Zero fee on this build. Not a promise.

Local and testnet baseline moves principal 1:1 — there is no protocol fee in the current contract at all, not even a zero-fee no-op path.

Current values

If a fee is added

If a fee is introduced before mainnet, it will be specified fully (payer, asset, rounding, recipient, cap) before the contract is frozen — never added retroactively to an order that's already been signed.