Polymarket Copy Trading Bot

Skill by ara.so — Daily 2026 Skills collection.

A TypeScript bot that continuously monitors a target Polymarket wallet, detects trades in real time via REST polling and/or WebSocket, and mirrors BUY orders to your own account using the Polymarket CLOB SDK on Polygon mainnet.

What It Does

• Monitors a target wallet via Polymarket Data API (REST polling every ~2s) and optionally WebSocket
• Mirrors BUY trades only — SELL trades are detected but skipped by default
• Sizes copies using a configurable POSITION_MULTIPLIER (default 10%) with min/max caps
• Submits orders as FOK, FAK, or LIMIT via the Polymarket CLOB client
• Enforces risk limits — per-session and per-market notional caps
• Supports three auth modes — EOA (SIG_TYPE=0), Poly Proxy (SIG_TYPE=1), Poly Polymorphic (SIG_TYPE=2)