# Docs by LangChain: LangSmith REST API

> Markdown index of the LangSmith REST API documentation.

## LangSmith REST API

- [Create annotation queue item status](https://docs.langchain.com/langsmith/smith-api/annotation_queues/create-annotation-queue-item-status.md)
- [List annotation queue items](https://docs.langchain.com/langsmith/smith-api/annotation_queues/list-annotation-queue-items.md)
- [Add annotation queue items](https://docs.langchain.com/langsmith/smith-api/annotation_queues/add-annotation-queue-items.md)
- [Get the annotation queue item count](https://docs.langchain.com/langsmith/smith-api/annotation_queues/get-the-annotation-queue-item-count.md)
- [Delete annotation queue items](https://docs.langchain.com/langsmith/smith-api/annotation_queues/delete-annotation-queue-items.md)
- [Update an annotation queue item](https://docs.langchain.com/langsmith/smith-api/annotation_queues/update-an-annotation-queue-item.md)
- [Get annotation queue item placement](https://docs.langchain.com/langsmith/smith-api/annotation_queues/get-annotation-queue-item-placement.md)
- [Add a reviewer to an annotation queue](https://docs.langchain.com/langsmith/smith-api/annotation_queues/add-a-reviewer-to-an-annotation-queue.md)
- [Remove a reviewer from an annotation queue](https://docs.langchain.com/langsmith/smith-api/annotation_queues/remove-a-reviewer-from-an-annotation-queue.md)