Polymarket - Scheduled Maintenance - Trading – Maintenance details

All systems operational

Scheduled Maintenance - Trading

Completed
Scheduled for August 05, 2026 at 4:30 AM – 4:50 AMUTC

Affects

Polymarket Web App

Under maintenance from 4:30 AM to 4:50 AM

Predictions

Under maintenance from 4:30 AM to 4:50 AM

Predictions Trading API (CLOB)

Under maintenance from 4:30 AM to 4:50 AM

Websocket (RTDS)

Under maintenance from 4:30 AM to 4:50 AM

Updates
  • Completed
    August 05, 2026 at 4:50 AMUTC
    Completed
    August 05, 2026 at 4:50 AMUTC
    Maintenance has completed successfully.
  • In progress
    August 05, 2026 at 4:27 AMUTC
    In progress
    August 05, 2026 at 4:27 AMUTC
    Maintenance is now in progress.
  • Planned
    August 04, 2026 at 10:49 PMUTC
    Planned
    August 04, 2026 at 10:49 PMUTC

    Scheduled maintenance for an infrastructure improvement for the price history service

    • Trading will be briefly disabled with some requests returning 503

    • Websocket messages for trades and orders (user and market channels) will also be under maintenance during this time


    Brief post-only window after restart (2 min) before normal matching resumes.

    Post-only: only orders explicitly set with postOnly: true are accepted. Regular limit orders without the flag, market orders, and any taking liquidity will be rejected. Cancels for existing orders will still go through.

    See POST /order API reference for the post-only flag