---
title: "Thread Preview"
method: GET
path: "/api/v1/runs/threads/{thread_id}"
tags: ["run"]
---

# Thread Preview

`GET /api/v1/runs/threads/{thread_id}`

Get preview of a thread.

## Path parameters

- `thread_id` string, required

## Query parameters

- `session_id` string, uuid, required
- `select` ThreadMessagesFormatType[], nullable
- `variables` string[], nullable

## Response `200`

Successful Response

- ThreadPreviewResponse — Response to preview a thread.
  - `thread_id` string, required
  - `previews` object, required

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.net/langchain-ai/apis/langsmith.md) · [All operations](https://skmtc.net/langchain-ai/apis/langsmith/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/langchain-ai/langsmith/versions/a0acb3a6a101/schema)