---
title: "POST /v1/threads/{threadId}"
method: POST
path: "/v1/threads/{threadId}"
---

# POST /v1/threads/{threadId}

`POST /v1/threads/{threadId}`

## Path parameters

- `threadId` string, uuid, required

## Request body

- object
  - `metadata` object

## Response `200`

Langbase: Update thread v1

- object
  - `id` string, uuid, required
  - `object` 'thread', required
  - `created_at` string, required
  - `metadata` object

## Other responses

- `400` — Bad Request
- `500` — Internal Server Error

## Changes

- **2026-07-26** `a8ae3cd9597e` — 1 breaking
  - the `created_at` response's property type/format changed from `string`/`date` to `string`/`` for status `200`

[Change history](https://skmtc.dev/langbase/apis/langbase-api/changes/v1/threads/:threadId/post.md)

---

[API](https://skmtc.dev/langbase/apis/langbase-api.md) · [All operations](https://skmtc.dev/langbase/apis/langbase-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/langbase/langbase-api/revisions/a8ae3cd9597e/schema)