# FAQ Does my application contract have to inherit from a specific contract to work with Glacis? > Although Glacis provides client contracts to facilitate the interactions with the router, they only requirement for a contract to use Glacis is to implement the GlacisClient interface. Can I send tokens with Glacis? > Glacis supports passing cross-chain tokens of the [XERC20](https://www.xerc20.com/) standard via the SimpleTokenMediator. If you would like to send preexisting tokens, check out the Airlift product. --- # 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.glacislabs.com/glacis-core/troubleshooting/faq.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.