exploring-blockchain-data

name	exploring-blockchain-data
description	Process query and analyze blockchain data including blocks, transactions, and smart contracts. Use when querying blockchain data and transactions. Trigger with phrases like "explore blockchain", "query transactions", or "check on-chain data".
allowed-tools	Read, Write, Edit, Grep, Glob, Bash(crypto:explorer-*)
version	1.30.0
author	Jeremy Longshore <[e-mail]>
license	MIT
tags	["crypto","exploring-blockchain"]
compatibility	Designed for Claude Code, also compatible with Codex and OpenClaw

Exploring Blockchain Data

Overview

Query and analyze blockchain data across multiple EVM-compatible networks including Ethereum, Polygon, Arbitrum, Optimism, and BSC. Supports transaction lookups, address balance checks, block inspection, token balance queries, transaction history retrieval, and whale wallet tracking via a unified CLI.

Prerequisites

• Python 3.8+ with requests and web3 libraries installed (pip install requests web3)
• Etherscan API key (free tier provides 5 requests/second; set via ETHERSCAN_API_KEY environment variable)
• Optional: API keys for Polygonscan, Arbiscan, and other chain-specific explorers for higher rate limits
• blockchain_explorer.py CLI script, chain_client.py, and token_resolver.py modules available in the plugin directory
• RPC endpoint access (public endpoints work; dedicated providers like Alchemy, Infura, Chainstack, or QuickNode recommended for reliability)

Instructions

1. Set the Etherscan API key as an environment variable: export ETHERSCAN_API_KEY=<key> to unlock higher rate limits beyond the default 5 requests/second.
2. Run python blockchain_explorer.py tx <hash> to look up a transaction by hash, returning status, block number, from/to addresses, value transferred, and gas details.
3. Append --detailed to the transaction query to decode the function call, identify the interacting protocol, and display input parameters.
4. Specify --chain polygon, --chain arbitrum, or --chain bsc to query transactions on alternative EVM chains when the hash is not found on Ethereum.
5. Run python blockchain_explorer.py address <address> to check the native token balance and total transaction count for a wallet.
6. Add --history --limit 50 to the address query to retrieve the most recent 50 transactions with timestamps, values, and counterparties.
7. Add --tokens to the address query to list all ERC-20 token holdings with balances, symbols, and USD values via CoinGecko price resolution.
8. Run python blockchain_explorer.py block latest to inspect the most recent block, or python blockchain_explorer.py block <number> for a specific block.
9. Run python blockchain_explorer.py token <wallet> <contract> to check the balance of a specific ERC-20 token at a wallet address, with automatic decimal and symbol resolution.