Project Details

Polyphemus

Production Polymarket trading bot with maker orders, arb engine, and self-tuning

person Solo developer schedule 7 days

What I Built

Designed and built entire system from scratch: signal detection, order execution, position management, exit strategies, arb engine, self-tuner, dashboard, and deployment pipeline

Key Outcomes

4,000 LOC Codebase (21 production Python modules)

30+ Bugs Fixed (including 8 critical production bugs)

4 Strategies Tested (copy-trade, momentum, arb, early entry)

5 Research Reports (DARIO-powered strategy analysis)

Tech Stack

Pythonasyncioaiohttppy_clob_clientBinance WSsystemd

Project Overview

A production-grade Polymarket trading bot built from scratch in Python. Trades 15-minute crypto binary options (BTC/ETH/SOL) using Binance momentum signals and maker orders (zero fees + rebates). Features include an arbitrage engine, adaptive self-tuner with Kelly-optimal position sizing, automatic position redemption, real-time dashboard, and 24/7 robustness with systemd watchdog integration. Deployed on a DigitalOcean VPS with automated patching via SSH. 30+ bugs discovered and fixed across two major versions.

Built For

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Quantitative traders and bot developers

Polymarket 15-min markets move fast and require automated execution with sophisticated risk management

Key Features

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Binance Momentum Signals

Real-time 1s kline WebSocket feed detects >0.3% moves in 60s windows

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Arbitrage Engine

Scans for sum-to-one arb opportunities across BTC/ETH/SOL pairs

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Adaptive Self-Tuner

Kelly-optimal sizing with circuit breakers and drawdown kill switch

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24/7 Production Ops

systemd watchdog, exponential backoff, session rotation, health monitoring

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Challenge Solved

Building a profitable automated trading system on Polymarket binary markets while navigating market microstructure, latency constraints (100ms to London CLOB), and binary payoff asymmetry requiring 67%+ win rate at typical entry prices.

Key Learnings

school Binary payoff asymmetry makes directional betting mathematically challenging — need 67% WR at $0.67 entry
school Market makers price in Binance momentum within milliseconds — retail latency is a structural disadvantage
school Exit execution (79% WR on resolution, 100% on profit target) is where real edge exists, not entry prediction
school Non-fatal DB operations must never block critical cleanup like position store removal