Files
polymarket-terminal/src/services/mmExecutor.js
T
direkturcrypto d3e5567c97 feat: MM adaptive cut-loss with profit floor
When one leg fills, instead of immediately market-selling the unfilled
leg, enter a continuous monitoring loop that:
- Places a limit sell only when price >= minAdaptivePrice floor
  (floor = mmAdaptiveMinCombined - filledLegPrice, default combined 1.20)
- Chases price upward (>2% improvement → re-place limit higher)
- Cancels limit on dip >5% or below floor, then waits for recovery
- Market-sells only as last resort when CL time is reached

New config: MM_ADAPTIVE_CL (toggle), MM_ADAPTIVE_MIN_COMBINED (floor),
MM_ADAPTIVE_MONITOR_SEC (poll interval). Legacy immediate market-sell
path preserved when MM_ADAPTIVE_CL=false.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-02-25 02:34:45 +07:00

675 lines
30 KiB
JavaScript

/**
* mmExecutor.js
* Executes the market-maker strategy for a single Bitcoin 5-minute market:
* 1. Call CTF splitPosition — deposit USDC, receive equal YES+NO tokens at $0.50 flat
* 2. Place GTC limit sells at mmSellPrice for both YES and NO
* 3. Monitor until both fills or cut-loss time triggers
* 4. On cut-loss:
* - If NEITHER side filled → mergePositions (burn YES+NO, recover USDC, zero loss)
* - If ONE side already sold → cancel the other, market-sell remaining tokens
*/
import { Side, OrderType } from '@polymarket/clob-client';
import { ethers } from 'ethers';
import config from '../config/index.js';
import { getClient, getUsdcBalance, getPolygonProvider } from './client.js';
import { splitPosition, mergePositions } from './ctf.js';
import logger from '../utils/logger.js';
// CTF contract for on-chain balance queries
const CTF_ADDRESS = '0x4D97DCd97eC945f40cF65F87097ACe5EA0476045';
const CTF_BALANCE_ABI = ['function balanceOf(address account, uint256 id) view returns (uint256)'];
/**
* Get actual on-chain ERC1155 token balance for the proxy wallet.
* Used before market-sell to avoid 'not enough balance' errors from partial fills.
*/
async function getTokenBalance(tokenId) {
try {
const provider = await getPolygonProvider();
const ctf = new ethers.Contract(CTF_ADDRESS, CTF_BALANCE_ABI, provider);
const raw = await ctf.balanceOf(config.proxyWallet, tokenId);
return parseFloat(ethers.utils.formatUnits(raw, 6));
} catch {
return null; // fallback: caller will use pos.shares
}
}
const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
// In-memory store of all active MM positions (conditionId → position)
const activePositions = new Map();
export function getActiveMMPositions() {
return Array.from(activePositions.values());
}
// ── Order helpers ─────────────────────────────────────────────────────────────
async function placeLimitSell(tokenId, shares, price, tickSize, negRisk) {
if (config.dryRun) {
return { success: true, orderId: `sim-${Date.now()}-${tokenId.slice(-6)}` };
}
const client = getClient();
try {
const res = await client.createAndPostOrder(
{ tokenID: tokenId, side: Side.SELL, price, size: shares },
{ tickSize, negRisk },
OrderType.GTC,
);
if (!res?.success) return { success: false };
return { success: true, orderId: res.orderID };
} catch (err) {
logger.error('MM limit sell error:', err.message);
return { success: false };
}
}
async function cancelOrder(orderId) {
if (config.dryRun || !orderId || orderId.startsWith('sim-')) return true;
try {
const client = getClient();
await client.cancelOrder({ orderID: orderId }); // SDK expects { orderID } object
return true;
} catch (err) {
logger.warn('MM cancel order error:', err.message);
return false;
}
}
async function marketSell(tokenId, shares, tickSize, negRisk) {
if (config.dryRun) {
try {
const client = getClient();
const mp = await client.getMidpoint(tokenId);
const price = parseFloat(mp?.mid ?? mp ?? '0') || 0;
return { success: true, fillPrice: price };
} catch {
return { success: true, fillPrice: 0 };
}
}
const client = getClient();
try {
const res = await client.createAndPostMarketOrder(
{ tokenID: tokenId, side: Side.SELL, amount: shares, price: 0.01 },
{ tickSize, negRisk },
OrderType.FOK,
);
if (!res?.success) return { success: false, fillPrice: 0 };
return { success: true, fillPrice: parseFloat(res.price || '0') };
} catch (err) {
logger.error('MM market sell error:', err.message);
return { success: false, fillPrice: 0 };
}
}
// ── Order status check ────────────────────────────────────────────────────────
async function isOrderFilled(orderId, shares) {
if (!orderId || orderId.startsWith('sim-')) return false;
try {
const client = getClient();
const order = await client.getOrder(orderId);
if (!order) return false;
if (order.status === 'MATCHED') return true;
const matched = parseFloat(order.size_matched || '0');
return matched >= shares * 0.99;
} catch {
return false;
}
}
// For simulation: check if market price has reached the sell target
async function simPriceHitTarget(tokenId) {
try {
const client = getClient();
const mp = await client.getMidpoint(tokenId);
const price = parseFloat(mp?.mid ?? mp ?? '0');
return price >= config.mmSellPrice ? price : null;
} catch {
return null;
}
}
// Get current mid price for a token (0 on error)
async function getMidprice(tokenId) {
try {
const mp = await getClient().getMidpoint(tokenId);
return parseFloat(mp?.mid ?? mp ?? '0') || 0;
} catch { return 0; }
}
// ── Core monitoring loop ──────────────────────────────────────────────────────
async function monitorAndManage(pos) {
const label = pos.question.substring(0, 40);
while (true) {
const msRemaining = new Date(pos.endTime).getTime() - Date.now();
if (msRemaining <= 0) {
logger.warn(`MM: market expired — ${label}`);
pos.status = 'expired';
break;
}
// ── Check YES side ──────────────────────────────────────
if (!pos.yes.filled) {
let filled = false;
if (config.dryRun) {
const hitPrice = await simPriceHitTarget(pos.yes.tokenId);
if (hitPrice) { filled = true; pos.yes.fillPrice = hitPrice; }
} else {
filled = await isOrderFilled(pos.yes.orderId, pos.yes.shares);
if (filled) pos.yes.fillPrice = config.mmSellPrice;
}
if (filled) {
pos.yes.filled = true;
const pnl = (pos.yes.fillPrice - pos.yes.entryPrice) * pos.yes.shares;
logger.money(`MM${config.dryRun ? '[SIM]' : ''}: YES filled @ $${pos.yes.fillPrice.toFixed(3)} | P&L $${pnl.toFixed(2)}`);
}
}
// ── Check NO side ───────────────────────────────────────
if (!pos.no.filled) {
let filled = false;
if (config.dryRun) {
const hitPrice = await simPriceHitTarget(pos.no.tokenId);
if (hitPrice) { filled = true; pos.no.fillPrice = hitPrice; }
} else {
filled = await isOrderFilled(pos.no.orderId, pos.no.shares);
if (filled) pos.no.fillPrice = config.mmSellPrice;
}
if (filled) {
pos.no.filled = true;
const pnl = (pos.no.fillPrice - pos.no.entryPrice) * pos.no.shares;
logger.money(`MM${config.dryRun ? '[SIM]' : ''}: NO filled @ $${pos.no.fillPrice.toFixed(3)} | P&L $${pnl.toFixed(2)}`);
}
}
// ── Both filled → done ──────────────────────────────────
if (pos.yes.filled && pos.no.filled) {
pos.status = 'done';
const totalPnl = calcPnl(pos);
logger.money(`MM: BOTH sides filled! Total P&L: $${totalPnl.toFixed(2)} | ${label}`);
break;
}
// ── Exactly one leg filled → adaptive cut-loss (if enabled) ────────
if (config.mmAdaptiveCL && pos.yes.filled !== pos.no.filled) {
const unfilledKey = pos.yes.filled ? 'no' : 'yes';
await adaptiveLegCL(pos, unfilledKey);
break;
}
// ── Cut-loss time ────────────────────────────────────────────────────
if (msRemaining <= config.mmCutLossTime * 1000) {
logger.warn(`MM: cut-loss triggered (${Math.round(msRemaining / 1000)}s left) — ${label}`);
pos.status = 'cutting';
const oneLegFilled = pos.yes.filled !== pos.no.filled;
if (!config.mmAdaptiveCL && oneLegFilled) {
// Legacy: one side sold → immediate market sell on the other
const unfilledKey = pos.yes.filled ? 'no' : 'yes';
await cutLossOneLegFilled(pos, unfilledKey);
pos.status = 'done';
} else {
// Neither filled → cancel both + merge back to USDC
await cutLossNeitherFilled(pos);
}
break;
}
await sleep(10_000);
}
// Final P&L log
const totalPnl = calcPnl(pos);
const sign = totalPnl >= 0 ? '+' : '';
if (pos.status !== 'done') {
logger.info(`MM: strategy ended (${pos.status}) | P&L: ${sign}$${totalPnl.toFixed(2)} | ${label}`);
}
}
// Legacy one-leg CL: cancel unfilled order, immediate market sell (no patience)
async function cutLossOneLegFilled(pos, unfilledKey) {
const s = pos[unfilledKey];
const { tickSize, negRisk } = pos;
logger.warn(`MM: cancelling ${unfilledKey.toUpperCase()} limit order and market-selling...`);
await cancelOrder(s.orderId);
const actualShares = await getTokenBalance(s.tokenId);
const sellShares = actualShares !== null ? actualShares : s.shares;
if (sellShares < 0.001) {
logger.warn(`MM: ${unfilledKey.toUpperCase()} balance is 0 — already fully sold via partial fills`);
s.fillPrice = config.mmSellPrice;
s.filled = true;
return;
}
logger.warn(`MM: ${unfilledKey.toUpperCase()} actual balance: ${sellShares.toFixed(3)} shares (original: ${s.shares})`);
const result = await marketSell(s.tokenId, sellShares, tickSize, negRisk);
s.fillPrice = result.fillPrice;
s.filled = true;
const pnl = (s.fillPrice - s.entryPrice) * sellShares;
logger.warn(`MM: ${unfilledKey.toUpperCase()} cut @ $${s.fillPrice.toFixed(3)} | sold ${sellShares.toFixed(3)} sh | P&L $${pnl.toFixed(2)}`);
}
async function cutLossNeitherFilled(pos) {
const { conditionId } = pos;
// ── Best case: neither side sold → cancel both, merge back to USDC ──
logger.warn('MM: neither side filled — cancelling orders and merging back to USDC...');
await cancelOrder(pos.yes.orderId);
await cancelOrder(pos.no.orderId);
// Read actual on-chain balances (may differ from original if partially consumed)
const [yesActual, noActual] = await Promise.all([
getTokenBalance(pos.yes.tokenId),
getTokenBalance(pos.no.tokenId),
]);
// mergePositions needs equal amounts — use the minimum actual balance
const yesShares = yesActual ?? pos.yes.shares;
const noShares = noActual ?? pos.no.shares;
const mergeAmt = Math.min(yesShares, noShares);
if (mergeAmt < 0.001) {
logger.warn('MM: balances too low to merge — nothing to recover');
} else {
const recovered = await mergePositions(conditionId, mergeAmt);
logger.money(`MM: merge complete — recovered ~$${recovered.toFixed ? recovered.toFixed(2) : recovered} USDC (P&L ≈ $0)`);
}
// Mark both sides closed at entry price
pos.yes.fillPrice = pos.yes.entryPrice;
pos.yes.filled = true;
pos.no.fillPrice = pos.no.entryPrice;
pos.no.filled = true;
pos.status = 'done';
// Optional recovery buy (enabled via MM_RECOVERY_BUY=true)
await attemptRecoveryBuy(pos);
}
async function adaptiveLegCL(pos, unfilledKey) {
const s = pos[unfilledKey];
const { tickSize, negRisk } = pos;
const label = pos.question.substring(0, 40);
const pollMs = config.mmAdaptiveMonitorSec * 1000;
// ── Minimum floor: unfilled leg must sell at least this price ──────────────
// Ensures: filledLegPrice + unfilledLegPrice >= mmAdaptiveMinCombined
// Example: filledLeg=0.60, minCombined=1.20 → floor=0.60
// filledLeg=0.55, minCombined=1.20 → floor=0.65
const filledKey = unfilledKey === 'yes' ? 'no' : 'yes';
const filledLegPrice = pos[filledKey].fillPrice ?? config.mmSellPrice;
const minAdaptivePrice = Math.max(0, config.mmAdaptiveMinCombined - filledLegPrice);
logger.warn(`MM: one leg filled — starting adaptive CL for ${unfilledKey.toUpperCase()} | ${label}`);
logger.info(`MM adaptive CL: filled leg @ $${filledLegPrice.toFixed(3)} | min floor for combined ≥ $${config.mmAdaptiveMinCombined.toFixed(2)}: $${minAdaptivePrice.toFixed(3)}`);
// Cancel the unfilled leg's old GTC order immediately
await cancelOrder(s.orderId);
s.orderId = null;
// Read actual on-chain balance once — reused for all subsequent sell orders
const actualShares = await getTokenBalance(s.tokenId);
const sellShares = actualShares !== null ? actualShares : s.shares;
if (sellShares < 0.001) {
logger.warn(`MM adaptive CL: ${unfilledKey.toUpperCase()} balance is 0 — already fully sold`);
s.fillPrice = config.mmSellPrice;
s.filled = true;
pos.status = 'done';
return;
}
logger.info(`MM adaptive CL: monitoring ${unfilledKey.toUpperCase()} — limit only when price ≥ $${minAdaptivePrice.toFixed(3)}, market-sell only at CL time`);
let activeOrderId = null;
let activeLimitPrice = 0;
// ── Continuous monitoring loop ─────────────────────────────────────────────
// Every poll cycle:
// 1. CL time → cancel limit, market sell (last resort)
// 2. Check fill → done
// 3. Read current price
// 4a. Price < floor OR dropped >5% → cancel limit, keep watching
// 4b. Price improved >2% → cancel and re-place higher
// 5a. price >= floor → place/maintain limit at min(currentPrice, mmSellPrice)
// 5b. price < floor → no limit placed, log & wait (never sell below profit floor)
while (true) {
const msLeft = new Date(pos.endTime).getTime() - Date.now();
// ── CL time: last resort market sell ───────────────────────────────
if (msLeft <= config.mmCutLossTime * 1000) {
if (activeOrderId) {
await cancelOrder(activeOrderId);
activeOrderId = null;
}
break;
}
// ── Check fill ──────────────────────────────────────────────────────
if (activeOrderId) {
let filled = false;
if (config.dryRun) {
const hitPrice = await simPriceHitTarget(s.tokenId);
if (hitPrice) { filled = true; s.fillPrice = hitPrice; }
} else {
filled = await isOrderFilled(activeOrderId, sellShares);
if (filled) s.fillPrice = activeLimitPrice;
}
if (filled) {
const pnl = (s.fillPrice - s.entryPrice) * sellShares;
const combined = filledLegPrice + s.fillPrice;
logger.money(`MM adaptive CL: ${unfilledKey.toUpperCase()} limit filled @ $${s.fillPrice.toFixed(3)} | combined $${combined.toFixed(3)} | P&L $${pnl.toFixed(2)}`);
s.filled = true;
pos.status = 'done';
return;
}
}
// ── Read current price ──────────────────────────────────────────────
const currentPrice = await getMidprice(s.tokenId);
if (currentPrice <= 0) {
await sleep(pollMs);
continue;
}
const targetPrice = Math.min(currentPrice, config.mmSellPrice);
// ── Adjust or cancel active limit ───────────────────────────────────
if (activeOrderId) {
const belowFloor = currentPrice < minAdaptivePrice;
const droppedHard = currentPrice < activeLimitPrice * 0.95;
const priceImproved = targetPrice > activeLimitPrice * 1.02;
if (belowFloor || droppedHard) {
const reason = belowFloor
? `below floor $${minAdaptivePrice.toFixed(3)} (combined $${(filledLegPrice + currentPrice).toFixed(3)} < $${config.mmAdaptiveMinCombined.toFixed(2)})`
: `dropped >5% from limit $${activeLimitPrice.toFixed(3)}`;
logger.info(`MM adaptive CL: price $${currentPrice.toFixed(3)} ${reason} — cancelling limit, watching for recovery`);
await cancelOrder(activeOrderId);
activeOrderId = null;
activeLimitPrice = 0;
} else if (priceImproved) {
logger.info(`MM adaptive CL: price improved $${activeLimitPrice.toFixed(3)} → $${currentPrice.toFixed(3)} — raising limit to $${targetPrice.toFixed(3)}`);
await cancelOrder(activeOrderId);
activeOrderId = null;
activeLimitPrice = 0;
}
}
// ── Place limit only above the profitable floor ─────────────────────
if (!activeOrderId) {
if (currentPrice >= minAdaptivePrice) {
logger.info(`MM adaptive CL: placing limit sell @ $${targetPrice.toFixed(3)} (mid: $${currentPrice.toFixed(3)}, combined: $${(filledLegPrice + targetPrice).toFixed(3)}, ${Math.round(msLeft / 1000)}s left)`);
const result = await placeLimitSell(s.tokenId, sellShares, targetPrice, tickSize, negRisk);
if (result.success) {
activeOrderId = result.orderId;
activeLimitPrice = targetPrice;
}
} else {
logger.info(`MM adaptive CL: price $${currentPrice.toFixed(3)} below floor $${minAdaptivePrice.toFixed(3)} (combined $${(filledLegPrice + currentPrice).toFixed(3)}) — waiting for recovery (${Math.round(msLeft / 1000)}s left)`);
}
}
await sleep(pollMs);
}
// ── Fallback: market sell at CL time ───────────────────────────────────────
logger.warn(`MM adaptive CL: CL time reached — market-selling ${sellShares.toFixed(3)} ${unfilledKey.toUpperCase()} shares`);
const result = await marketSell(s.tokenId, sellShares, tickSize, negRisk);
s.fillPrice = result.fillPrice;
const pnl = (s.fillPrice - s.entryPrice) * sellShares;
const combined = filledLegPrice + s.fillPrice;
logger.warn(`MM adaptive CL: ${unfilledKey.toUpperCase()} market-sold @ $${s.fillPrice.toFixed(3)} | combined $${combined.toFixed(3)} | sold ${sellShares.toFixed(3)} sh | P&L $${pnl.toFixed(2)}`);
s.filled = true;
pos.status = 'done';
}
// ── Recovery buy ──────────────────────────────────────────────────────────────
/**
* After a cut-loss, optionally take a directional bet on the dominant side.
*
* Criteria (all must pass):
* 1. MM_RECOVERY_BUY=true in .env
* 2. One side's price is above MM_RECOVERY_THRESHOLD (default 70%)
* 3. That price is stable or rising over a 10-second sample (1 fetch/second)
* 4. Wallet balance is sufficient for the recovery size
*/
async function attemptRecoveryBuy(pos) {
if (!config.mmRecoveryBuy) return;
const { tickSize, negRisk } = pos;
const label = pos.question.substring(0, 40);
const recoverySize = config.mmRecoverySize > 0 ? config.mmRecoverySize : config.mmTradeSize;
const client = getClient();
logger.info(`MM recovery: monitoring prices for 10s | ${label}`);
// ── Sample both sides once per second for 10 seconds ─────────
const samples = { yes: [], no: [] };
for (let i = 0; i < 10; i++) {
for (const [key, tokenId] of [['yes', pos.yes.tokenId], ['no', pos.no.tokenId]]) {
try {
const mp = await client.getMidpoint(tokenId);
const price = parseFloat(mp?.mid ?? mp ?? '0') || 0;
samples[key].push(price);
} catch { /* skip */ }
}
if (i < 9) await sleep(1000);
}
// ── Determine eligible side ───────────────────────────────────
// Need: last price ≥ threshold AND last price ≥ first price (not declining)
let candidate = null;
for (const [key, tokenId] of [['yes', pos.yes.tokenId], ['no', pos.no.tokenId]]) {
const arr = samples[key];
if (arr.length < 2) continue;
const firstPrice = arr[0];
const lastPrice = arr[arr.length - 1];
if (lastPrice >= config.mmRecoveryThreshold && lastPrice >= firstPrice) {
candidate = { side: key.toUpperCase(), tokenId, price: lastPrice };
break;
}
}
if (!candidate) {
logger.info(`MM recovery: no eligible side — need price ≥ ${config.mmRecoveryThreshold} and rising/stable`);
return;
}
// ── Balance check ─────────────────────────────────────────────
if (!config.dryRun) {
const balance = await getUsdcBalance();
if (balance < recoverySize) {
logger.warn(`MM recovery: insufficient balance $${balance.toFixed(2)} < $${recoverySize} needed`);
return;
}
}
logger.trade(`MM recovery${config.dryRun ? '[SIM]' : ''}: buying ${candidate.side} @ $${candidate.price.toFixed(3)} | size $${recoverySize}`);
// ── Market buy ────────────────────────────────────────────────
let entryPrice = candidate.price;
let filledShares = recoverySize / entryPrice; // default estimate
if (config.dryRun) {
logger.money(`MM recovery[SIM]: bought ${filledShares.toFixed(3)} ${candidate.side} @ $${entryPrice.toFixed(3)}`);
} else {
try {
const res = await client.createAndPostMarketOrder(
{ tokenID: candidate.tokenId, side: Side.BUY, amount: recoverySize, price: 0.99 },
{ tickSize, negRisk },
OrderType.FOK,
);
if (!res?.success) {
logger.warn(`MM recovery: order not filled — ${res?.errorMsg || 'no fill'}`);
return;
}
entryPrice = parseFloat(res.price || String(candidate.price));
filledShares = parseFloat(res.takingAmount || String(recoverySize / entryPrice));
logger.money(`MM recovery: FILLED ${candidate.side} ${filledShares.toFixed(3)} sh @ $${entryPrice.toFixed(3)} | potential payout $${filledShares.toFixed(2)}`);
} catch (err) {
logger.error(`MM recovery: buy error — ${err.message}`);
return;
}
}
// ── Monitor for 30s — cut loss if price worsens ───────────────
logger.info(`MM recovery: holding ${candidate.side} — will cut if price < $${entryPrice.toFixed(3)} after 30s`);
await sleep(30_000);
// Skip second CL if market is already closed or about to close (< 5s left)
const msLeft = new Date(pos.endTime).getTime() - Date.now();
if (msLeft < 5_000) {
logger.info(`MM recovery: market closing — skipping 2nd CL, letting position resolve`);
return;
}
// Check current price
let currentPrice = entryPrice;
try {
const mp = await client.getMidpoint(candidate.tokenId);
currentPrice = parseFloat(mp?.mid ?? mp ?? String(entryPrice)) || entryPrice;
} catch { /* use entryPrice as fallback */ }
if (currentPrice >= entryPrice) {
logger.success(`MM recovery: price holding $${currentPrice.toFixed(3)} ≥ entry $${entryPrice.toFixed(3)} — keeping position`);
return;
}
// Price has worsened — cut loss
const priceDrop = ((entryPrice - currentPrice) / entryPrice * 100).toFixed(1);
logger.warn(`MM recovery: price dropped $${entryPrice.toFixed(3)} → $${currentPrice.toFixed(3)} (-${priceDrop}%) — cutting loss`);
if (config.dryRun) {
const simPnl = (currentPrice - entryPrice) * filledShares;
logger.warn(`MM recovery[SIM]: 2nd CL @ $${currentPrice.toFixed(3)} | P&L $${simPnl.toFixed(2)}`);
return;
}
try {
const sellRes = await client.createAndPostMarketOrder(
{ tokenID: candidate.tokenId, side: Side.SELL, amount: filledShares, price: 0.01 },
{ tickSize, negRisk },
OrderType.FOK,
);
if (sellRes?.success) {
const sellPrice = parseFloat(sellRes.price || String(currentPrice));
const pnl = (sellPrice - entryPrice) * filledShares;
logger.warn(`MM recovery: 2nd CL sold @ $${sellPrice.toFixed(3)} | P&L $${pnl.toFixed(2)}`);
} else {
logger.warn(`MM recovery: 2nd CL sell failed — ${sellRes?.errorMsg || 'no fill'} — position will resolve at close`);
}
} catch (err) {
logger.error(`MM recovery: 2nd CL sell error — ${err.message}`);
}
}
function calcPnl(pos) {
const yesPnl = pos.yes.filled
? (pos.yes.fillPrice - pos.yes.entryPrice) * pos.yes.shares
: 0;
const noPnl = pos.no.filled
? (pos.no.fillPrice - pos.no.entryPrice) * pos.no.shares
: 0;
return yesPnl + noPnl;
}
// ── Main entry point ──────────────────────────────────────────────────────────
export async function executeMMStrategy(market) {
const { asset, conditionId, question, endTime, yesTokenId, noTokenId, negRisk, tickSize } = market;
const tag = asset ? `[${asset.toUpperCase()}]` : '';
const label = question.substring(0, 40);
const sim = config.dryRun ? '[SIM] ' : '';
logger.info(`MM${tag}: ${sim}entering — ${label}`);
// ── Balance check ───────────────────────────────────────────
const totalNeeded = config.mmTradeSize * 2; // $10 total → 10 YES + 10 NO
if (!config.dryRun) {
const balance = await getUsdcBalance();
if (balance < totalNeeded) {
logger.error(`MM${tag}: insufficient balance $${balance.toFixed(2)} (need $${totalNeeded})`);
return;
}
}
// ── Split USDC into YES+NO via CTF splitPosition ────────────
// Deposit mmTradeSize*2 USDC → get mmTradeSize*2 YES + mmTradeSize*2 NO tokens
// Entry price is exactly $0.50 per token on both sides (no spread, no slippage)
logger.trade(`MM${tag}: ${sim}splitPosition $${totalNeeded} USDC → YES + NO @ $0.50`);
let shares;
try {
shares = await splitPosition(conditionId, totalNeeded, negRisk);
} catch (err) {
logger.error(`MM${tag}: splitPosition failed — ${err.message}`);
return;
}
const entryPrice = 0.50;
logger.info(`MM${tag}: split done — ${shares} YES + ${shares} NO @ $${entryPrice}`);
// ── Place limit sells ───────────────────────────────────────
logger.info(`MM${tag}: ${sim}placing limit sells @ $${config.mmSellPrice}`);
const yesSell = await placeLimitSell(yesTokenId, shares, config.mmSellPrice, tickSize, negRisk);
const noSell = await placeLimitSell(noTokenId, shares, config.mmSellPrice, tickSize, negRisk);
if (!yesSell.success || !noSell.success) {
logger.error(`MM${tag}: failed to place limit sells — cutting immediately`);
}
// ── Build position object ───────────────────────────────────
const pos = {
asset: asset || 'btc',
conditionId,
question,
endTime,
tickSize,
negRisk,
status: 'monitoring',
enteredAt: new Date().toISOString(),
yes: {
tokenId: yesTokenId,
shares,
entryPrice,
entryCost: config.mmTradeSize, // $5 per side
orderId: yesSell.orderId,
filled: !yesSell.success, // mark as needing cut if sell failed
fillPrice: null,
},
no: {
tokenId: noTokenId,
shares,
entryPrice,
entryCost: config.mmTradeSize,
orderId: noSell.orderId,
filled: !noSell.success,
fillPrice: null,
},
};
activePositions.set(conditionId, pos);
// ── Monitor (runs until done/cut/expired) ───────────────────
await monitorAndManage(pos);
activePositions.delete(conditionId);
}