# Docs by LangChain: LangSmith REST API

> Markdown index of the LangSmith REST API documentation.

## LangSmith REST API

- [List repos](https://docs.langchain.com/langsmith/smith-api/repos/list-repos.md)
- [Create repo](https://docs.langchain.com/langsmith/smith-api/repos/create-repo.md)
- [Delete repos](https://docs.langchain.com/langsmith/smith-api/repos/delete-repos.md)
- [Get repo](https://docs.langchain.com/langsmith/smith-api/repos/get-repo.md)
- [Update repo](https://docs.langchain.com/langsmith/smith-api/repos/update-repo.md)
- [Delete repo](https://docs.langchain.com/langsmith/smith-api/repos/delete-repo.md)
- [Fork repo](https://docs.langchain.com/langsmith/smith-api/repos/fork-repo.md)
- [List repo tags](https://docs.langchain.com/langsmith/smith-api/repos/list-repo-tags.md)
- [Optimize prompt job](https://docs.langchain.com/langsmith/smith-api/repos/optimize-prompt-job.md)