Get node types unauthorized

[CptDayDreamer]

Describe the problem/error/question

I need to have access to /types/nodes.json to check for built-in nodes that are not the latest. This flow template uses it and it used to work: Check if workflows contain build-in nodes that are not of the latest version | n8n workflow template

I use the predefined n8n credentials type. But I also tried it with Authorization: Bearer , and also X-N8N-API-KEY , but will always receive 401 Unauthorized.

It works when I call the URL in my browser, but not with an HTTP request node. It used to work and also proposed here again:

Request for Node Details and API Documentation in n8n

Hi n8n Support Team, I hope you’re doing well. We are currently working on creating workflows in n8n via REST APIs. As part of this, we need to dynamically retrieve the available node list and detailed information for each node — such as the required parameters, credential key names, and other configuration details. Our goal is to collect these inputs from users dynamically, but we are having trouble finding any official documentation or endpoint that provides these node-specific details. Co…

What is the error message (if any)?

401 Unauthorized

Please share your workflow

Share the output returned by the last node

Authorization failed - please check your credentials
Unauthorized

Information on your n8n setup

• n8n version: 1.117.3
• Database (default: SQLite): SQLITE
• n8n EXECUTIONS_PROCESS setting (default: own, main):
• Running n8n via (Docker, npm, n8n cloud, desktop app): Docker
• Operating system: Linux Unraid

[barn4k]

hello @CptDayDreamer

There is no such an API endpoint. You can’t access that URL.

On a self-hosted instance you can do the similar with these nodes: