> For the complete documentation index, see [llms.txt](https://docs.union.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.union.finance/developers/peripheral-and-fun-contracts.md).

# Peripheral & Fun Contracts

## **UNION Referral & Register Helper**

UNION Referral is a smart contract suite designed to boost the UNION community through a robust referral system. It streamlines community growth by seamlessly integrating access control, referral tracking, and member registration processes.

<https://github.com/unioncredit/union-referral>

## ERC1155 Voucher

A smart contract that vouchers on receipt of an erc1155 token.

<https://github.com/unioncredit/union-v2-contracts/blob/master/contracts/peripheral/ERC1155Voucher.sol>

## Onchain Triggered Vouches

<https://github.com/unioncredit/union-vouchers/tree/master/packages/bulk-voucher>