@mrfentmen/etherscan-mcp

etherscan-mcp

Query the Etherscan v2 API (free key; set ETHERSCAN_API_KEY; chainid default 1): ETH balance, transactions, ERC-20 transfers.

Tools

• get_balance — Native balance for an address.

• get_transactions — Recent normal transactions for an address.

• get_token_transfers — Recent ERC-20 transfers to or from an address.

• tx_status — Receipt status by hash.

• contract_abi — Verified ABI.

• contract_source — Verified source info.

• token_balance — ERC-20 balance.

• gas_oracle — Current gas tiers.

• eth_price — ETH/USD price.

• block_number — Latest block.

Source

etherscan-mcp

Premium tools

These tools need a license key:

• internal_transactions
• event_logs

Buy a key at https://mcp-marketplace.io/server/io-github-mrfentmen-etherscan-mcp and set it in your MCP client config:

"env": { "MCP_LICENSE_KEY": "mcp_live_..." }

The key is checked against MCP Marketplace, cached for 24 hours, and keeps working offline once one check has succeeded. Every other tool on this server stays free.