> For the complete documentation index, see [llms.txt](https://docs.jaspervault.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.jaspervault.io/development/architecture.md).

# Architecture

The Jasper Vault system is primarily governed by four main contracts:

1. **Issuance Module**: Manages fund flows.
2. **Option Module**: Manages all orders.
3. **Vault Manage Module**: Controls the actions and activities of various vaults.
4. **Option Service Module**: Handles option liquidations.

You may refer to the contract addresses provided below:

Sei EVM: 

{% embed url="<https://docs.jaspervault.io/~/changes/d6F24Etal8Wf8jH3WpwS/development/deployed-smart-contracts/sei-evm>" %}

Arbitrum:

{% embed url="<https://docs.jaspervault.io/~/changes/d6F24Etal8Wf8jH3WpwS/development/deployed-smart-contracts/arbitrum>" %}