Gas Station supports smart contract accounts (SCAs) on Arbitrum, Ethereum and Polygon PoS, and externally-owned accounts (EOAs) on Solana.
Arbitrum, Ethereum and Polygon PoS: As Circle utilizes ERC-4337 to enable gas sponsorship, Gas Station only supports SCA wallets created on these blockchains.
Solana: As Solana is not an EVM-compatible blockchain and does not support SCAs, Circle leverages the feePayer variable to enable transaction fee sponsorship. Gas Station only supports EOA wallets on Solana.