# Voice Agents SDK documentation (/en/api-reference/api-ref/server-sdk/documentation-versions)

> For AI agents: see the complete documentation index at [llms.txt](/llms.txt).

Choose the documentation for the API you use:

- [Main — Voice Agent API](/en/api-reference/api-ref/server-sdk/python)
- [Preview — Conversational AI Platform](/en/api-reference/api-ref/server-sdk/platform/python)

This entry restores the same Main or Preview selection as the guides and REST
reference. Direct SDK links always open their specified edition.