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This page walks through the wallet-centric Foundational endpoint currently supported on solana-mainnet: SPL token balances.

Balances (SPL + native SOL)

Returns SPL token holdings plus native SOL with USD pricing where available.
curl -X GET "https://api.covalenthq.com/v1/solana-mainnet/address/4ZJhPQAgUseCsWhKvJLTmmRRUV74fdoTpQLNfKoekbPY/balances_v2/" \
  -H "Authorization: Bearer $GOLDRUSH_API_KEY"
Each item carries the SPL mint as contract_address, decimals from the Mint account, and quote in USD where pricing exists. The wrapped-SOL row (So111…) is the native balance. Reference: get-token-balances-for-address.

SPL transfer history

SPL transfer history is not available on the Foundational REST API for Solana today. For decoded SPL transfers, use the warehouse transfers normalizer.