# Sample Callback Contract For issuers that do not have custom logic to implement in the callback function, but would like to receive Quote Tokens and pay out Payout Tokens from a standalone contract vs. a multi-sig or EOA, the [Sample Callback Contract](https://github.com/Bond-Protocol/bond-contracts/blob/master/src/BondSampleCallback.sol) has been implemented to facilitate this. This contract inherits the Base Callback and transfers the requested Payout Tokens to the Teller after confirming that the correct number of Quote Tokens have been transferred in. This contract relies on a good data trust assumption from the Teller. --- # 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://dev.bondprotocol.finance/smart-contracts/bond-system/callback/sample-callback-contract.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.