---
title: "Create thread run"
method: POST
path: "/v1/fleet/threads/{thread_id}/runs"
tags: ["fleet threads"]
---

# Create thread run

`POST /v1/fleet/threads/{thread_id}/runs`

Starts a run on the thread. The request body must include `assistant_id` (the assistant to execute). Include run inputs and options in the body as supported by this API.

## Path parameters

- `thread_id` string, required

## Response `200`

OK

- object

## Other responses

- `201` — Created
- `400` — Bad Request
- `401` — Unauthorized
- `403` — Forbidden
- `404` — Not Found
- `502` — Bad Gateway

---

[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/revisions/a0acb3a6a101/schema)