Polymarket Says CLOB API Maintenance Disrupted Trading Functions

Polymarket states that a CLOB API issue disrupted trading functions, with a fix being deployed and a planned restart at 13:10 UTC on May 29, while other core services remained operational.

29d ago

Summary

Polymarket said trading functions experienced an outage tied to maintenance and an issue affecting its CLOB API. The team stated that it identified the cause of the problem and was deploying a fix, with a planned CLOB restart at 13:10 UTC on May 29. According to the update, the website, Markets API, Polygon RPC, authentication services, and Sports API remained operational, indicating the disruption was concentrated in the trading-related order book system. Polymarket directed users to its official status page for real-time updates.

Terms & Concepts

CLOB API: An application interface tied to a central limit order book, which matches buy and sell orders based on price and time priority.
Polymarket: A crypto-based prediction market platform where users trade on the outcomes of real-world events.
Polygon RPC: Remote procedure call access to the Polygon blockchain, typically used to read blockchain data or submit transactions through connected services.