LangChain Custom Tool: Google Sheet Data Extraction

Sticky Note
Complex Trigger

This n8n workflow serves as a custom tool, designed to be invoked by a main LangChain agent. Its core function is to intelligently query and retrieve specific datasets from a Google Sheet. By focusing on extracting up to three distinct types of relevant data, this tool prevents the overwhelming of a Language Model with an entire, potentially large, spreadsheet. This targeted approach enables the calling agent to perform more complex and precise data-driven operations, optimizing token usage and ensuring that the LLM receives only the most pertinent information for its analysis or response, thereby enhancing overall efficiency and accuracy in agent-based applications.

20
Nodes
12
Services
3
Categories
Complex
Type

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File Details

Filename
0401_Code_Filter_Send_Triggered.json
Category
Code
Updated
09/04/2025

Services & Integrations

Sticky Note
@n8n/n8n-nodes-langchain.chat Trigger
@n8n/n8n-nodes-langchain.lm Chat Open Ai
@n8n/n8n-nodes-langchain.memory Buffer Window
Execute Workflow Trigger
@n8n/n8n-nodes-langchain.agent
@n8n/n8n-nodes-langchain.tool Workflow
Set
Google Sheets
Switch
Filter
Code

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How to Use This Workflow

1

Download the Workflow

Click the "Download Workflow" button above to get the JSON file.

2

Import to n8n

In your n8n instance, go to Workflows → Import and select the JSON file.

3

Configure Credentials

Set up your Sticky Note and other service credentials in n8n.

4

Activate & Test

Activate the workflow and test it to ensure everything works correctly.

Tags

#code
#sticky-note
#@n8n/n8n-nodes-langchain.chat-trigger
#@n8n/n8n-nodes-langchain.lm-chat-open-ai
#complex
#code
#development
#workflow-automation

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