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The public RFQ and Aggregation APIs use client-submitted settlement. The quote APIs do not use an execution mode selector.

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EVM transactions

EVM quotes return a ready-to-broadcast tx object. Your integration signs the transaction and broadcasts it through your RPC provider. The transaction sender pays the network fee. EVM flow: Quote → Approve → Sign tx → Broadcast → Confirm Use the Standard approval type. Approve the approvalTarget from the quote before you broadcast the transaction.

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Solana RFQ transactions

Solana RFQ quotes return solana_tx and blockhash. Your integration signs solana_tx and broadcasts it before the blockhash expires. Solana flow: Quote → Sign solana_tx → Broadcast → Confirm See the RFQ API quickstart and Aggregation API quickstart for complete examples.