# Key Points {% hint style="info" %} This section describes how the **Source PSP should set up and send a Nexus payment**, using the Nexus APIs. \ A simpler, non-technical walkthrough of the user journey for the Sender is given in the [Nexus report (page 22)](https://www.nexusglobalpayments.org/wp-content/uploads/2025/03/Project-Nexus-Report-Phase-3.pdf). Further information on each step is given in the corresponding sections in the left-hand menu: * [Addressing and Proxy Resolution](/addressing-and-proxy-resolution/key-points.md) * [FX Provision](/fx-provision/key-points.md) * [Payment Processing](/payment-processing/key-points.md) * [Settlement Access Provision](/settlement-access-provision/key-points.md) * [Messaging & Translation](/messaging-and-translation/key-points.md) {% endhint %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.nexusglobalpayments.org/payment-setup/key-points.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.