# Docs by LangChain: LangSmith REST API

> Markdown index of the LangSmith REST API documentation.

## LangSmith REST API

- [List evaluators](https://docs.langchain.com/langsmith/smith-api/evaluators/list-evaluators.md)
- [Create evaluator](https://docs.langchain.com/langsmith/smith-api/evaluators/create-evaluator.md)
- [Bulk delete evaluators](https://docs.langchain.com/langsmith/smith-api/evaluators/bulk-delete-evaluators.md)
- [Get evaluator spend](https://docs.langchain.com/langsmith/smith-api/evaluators/get-evaluator-spend.md)
- [Get evaluator](https://docs.langchain.com/langsmith/smith-api/evaluators/get-evaluator.md)
- [Delete evaluator](https://docs.langchain.com/langsmith/smith-api/evaluators/delete-evaluator.md)
- [Update evaluator](https://docs.langchain.com/langsmith/smith-api/evaluators/update-evaluator.md)