# Upgrading a Node ### Upgrading a Node NashPoint's modular architecture allows Nodes to be extended with new functionality through routers and policies. All upgrades are optional and must pass through a multi-tiered permission system to ensure security. #### In This Section * [**Adding Routers**](/nashpoint/upgrading-a-node/adding-routers.md)\ How to add new protocol integrations and other functionality to a Node * [**Custom Router Development**](/nashpoint/upgrading-a-node/custom-router-development.md)\ Building and deploying custom DeFi integrations * [**Multi-Tier Permissioning**](/nashpoint/upgrading-a-node/multi-tier-permissioning.md)\ Understanding the security model for protocol upgrades Node owners have full control over which upgrades to accept, and existing configurations cannot be forcibly changed by protocol governance. --- # 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://nashpoint.gitbook.io/nashpoint/upgrading-a-node.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.