Bug Description

When deploying and activating a workflow using the REST API, no webhook paths are being registered, which causes this error when attempting to execute such workflows:

HTTP error executing workflow 'workflow name': status=404, response={"code":404,"message":"The requested webhook "POST 4c60e797-b8bf-4955-9daa-a1de775c4df6" is not registered.","hint":"The workflow must be active for a production URL to run successfully. You can activate the workflow using the toggle in the top-right of the editor. Note that unlike test URL calls, production URL calls aren't shown on the canvas (only in the executions list)"}

However, the workflow is both deployed and active. The only solution I've found is to make a change and save via the UI, which is not possible at scale.

I notice the frontend makes an internal call to /rest/webhooks/find with the path whenever it is saved - this seems to do the registering:

This behavior is not included in the API, and I am unable to mimic the request using my existing API key with any combination of headers. I am making a POST request to a webhook configured for POST method. From my perspective, this makes the API unusable headlessly.

To Reproduce

Deploy a workflow using API
Activate said workflow using API
Make request to production webhook URL

Expected behavior

Workflow executes

Debug Info

Debug info

core

• n8nVersion: 1.111.1
• platform: docker (cloud)
• nodeJsVersion: 22.19.0
• database: sqlite
• executionMode: regular
• concurrency: 20
• license: community
• consumerId: 00000000-0000-0000-0000-000000000000

storage

• success: all
• error: all
• progress: false
• manual: true
• binaryMode: filesystem

pruning

• enabled: true
• maxAge: 720 hours
• maxCount: 25000 executions

client

• userAgent: mozilla/5.0 (macintosh; intel mac os x 10_15_7) applewebkit/537.36 (khtml, like gecko) chrome/141.0.0.0 safari/537.36
• isTouchDevice: false

Generated at: 2025-11-06T18:22:42.956Z

Operating System

n8n cloud

n8n Version

1.111.1

Node.js Version

n8n cloud

Database

SQLite (default)

Execution mode

main (default)

Hosting

n8n cloud