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Advanced RFQ (RFQA) is a feature built on top BebopRouter contract, that wraps the regular swap and adds two capabilities for makers:
  • On-chain toxic-flow protection:
    • toxic-flow checker that makes predicted-toxic swaps unprofitable, so they don’t execute.
    • oracle slippage protection that refunds you when the market moves against you between signing and execution, while letting you keep positive slippage.
  • Maker pre- and post-hooks: Arbitrary maker logic the router runs in the same transaction as the swap, letting you:
    • Mint a liquid-staking, wrapped, or RWA token as a pre-hook so the settlement contract can pull it.
    • Borrow or redeem from a lending protocol (e.g., Aave, Morpho) as a pre-hook, then re-supply leftovers as a post-hook.
    • Wrap or convert the token you receive as a post-hook.
    • Any other on-chain logic you can implement in a contract.
It is backwards compatible with your existing integration: on-chain protection is applied automatically and hooks are optional.

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What’s different?

We are using the same settlement contract underneath and do not introduce any breaking changes to the overall flow, so a request coming from RFQA looks like a normal taker_quote request, except:
  • taker identity:
    • source is rfqa,
    • taker_address is the BebopRouter contract 0xBeb0009ACa35087ce7cCF11637E24dd1Aad3bf2A,
    • receiver is also the router, since the router is the immediate recipient of your maker tokens.
  • swap flow: the contract pulls maker tokens, applies fees and slippage, and forwards the remainder to the user; the order signing mechanism remains unchanged.
  • new accounting fields in Trade history API and the Trades WebSocket :
    • onchain_maker_amount: what actually left your wallet, net of the refund.
    • refunded_maker_amount: your share of the recovered slippage.

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Example

This trade swaps 18 USDC to WETH, with the maker paying out WETH.
  • At signing, the oracle reference (blended with the Binance price) was 1777.258 USDC/WETH.
  • By execution, about two blocks (~24s) later, the oracle mid had risen to 1779.710 USDC/WETH, +0.1379% above the reference price.
  • The router charged 13.79 bps of slippage and refunded the maker’s share.