---
title: "Webhook Run Flow"
method: POST
path: "/api/v1/webhook/{flow_id_or_name}"
tags: ["Base"]
---

# Webhook Run Flow

`POST /api/v1/webhook/{flow_id_or_name}`

Run a flow using a webhook request.

Args:
    auth: Resolved webhook user and flow, scoped to the authenticated caller.
    request: The incoming HTTP request.

Returns:
    A dictionary containing the status of the task.

Raises:
    HTTPException: If the flow is not found or if there is an error processing the request.

## Path parameters

- `flow_id_or_name` string, required

## Response `202`

Successful Response

- object

## Other responses

- `422` — Validation Error

## Changes

- **2026-06-08** `a5c4fa6a88f7` — 1 warning
  - deleted the `query` request parameter `user_id`
- **2026-03-12** `830c31118215` — 2 info
  - added the optional property `detail/items/ctx` to the response with the `422` status
  - added the optional property `detail/items/input` to the response with the `422` status
- **2025-10-16** `9bd3e81318d7` — 2 warning, 1 info
  - removed the optional property `detail/items/ctx` from the response with the `422` status
  - removed the optional property `detail/items/input` from the response with the `422` status
  - added the new optional `query` request parameter `user_id`

[Change history](https://skmtc.dev/langflow-ai/apis/langflow/changes/api/v1/webhook/:flow_id_or_name/post.md)

---

[API](https://skmtc.dev/langflow-ai/apis/langflow.md) · [All operations](https://skmtc.dev/langflow-ai/apis/langflow/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/langflow-ai/langflow/revisions/22962dc5e81b/schema)