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Find and compare online tools with GPT-4o and SerpAPI research

AiAgentAiAgent
565 views
2/3/2026
n8n
Official Page

AIPowered Online Tool Finder Utilizing GPT4o.png

What It Does

This powerful workflow can take hours of difficult research attempting to identify the perfect online tool to aid you with your business and condenses it into a few short seconds. Simply typing the name of an online tool you would like to identify into a chat message will initiate the workflow to begin its search process to identify 5 companies that will provide you with the online tool you desire. The initial chat will prompt the Tool Finder AI agent utilizing the power of GPT-4o in combination with SerpAPI to conduct a search and find 5 top end companies that contain the online tool you desire. It will then send the name of each company to five separate Reviewer Tool Agents that will gather information on each company. Each Reviewer Tools Agent will again harness the power of GPT-4o and SerpAPI to give a detailed descriptions of the online tool available including its price, limitations, summary of reviews, pros and cons, as well as an overall conclusion of the online tool.

Who This Is For

This is the perfect workflow for anyone who is interested in obtaining an online tool to help automate business or everyday tasks. Rather than spending an excess amount of time searching through websites and review pages to determine the best product available this workflow completes the process for you. It provides five options in a condensed form that easily lets you compare and evaluate the options in a single place. Whether you are searching for an automatic email responder or the best available online spreadsheet, this workflow is exactly what you need to help bring your business to the next level.

How It Works

Begin by opening the chat trigger node and typing the name of an online tool you would like to use to improve your day to day tasks. Example: Automatic email responder, automatic instagram poster, or online spreadsheet. This will trigger the Tool Finder Tools Agent to begin to utilize GPT-4o to begin to create search queries based off the tool you wish to identify. It will then use these search queries with SerpAPI to identify 5 companies that provide the online tool you desire. After it has obtained the names of five companies it will then in a structured output, send each item to a separate Reviewer Tools Agent. Once the Reviewer Tools Agent has received the name of the item it will then begin an in-depth review of that item. Each Reviewer Tools Agent will again use the power of GPT-4o connected with SerpAPI to obtain the most up to date information on each item from the internet. For each company and its tool you will be provided with:

  • Price: If it is a one time purchase, monthly subscription and if there is a free version.
  • Limits: It will provide any limitations on completing the desired tasks. If there is a limit on number of tasks that can be completed. If it only works with certain software.
  • Summary of reviews: It will provide an overall summary of the reviews, how many reviews, as well as the star rating of each item. It will go in depth on the summary of the reviews. It will provide 3-4 pros and 2-3 cons of each item.
  • Conclusion: It will provide an overall summary of the tool.

After each of the Reviewer Tools Agent is complete with its review of the company and the online tool they provide, they will all send the information along to a Compiler Tools Agent. This tools agent uses GPT-4o-mini to arrange the data and present it in a concise, organized fashion. This allows for easy readability.

Set Up Steps

  1. You will need to obtain an Open AI API key from platform.openai.com/api-keys
  2. After you obtain this Open AI API key you will need to connect it to the Open AI Chat Model for all of the Tools agents (Item finder, Reviewer 1, Reviewer 2, Reviewer 3, Reviewer 4, Reviewer 5, and Compiler).
  3. You will now need to fund your Open AI account. GPT 4o costs ~$0.03-$0.04 to run the workflow.
  4. Next you will need to create a SerpAPI account at https://serpapi.com/users/sign_up
  5. After you create an account you will need to obtain a SerpAPI key.
  6. You will then need to use this key to connect to the SerpAPI tool for each of the tools agents (Tool finder, Reviewer 1, Reviewer 2, Reviewer 3, Reviewer 4, and Reviewer 5)
  7. Tip: SerpAPI will allow you to run 100 free searches each month. This workflow uses ~15-30 SerpAPI searches per run. If you would like to utilize the workflow more than that each month, create multiple SerpAPI accounts and have an API key for each account. When you utilize all 100 free searches for an account, switch to the API key for another account within the workflow.

Find and Compare Online Tools with GPT-4o and SerpAPI Research

This n8n workflow leverages the power of AI agents (GPT-4o) and web search (SerpAPI) to research and compare online tools based on a user's request. It's designed to automate the process of gathering information and presenting it in a structured, actionable format.

What it does

This workflow simplifies the process of researching and comparing online tools by:

  1. Receiving a Chat Message: It starts by listening for an incoming chat message, which serves as the user's request for tool comparison.
  2. Initializing AI Agent: An AI Agent (configured with an OpenAI Chat Model and Simple Memory) is activated to process the user's request.
  3. Performing Web Search: The AI Agent utilizes the SerpAPI tool to perform Google searches based on the user's query, gathering relevant information about online tools.
  4. Structuring Output: A Structured Output Parser is used to format the AI Agent's response into a predefined JSON structure, ensuring consistency and ease of use.
  5. Aggregating Results: The search results and AI-generated comparisons are then aggregated.
  6. Merging Data: Finally, the processed data is merged, likely for a final output or further processing (though the exact destination isn't specified in the provided JSON).

Prerequisites/Requirements

To use this workflow, you will need:

  • n8n Instance: A running instance of n8n.
  • OpenAI API Key: For the "OpenAI Chat Model" node to function. This provides the GPT-4o capabilities.
  • SerpAPI API Key: For the "SerpAPI (Google Search)" node to perform web searches.

Setup/Usage

  1. Import the Workflow: Import the provided JSON into your n8n instance.
  2. Configure Credentials:
    • Set up your OpenAI API Key credential for the "OpenAI Chat Model" node.
    • Set up your SerpAPI API Key credential for the "SerpAPI (Google Search)" node.
  3. Activate the Workflow: Once the credentials are configured, activate the workflow.
  4. Send a Chat Message: Send a chat message to the configured "Chat Trigger" with your request for online tool comparison (e.g., "Compare project management tools for small teams," or "Find alternatives to Zoom for video conferencing").
  5. Review Output: The workflow will process your request and, based on the Merge and Aggregate nodes, will prepare the structured comparison data. You would typically connect these to a final output node (like a Slack message, Google Sheet, or HTTP response) to see the results.

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