> ## Documentation Index
> Fetch the complete documentation index at: https://cosmos-docs-selective-ibc-merge.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Setting Rate Limits

> Rate limits are set through a governance-gated authority on a per denom, and per channel / client basis. To add a rate limit, the MsgAddRateLimit message must be executed which includes:

Rate limits are set through a governance-gated authority on a per denom, and per channel / client basis. To add a rate limit, the [`MsgAddRateLimit`](https://github.com/cosmos/ibc-go/blob/main/modules/apps/rate-limiting/types/msgs.go#L26-L34) message must be executed which includes:

* Denom: the asset that the rate limit should be applied to
* ChannelOrClientId: the channelID for use with IBC classic connections, or the clientID for use with IBC v2 connections
* MaxPercentSend: the outflow threshold as a percentage of the `channelValue`. More explicitly, a packet being sent would exceed the threshold quota if: (Outflow - Inflow + Packet Amount) / channelValue is greater than MaxPercentSend
* MaxPercentRecv: the inflow threshold as a percentage of the `channelValue`
* DurationHours: the length of time, after which the rate limits reset

## Updating, Removing or Resetting Rate Limits

* If rate limits were set to be too low or high for a given channel/client, they can be updated with [`MsgUpdateRateLimit`](https://github.com/cosmos/ibc-go/blob/main/modules/apps/rate-limiting/types/msgs.go#L81-L89).
* If rate limits are no longer needed, they can be removed with [`MsgRemoveRateLimit`](https://github.com/cosmos/ibc-go/blob/main/modules/apps/rate-limiting/types/msgs.go#L136-L141).
* If the flow counter needs to be resent for a given rate limit, it is possible to do so with [`MsgResetRateLimit`](https://github.com/cosmos/ibc-go/blob/main/modules/apps/rate-limiting/types/msgs.go#L169-L174).