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

# SDK Reference

- [Overview](https://clanker.gitbook.io/documentation/sdk-reference/sdk-reference.md)
- [Core Utilities](https://clanker.gitbook.io/documentation/sdk-reference/index.md)
- [V4 — Clanker Class](https://clanker.gitbook.io/documentation/sdk-reference/v4.md)
- [V3 — Clanker Class](https://clanker.gitbook.io/documentation/sdk-reference/v3.md)
- [V4 Extensions](https://clanker.gitbook.io/documentation/sdk-reference/extensions.md)
- [Legacy Fee Claims](https://clanker.gitbook.io/documentation/sdk-reference/legacyfeeclaims.md)