Route user requests to specialized agents with GPT-4o Mini
Needs changesNeeds changes. This template uses 1 thing(s) that n8n 3.0 removes: AI Agent v1 (old agent modes). 1 breaking item(s) found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 16 nodes and runs when an HTTP POST request hits its webhook URL. Along the way it connects OpenRouter Chat Model and Postgres Chat Memory.
How it runs
Trigger: When an HTTP POST request hits its webhook URL.
- AI Agent: runs an AI agent, with model: GPT 4o Mini; memory: Postgres Chat Memory; output parser: Auto-fixing Output Parser
- Agent Route (Switch): routes items into 4 branches
- Reminder Agent (Execute Sub-workflow): calls another n8n workflow
- Email Agent (Execute Sub-workflow): calls another n8n workflow
- Meeting Agent (Execute Sub-workflow): calls another n8n workflow
- Document Agent (Execute Sub-workflow): calls another n8n workflow
- Reminder Agent Response (Respond to Webhook): sends the response back to the webhook caller
- Email Agent Response (Respond to Webhook): sends the response back to the webhook caller
- Meeting Agent Response (Respond to Webhook): sends the response back to the webhook caller
- Document Agent (Respond to Webhook): sends the response back to the webhook caller
Services it uses
Before you upgrade to n8n 3.0
1 thing in this workflow is removed in n8n 3.0. Fix it before you upgrade:
- AI Agent v1 (old agent modes) in AI Agent (v1.8): replace with Latest AI Agent node (Tools Agent). For SQL Agent, use a Postgres or MySQL tool with a recent AI Agent.
Rather not rewrite it? Many of these flows can be rebuilt in Make (free plan).
| Removed in 3.0 | Replace with |
|---|---|
| AI Agent v1 (old agent modes) AI Agent (v1.8) | Latest AI Agent node (Tools Agent). For SQL Agent, use a Postgres or MySQL tool with a recent AI Agent. |
Nodes used (9)
- Auto-fixing Output Parser
@n8n/n8n-nodes-langchain.outputParserAutofixing - Structured Output Parser
@n8n/n8n-nodes-langchain.outputParserStructured - Execute Sub-workflow
n8n-nodes-base.executeWorkflow - Switch
n8n-nodes-base.switch - OpenRouter Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenRouter - Webhook
n8n-nodes-base.webhook - Respond to Webhook
n8n-nodes-base.respondToWebhook - Postgres Chat Memory
@n8n/n8n-nodes-langchain.memoryPostgresChat - AI Agent
@n8n/n8n-nodes-langchain.agent
From the author
This n8n workflow template is designed to route user input to specialized agents (like a Reminder Agent, Email Agent, etc.) using a structured output from a language model. Here's a complete description of what it does and how each part works: --- 🔁 Workflow…