# Docs by LangChain: LangSmith REST API

> Markdown index of the LangSmith REST API documentation.

## LangSmith REST API

- [List TTL settings](https://docs.langchain.com/langsmith/smith-api/ttl-settings/list-ttl-settings.md)
- [Upsert TTL settings](https://docs.langchain.com/langsmith/smith-api/ttl-settings/upsert-ttl-settings.md)
- [Get workspace TTL settings](https://docs.langchain.com/langsmith/smith-api/ttl-settings/get-workspace-ttl-settings.md)
- [Update workspace TTL settings](https://docs.langchain.com/langsmith/smith-api/ttl-settings/update-workspace-ttl-settings.md)