Polymarket: how the prediction-market platform works

Polymarket is a decentralized prediction-market exchange where users buy outcome shares that pay $1 if they resolve YES and $0 if NO. Trading happens on a CLOB on Polygon using pUSD, with outcome tokens implemented via the Gnosis CTF and resolution by UMA. If you’re a trader asking “what is Polymarket?” this explains the mechanics and where automated tools like PolyArb fit into live arbitrage workflows.

Core mechanics of Polymarket

Polymarket runs a Central Limit Order Book (CLOB) on Polygon and uses pUSD (wrapped USDC) as the settlement asset; gas is sponsored via the Relayer. Markets are either binary (YES/NO) or multi-outcome; at fair value the outcome prices sum to $1. Outcome shares are ERC-1155 tokens minted and burned via CTF split/merge/redeem operations. Resolution uses the UMA optimistic oracle; disputes can delay settlement.

Why arbitrage exists on Polymarket

Brief inefficiencies appear because best-ask prices across outcomes can sum to less than $1. Intra-market arbitrage captures that edge by buying the complete set (or both binary legs) and later redeeming for $1 per winning token. Spreads on liquid markets are often small and fleeting; speed, fee awareness, and slip protection determine profit capture.

Where PolyArb fits: speed and guaranteed edge

PolyArb is an automated arbitrage bot built for Polymarket traders: $99/month, non-custodial, with 40ms latency versus ~800ms for free bots. It provides Telegram and Discord alerts and claims a $7.62 minimum guaranteed edge per trade. That positioning is about execution speed, monitoring many markets, and routing orders through the CLOB for rapid fills.

Practical risks and what to watch

No automated capture is unconditional: watch resolution risk (UMA disputes), partial fills, slippage, taker fees, and settlement timing. Geo-restrictions limit who can open orders from certain jurisdictions; VPN evasion is prohibited. Smart-contract and oracle risks also exist on decentralized platforms.

Should you use PolyArb with Polymarket?

If you trade frequently and need low-latency monitoring, PolyArb centralizes alerts and execution for arbitrage opportunities on Polymarket. It’s designed for traders who want non-custodial automation, faster fills, and multi-channel alerts—balanced against subscription cost and the operational risks noted above.

FAQ

What is Polymarket?

Polymarket is a decentralized prediction-market exchange on Polygon where users trade outcome shares in binary or multi-outcome markets using pUSD, with settlement via Gnosis CTF and UMA.

How does arbitrage on Polymarket work?

Intra-market arbitrage buys a complete set (or both binary legs) when the sum of best-ask prices is less than $1, locking the difference as edge; profits depend on fills, fees, and settlement.

What does PolyArb provide for Polymarket traders?

PolyArb offers a $99/month non-custodial bot with 40ms latency, Telegram and Discord alerts, and an advertised $7.62 minimum guaranteed edge per trade to help capture fleeting intra-market arbitrage.

Are there geographic limits to using Polymarket?

Yes. Polymarket blocks orders from many jurisdictions and uses regional restrictions; certain countries and regions cannot open new orders and VPN bypass is against terms of service.