# Periphery Contracts Two periphery contracts are deployed around the Mangrove core contract to support the core, or to provide convenient methods for interacting with the core contract. * MgvReader provides easy to parse views on Mangrove's state. * MgvOracle can act as a gas/density oracle for Mangrove. --- # 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.mangrove.exchange/dev/protocol/technical-references/periphery-contracts.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.