# What does the Snap do? * Manage zero-knowledge certificates to hold your identity in self custody. * Generate zero-knowledge proofs of selective disclosures for * Compliance with dApp requirements * Keeping personal data private * Sybil resistance * Proof of personhood * Human centric voting * and many more use cases... * Always asks you for confirmation before disclosing personal data * Generate a holder commitment to bind a ZK certificate to an account owning it without revealing the link to the guardian. --- # 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.galactica.com/galactica-network-faq/6.-galactica-zk-vault-snap-for-metamask-devnet/what-does-the-snap-do.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.