> For the complete documentation index, see [llms.txt](https://docs.vechain.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vechain.org/developer-resources/how-to-build-on-vechain/utilities.md).

# Utilities

- [BigInt and Unit-Handling](https://docs.vechain.org/developer-resources/how-to-build-on-vechain/utilities/bigint-and-unit-handling.md)
- [Name Service Lookups](https://docs.vechain.org/developer-resources/how-to-build-on-vechain/utilities/name-service-lookups.md)