> For the complete documentation index, see [llms.txt](https://docs.holder.xyz/holder-api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.holder.xyz/holder-api/~/revisions/gDfIZFl5wGxV0PcmHORf/api-reference.md).

# API Reference

- [Contacts](https://docs.holder.xyz/holder-api/~/revisions/gDfIZFl5wGxV0PcmHORf/api-reference/contacts.md)
- [Contact Fields](https://docs.holder.xyz/holder-api/~/revisions/gDfIZFl5wGxV0PcmHORf/api-reference/contact-fields.md)
- [Tags](https://docs.holder.xyz/holder-api/~/revisions/gDfIZFl5wGxV0PcmHORf/api-reference/tags.md): Add ability to get, create, and apply tags from contacts
- [Merging Contacts](https://docs.holder.xyz/holder-api/~/revisions/gDfIZFl5wGxV0PcmHORf/api-reference/merging-contacts.md)
- [Traits](https://docs.holder.xyz/holder-api/~/revisions/gDfIZFl5wGxV0PcmHORf/api-reference/traits.md)