# Rate Limiter ### Mint/Redeem Rate Limiter To limit the worst case exposure of USDV to the technical issues of underlying assets, we install a rate limiter to both the minting and redemption process of assets. The Rate Limiter is designed as a token bucket with a capacity and per second refill rate. ``` limiter_budget = min(capacity, remaining + refill_rate * time_lapsed) ``` Rate limiter parameters can be found [here](/docs/concepts/parameters.md). For example, if the underlying asset (e.g. X token) contract has a bug that create Y quantity of tokens, and the minting rate limiter's capacity is Z, then its maximum impact to USDV is limited to Z plus the time-based refilling before we noticed the problem and pause the asset. ### Cross-chain Rate Limiter To limit the exposure USDV has on any single chain, especially relatively new chains, we install a rate limiter to limit their Net Outbound. The rate limiter works the same as [Mint/Redeem Rate Limiter](#mint-redeem-rate-limiter). Rate limiter overview: * Outbound token transfers from a chain consume part of that chain's rate limit. * Inbound token transfers to a chain refill part of that chain's rate limit. Rate limiter parameters can be found [here](/docs/concepts/parameters.md). --- # 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.usdv.money/docs/technical-reference/risk-control.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.