Polymarket - Scheduled CLOB maintenance – Maintenance details

All systems operational

SEP27

Scheduled CLOB maintenance

CompletedSeptember 27, 2026 at 4:00 AM – 5:00 AMUTC

Affects

Predictions

Under maintenance from 4:00 AM to 5:00 AM

Predictions Trading API (CLOB)

Under maintenance from 4:00 AM to 5:00 AM

Updates
  • Completed
    September 27, 2026 at 5:00 AMUTC
    Completed
    September 27, 2026 at 5:00 AMUTC
    Maintenance has completed successfully
  • In progress
    September 27, 2026 at 4:00 AMUTC
    In progress
    September 27, 2026 at 4:00 AMUTC
    Maintenance is now in progress
  • Planned
    September 27, 2026 at 12:34 AMUTC
    Planned
    September 27, 2026 at 12:34 AMUTC

    A scheduled CLOB release requires a brief restart, with downtime of up to ~10 minutes. Order placement, cancels, and fills may be temporarily unavailable.