etherscan-api

name	etherscan-api
description	Use when you need to query Etherscan API V2 for onchain activity, contract metadata, ABI/source retrieval, proxy implementation discovery, and transaction/log analysis across EVM chains.

Etherscan API V2

Overview

Use this skill to fetch onchain data from Etherscan-compatible explorers using the unified V2 API.

Core model:

• One base URL: https://api.etherscan.io/v2/api
• One API key
• Switch chains via chainid

Explorer URLs relevant to this workspace:

• Ethereum mainnet: https://etherscan.io/
• Ethereum hoodi: https://hoodi.etherscan.io/
• Taiko mainnet: https://taikoscan.io/
• Taiko hoodi: https://hoodi.taikoscan.io/

Read first:

• references/network-map.md
• references/endpoint-cheatsheet.md
• references/rate-limits.md
• references/explorer-url-patterns.md

Required Inputs

Collect these before querying:

• ETHERSCAN_API_KEY
• Target chainid
• Address / tx hash / block range
• Endpoint intent (activity, logs, source, ABI, status)

Deterministic Workflow

1. Pick chainid from references/network-map.md.
2. Choose endpoint by intent from references/endpoint-cheatsheet.md.
3. Build request on https://api.etherscan.io/v2/api with required params.