> For the complete documentation index, see [llms.txt](https://docs.optty.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.optty.com/direct-api-orders.md).

# Direct API Orders

- [Overview](https://docs.optty.com/direct-api-orders/overview.md): Prior to processing an order, please review the "Universal Integration Features."
- [Environments](https://docs.optty.com/direct-api-orders/environments.md)
- [Postman](https://docs.optty.com/direct-api-orders/postman.md)
- [Sandbox Payment Method (Simulator)](https://docs.optty.com/direct-api-orders/sandbox-payment-method-simulator.md)
- [Create Access Token](https://docs.optty.com/direct-api-orders/create-access-token.md)
- [Order Flow](https://docs.optty.com/direct-api-orders/order-flow.md)
- [Customer Initiated Orders](https://docs.optty.com/direct-api-orders/order-flow/custom-integration-setup-and-integration.md)
- [Merchant Initiated Orders](https://docs.optty.com/direct-api-orders/order-flow/merchant-initiated-orders.md)
- [Options](https://docs.optty.com/direct-api-orders/order-flow/options.md)
- [GET /options](https://docs.optty.com/direct-api-orders/order-flow/options/get-options.md)
- [POST /orders](https://docs.optty.com/direct-api-orders/order-flow/post-orders.md): When a user selects an Optty integrated APM, you should send through the order via this method.
- [GET /orders](https://docs.optty.com/direct-api-orders/order-flow/get-orders.md)
- [POST /void](https://docs.optty.com/direct-api-orders/order-flow/post-void.md)
- [POST /capture](https://docs.optty.com/direct-api-orders/order-flow/post-capture.md)
- [POST /orders/{reference}/refund](https://docs.optty.com/direct-api-orders/order-flow/post-orders-reference-refund.md)
- [GET /orders/{reference}/refund](https://docs.optty.com/direct-api-orders/order-flow/get-orders-reference-refund.md)