# GumBar Staking Users have the option to stake their Collection Keys or gNFTs to earn a portion of the swap fees generated from a specific collection. GBT or gNFT is staked in the GumBar contract. Users can unstake or claim their rewards at any time. Yield is paid in the form of base asset and GBT, for example ETH and GBT. This is real yield that comes from swap and redemption fees on a collections respective bonding curve and Gumball Machine. --- # 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://gum-ball.gitbook.io/gumball-protocol/core-concepts/gumbar.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.