Ask a human for help when the AI doesn't know the answer

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Built by Deborah Deborah
Created on June 05, 2026

Description

This is a workflow that tries to answer user queries using the standard GPT-4 model. If it can't answer, it sends a message to Slack to ask for human help. It prompts the user to supply an email address.

This workflow is used in Advanced AI examples | Ask a human in the documentation.

To use this workflow:

Load it into your n8n instance.
Add your credentials as prompted by the notes.
Configure the Slack node to use your Slack details, or swap out Slack for a different service.

Nodes Used (6)

AI Agent
@n8n/n8n-nodes-langchain.agent
Call n8n Workflow Tool
@n8n/n8n-nodes-langchain.toolWorkflow
Code
n8n-nodes-base.code
OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi
Simple Memory
@n8n/n8n-nodes-langchain.memoryBufferWindow
Slack
n8n-nodes-base.slack