> ## Documentation Index
> Fetch the complete documentation index at: https://docs.polynode.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# TypeScript — Trading

## Trading

<Warning>
  **Polymarket V2 cutover: April 28, 2026 at \~11am UTC.** Set `exchangeVersion: "v2"` in your `TraderConfig` before cutover. V1 orders submitted after April 28 will be rejected with `order_version_mismatch`. Pass your V2 builder code (mint at [polymarket.com/settings?tab=builder](https://polymarket.com/settings?tab=builder)) via the `builder` field on each order. See the [V2 Migration Guide](/guides/v2-migration).
</Warning>

Order placement is available through the `PolyNodeTrader` class, which supports the Polymarket V2 exchange. See the [Trading reference](/sdks/trading) for full documentation, including wallet setup, order placement, and V2 PolyUSD wrapping.

See the [V2 Migration Guide](/guides/v2-migration) for details on the Polymarket V2 exchange upgrade.