AI-powered product research & comparison with GPT-4o and SerpAPI
Needs changesNeeds changes. This template uses 2 thing(s) that n8n 3.0 removes: SerpApi (Google Search), AI Agent v1 (old agent modes). 2 breaking item(s) found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 25 nodes and runs when a chat message arrives. Along the way it connects OpenAI Chat Model and SerpApi (Google Search).
How it runs
Trigger: When a chat message arrives.
- Item Finder (AI Agent): runs an AI agent, with model: OpenAI Chat Model; 1 tool (SerpAPI); memory: Window Buffer Memory; output parser: Structured Output Parser
- Reviewer (AI Agent): runs an AI agent, with model: OpenAI Chat Model; 1 tool (SerpAPI)
- Reviewer (AI Agent): runs an AI agent, with model: OpenAI Chat Model; 1 tool (SerpAPI)
- Reviewer (AI Agent): runs an AI agent, with model: OpenAI Chat Model; 1 tool (SerpAPI)
- Reviewer (AI Agent): runs an AI agent, with model: OpenAI Chat Model; 1 tool (SerpAPI)
- Reviewer (AI Agent): runs an AI agent, with model: OpenAI Chat Model; 1 tool (SerpAPI)
- Merge: merges the data from its input branches
- Aggregate: combines items into one
- Compiler (AI Agent): runs an AI agent, with model: OpenAI Chat Model
Services it uses
Before you upgrade to n8n 3.0
2 things in this workflow are removed in n8n 3.0. Fix them before you upgrade:
- SerpApi (Google Search) in SerpAPI1, SerpAPI, SerpAPI3…: no direct replacement: call the SerpApi REST API with an HTTP Request tool, or use a verified community node.
- AI Agent v1 (old agent modes) in Item Finder (v1.7), Reviewer 1 (v1.7), Reviewer 2 (v1.7)…: 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 |
|---|---|
| SerpApi (Google Search) SerpAPI1, SerpAPI, SerpAPI3, SerpAPI4, SerpAPI5, SerpAPI2 | No direct replacement: call the SerpApi REST API with an HTTP Request tool, or use a verified community node |
| AI Agent v1 (old agent modes) Item Finder (v1.7), Reviewer 1 (v1.7), Reviewer 2 (v1.7), Reviewer 3 (v1.7), Reviewer 4 (v1.7), Reviewer 5 (v1.7), Compiler (v1.7) | Latest AI Agent node (Tools Agent). For SQL Agent, use a Postgres or MySQL tool with a recent AI Agent. |
Nodes used (8)
- Chat Trigger
@n8n/n8n-nodes-langchain.chatTrigger - OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi - Simple Memory
@n8n/n8n-nodes-langchain.memoryBufferWindow - SerpApi (Google Search)
@n8n/n8n-nodes-langchain.toolSerpApi - Structured Output Parser
@n8n/n8n-nodes-langchain.outputParserStructured - Merge
n8n-nodes-base.merge - Aggregate
n8n-nodes-base.aggregate - AI Agent
@n8n/n8n-nodes-langchain.agent
From the author
Quick overview This powerful workflow can take hours of difficult research attempting to identify the perfect product to buy and condense it into a few short minutes. How it works 1. Begin by opening the chat trigger node and typing the name of an item you…