API key 就能查到多数链的数据，找不到时会回退到 Foundry cast。特别之处是统一的 Etherscan V2 接口覆盖多链，省去为每条链单独配置不同 explorer key 的麻烦。
▸ 展开 SKILL.md 英文原文
Multi-chain block explorer queries via Etherscan V2 unified API + Foundry cast fallbacks. Look up contract ABI/source, transactions, receipts, event logs, balances, token info, contract creation, gas prices, verify contracts across Ethereum, BSC, Polygon, Arbitrum, Optimism, Base, Avalanche, Sepolia and 60+ other chains. One API key, one endpoint, any chain. Triggers on: etherscan, bscscan, polygonscan, arbiscan, basescan, optimism explorer, snowtrace, scan API, block explorer, contract lookup, get ABI, get source code, verify contract, tx lookup, receipt lookup, event logs, contract creation, contract creator, token holders, gas oracle, abi fetch.
帮我安装这个 skill：https://raw.githubusercontent.com/avenoxai/avenoxskills/main/skills/chainscan/SKILL.mdcurl -fsSL "https://raw.githubusercontent.com/avenoxai/avenoxskills/main/skills/chainscan/SKILL.md"# Chainscan — Etherscan V2 unified explorer skill
Query any major EVM chain's block explorer via the Etherscan V2 unified API, with Foundry `cast` as a fallback for paid-tier endpoints. **One Etherscan.io API key works across every supported chain** through V2 — BscScan/PolygonScan/etc. keys do **not** work and are no longer needed.
> Etherscan V1 was deprecated **2025-08-15**. V2 is the only API path going forward.
## Configuration
```
Base URL: https://api.etherscan.io/v2/api
API key: {{vault:ETHERSCAN_API_KEY}}
Auth pattern: &apikey={{vault:ETHERSCAN_API_KEY}}
Chain selector: &chainid=<id> (REQUIRED on every call — no default)
Free tier: 3 req/sec, 100k req/