# Onboarding Event Sink enables you to forward events sent through EdgeTag to a custom server URL for delivery. To use Event Sink, you'll need to have a publicly accessible endpoint that can receive POST requests containing a JSON payload. ### Video Guide {% embed url="" %} ### Endpoint requirements Your endpoint URL should be able to receive POST requests containing JSON as the payload, and should respond with a `200 OK` response. If the response is not, `200` the event will be logged as failed in the channel errors, which you can inspect in the **Analytics** tab in your site view. --- # 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.edgetag.io/channels/event-sink/onboarding.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.