We will be performing scheduled maintenance on Thursday, October 22, from 08:00 – 09:00 UTC. Trading may be temporarily unavailable during this time; cancels keep working. Retail WebSocket connections will drop once - reconnect and resubscribe.
No breaking changes. No API schema, error-code, or authentication changes, and nothing needs to change in your client before the deploy. One behaviour change if you create or delete proxies programmatically: always sign create/delete-proxy with the account's main wallet -signing with a trading key now creates a separate account instead of returning a 400. Read-only (read-only: labelled) keys are now refused on the four secret-only writes. New: public GET /v1/info/builder-stats, builder display names, and first_fill_at on competition leaderboards. The ~1 ms median latency floor present since 20 October goes away with this rollout.
Full changelog: https://docs.polymarket.com/changelog/perps#oct-22-2026
