Ethplorer API serves balance, token list and supply data for Ethereum addresses and ERC-20 tokens over REST.
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The key travels as a query parameter. The published 'freekey' value is not a real secret but a shared evaluation key; because it is shared, its rate limit can be exhausted quickly and it should not be relied on in production. Coverage is limited to Ethereum mainnet and ERC-20 tokens; multi-chain wallet data needs an aggregated provider. Endpoints were verified with freekey on 2026-08-08.
Last verified: August 9, 2026
Public test lab configuration summary for this API.
https://api.ethplorer.io/Methods
Verified endpoint examples
/getAddressInfo/0xdAC17F958D2ee523a2206206994597C13D831ec7Address info
Returns the address ETH balance and the ERC-20 tokens it holds.
/getTokenInfo/0xdAC17F958D2ee523a2206206994597C13D831ec7Token info
Returns token name, symbol, supply and holder count.
/getTopTop tokens
Returns a token list ranked by the selected criterion.
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