MCP action

Questions
1

Describe the problem/error/question

Trying to publish a flow as an own MCP action in Langdock. It is published and MCP access is allowed. I can integrate the URL in Langdock and it connects successful but it looks like no action is available in that integration.

What is the error message (if any)?

No error message.

Information on your n8n setup

  • n8n version: 2.17.2 (self hosted)
  • Database (default: SQLite): default
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app): docker
  • Operating system: Debian 12
4

@nephilim make sure the MCP Server Trigger node is the start of your workflow, not a regular webhook or manual trigger — Langdock won’t discover actions unless the workflow actually starts with the MCP Server Trigger and has at least one tool node wired to it.

5

grafik
grafik1375Ă—476 28.1 KB
I am trying but I guess I haven’t understand the topic complete enough :frowning:

7

I struggle with point 2. The rest I got. What am I doing wrong related to the picture from my last post?

8

@nephilim your regular nodes (Check Attachment, If, Send Email etc) can’t connect directly to the MCP Server Trigger’s tools output — you need to wrap them inside a Custom n8n Workflow Tool node, that’s the piece you’re missing. Drop a Custom n8n Workflow Tool node between the MCP Server Trigger and your logic, it acts as the “action” that Langdock discovers