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The requester (taker) pays a fee on every match. The quoter (maker) pays nothing.
The taker fee is currently bps. It can change, so read fee_bps from each quote instead of hard-coding it.

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The rate is fixed per quote

Each quote’s fee_bps is set when the quote is created, and a match always uses the rate on the accepted quote. A rate change only affects new quotes. Requesters see the rate on GET /rfq/quote and on RFQOffer events. Quoters see it on GET /rfq/get-quotes. Each match on GET /rfq/matches records fee_bps and the fee_amount charged.

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Computing the fee

Amounts and prices are integers scaled by 1e6 (see wire formats). Both steps round down:
The requester pays the fee in USDC: Accepting returns 400 if the requester can’t cover their side, fee included.

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Worked example

Buy 5 YES tokens at 0.75: amount is 5000000 and price is 750000.
  • notional = floor(750000 × 5000000 / 1000000) = 3750000, or 3.75 USDC.
  • fee at bps = floor(3750000 × / 10000) = {Math.floor(3750000 * takerFeeBps / 10000)}.
  • The requester pays USDC and receives 5 YES tokens.

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In the ledger

Each fee is a separate fee entry on GET /custody/get-ledger, with the match id as its ref_id. A zero fee writes no entry.