Harmonyscan (Harmony One Block Explorer API) MCP Connector for Claude

Connect your AI agent to the Harmony One network via Harmonyscan. This MCP server allows for deep inspection of the Harmony blockchain, from simple balance checks to complex smart contract analysis.

What you can do

• Account Data — Fetch ONE balances for single or multiple addresses instantly using get_balance and get_balance_multi.
• Transaction History — List normal, internal, and HRC20 token transactions with full metadata via get_tx_list and get_token_tx.
• Smart Contract Auditing — Retrieve verified source code and ABIs for on-chain contracts with get_source_code and get_abi.
• Network Insights — Monitor block rewards, ONE supply, and current market prices using get_one_supply and get_one_price.
• Transaction Status — Verify execution and receipt status for any transaction hash with get_status.

How it works

1. Subscribe to this server
2. Enter your Harmonyscan API Key
3. Start querying the Harmony blockchain from Claude, Cursor, or any MCP-compatible client

No more manual searching through block explorers. Your AI acts as a blockchain analyst, providing real-time data on addresses, contracts, and network health.

Who is this for?

• Web3 Developers — quickly fetch contract ABIs and source code directly in your IDE to speed up integration.
• Crypto Analysts — automate the tracking of whale movements and token transfers across the Harmony ecosystem.
• DeFi Users — check transaction statuses and wallet balances through simple natural language commands.