Market-maker fast path

Build requests with no network call, send in one step and track later.

trade.marketOpen reads prices, capacity and approvals before it sends. A quoting loop already knows those, so the fast path skips them.

await zeus.build.warm()

const built = zeus.build.marketOpen({
  market: 'ETH/USD',
  side: 'short',
  collateral: 200,
  payToken: 'USDC',
  size: 2000,
  referencePrice: myMidPrice,
  slippage: 0.2
})

const { hash, requestKey } = await zeus.send(built)
const receipt = await zeus.track(requestKey)

• warm() caches the market list, the execution fee and the wallet’s next request indexes. After it, build.* makes no network call at all.
• built is { to, data, value, requestKey, kind }, ready for any signer. The request key is known before sending.
• referencePrice is the price the slippage limit is taken from, usually your own feed.
• The fast path pays in the collateral token: the market’s token or ETH for a Long, USDC for a Short. Use trade.marketOpen when a swap is needed.
• Each build advances the predicted request index, and a failed send gives it back. If you build a request and never send it, or send out of order, call warm() again; track asks for it by itself when a receipt shows another key.
• track follows a request sent with send, or any request when you pass { submitTx }.

build.marketClose works the same way for closes.