# NDI Metadata **NDI includes the ability to send XML formatted metadata messages between NDI senders and receivers using several different methods.** {% hint style="info" %} If you're interested you can check out our Github repository of for [Metadata here](https://github.com/NDIConnected/ndi-docs-metadata) {% endhint %} This is a powerful mechanism that can be used to communicate status, provide for remote control, and many other purposes. In particular, the ability to send messages bidirectionally between NDI senders and receivers allows NDI to simplify workflows that would be significantly more complex if implemented with other audio/video streaming protocols. The following documentation explains how to utilize the metadata capabilities of NDI and includes all standard metadata elements developed to date. As new use cases emerge, expect this list of standards to expand. {% hint style="warning" %} We recommend that you use an XML Linter of your choice to prevent any potential syntax errors {% 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.ndi.video/all/developing-with-ndi/ndi-metadata.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.