> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sei.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Cosmos SDK (Deprecated)

> Cosmos SDK and CosmWasm functionality on Sei is deprecated in favor of EVM-only per SIP-3.

<Danger>
  **Deprecation Notice**

  Cosmos SDK and CosmWasm functionality is being deprecated in favor of EVM-only. For more details, see [SIP-3](https://github.com/sei-protocol/sips/blob/main/sips/sip-3.md) and [Proposal 99](https://www.mintscan.io/sei/proposals/99).

  In addition, [Proposal 115](https://www.mintscan.io/sei/proposals/115) disables CosmWasm code uploads (`MsgStoreCode`) and contract instantiations (`MsgInstantiateContract`) chain-wide. No new CosmWasm contracts can be deployed; only `execute` and `query` against pre-existing contracts remain available via the [CosmWasm precompile](/evm/precompiles/cosmwasm-precompiles/cosmwasm).

  [Proposal 116](https://www.mintscan.io/sei/proposals/116) additionally disables inbound IBC transfers. After this passes and is activated, IBC assets bridged from Cosmos chains can no longer arrive on Sei. See the [SIP-03 Migration Guide](/learn/sip-03-migration) for affected assets and migration routes.
</Danger>