We will be performing scheduled maintenance on Sunday, September 27, from 9:00 – 10:00 AM ET (13:00 – 14:00 UTC). Trading may be temporarily unavailable during this time.

This release adds three required fields to every fill (builder_fee, total_fee, settlement) - strict decoders must accept them before the deploy - and GET /v1/account/rewards now returns 400 for start_timestamp/end_timestamp. Please also accept two new order statuses (instrument_close_only, instrument_settled) and new instrument fields (close_only, settlement, display_symbol) that support instrument delisting; SBE consumers must accept schema 49. TWAP cancel/pause/list routes and position snapshots are new; TWAP entry, chase orders, GTD, partial TP/SL and builder attribution ship switched off. Market-maker websocket connections will drop once as the gateway rolls.

Full changelog: https://docs.polymarket.com/changelog/perps#sep-27-2026

Asset Delisting: Kioxia is being delisted

Close active positions by 12:00am UTC, Monday, Sept 28. Remaining positions will be automatically closed and settled.

The maintenance has been completed. All exchange operations are back to normal.

We are experiencing an unexpected downtime. Trading might not be available at the moment.

All exchange operations are back to normal. Apologies for the inconvenience.

We will be performing scheduled maintenance on Tuesday, September 29, from 08:00 – 09:00 UTC. Trading may be temporarily unavailable during this time.

No breaking changes. No API schema, SBE schema, error-code, or authentication changes, and nothing needs to change in your client before the deploy

All exchange operations are back to normal. Apologies for the inconvenience.

Scheduled maintenance has started. Expect up to 1h of downtime.

Scheduled maintenance is being extended by an additional 30 minute. Thank you for your patience

All exchange operations are back to normal. Apologies for the inconvenience.

We will be performing scheduled maintenance today, Tuesday, October 13, 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 SBE schema, error-code, or authentication changes, and nothing needs to change in your client before the deploy. API changes are additive only (leaderboard sort_by=roi and instrument fields, new public /v1/info/curated-lists); one semantic change: created_timestamp on GET /v1/account/withdrawals is now the approval time rather than on-chain confirmation (same name, type and units).

All exchange operations are back to normal. Apologies for the inconvenience.

We will be launching a new listing on [10/15] at 4 pm UTC.

- PRL

Rewards will start counting for this asset at launch.

PRL is now listed and available on the API

Rewards start at 4 pm UTC

We will be performing scheduled maintenance today, Tuesday, October 20, 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 to existing request or response fields. No authentication changes. Full changelog: https://docs.polymarket.com/changelog/perps#oct-20-2026

All exchange operations are back to normal. Apologies for the inconvenience.

We are currently in cancel-only mode while we address an issue with crossed order books. The team is actively working on a fix, and we expect to resume normal trading shortly. We'll share an update as soon as the issue is resolved. Appreciate your patience!

The issue has been resolved, and we're back to normal trading operations. All systems are healthy and operating as expected. Thank you for your patience!

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

All exchange operations are back to normal. Apologies for the inconvenience.