> For the complete documentation index, see [llms.txt](https://docs.unizen.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.unizen.io/on-chain-contracts-get-started.md).

# On-Chain Contracts - Get Started

- [Integration with Unizen Contracts for Token Swapping](https://docs.unizen.io/on-chain-contracts-get-started/integration-with-unizen-contracts-for-token-swapping.md): By following these steps, you can seamlessly interact with Unizen’s API and integrate token swapping functionality into your smart contract. This guide provides a comprehensive approach, ensuring both
- [Registering Errors on Smart Contract Calls](https://docs.unizen.io/on-chain-contracts-get-started/registering-errors-on-smart-contract-calls.md)