Browse 7,110 n8n workflow templates in the Langchain category. These ready-to-use automations connect apps and services with n8n — no coding required. Click any workflow to explore its nodes and import it directly into n8n.

7,110 workflows in Langchain
Nodes: Sort: Date:
Extract and Organize Colombian Invoices with Gmail, GPT-4o & Google Workspace
🧾 Personal Invoice Processor This N8N workflow automates the extraction and organization of personal invoices in Colombia received via Gmail. It includes the following key steps: πŸ” Flow Summar ...
2,536
May 09, 2025
Automated Facebook Comment Management with GPT-4o and LangChain
πŸ€– Facebook AI Agent with MCP Server – Built for Smart Engagement and Automation Hi! I’m Amanda πŸ₯°πŸ˜˜ β€” I build intelligent automations with n8n and Make. This powerful workflow was desi ...
1,081
May 08, 2025
AI Personal Assistant with GPT-4o, RAG & Voice for WhatsApp using Supabase
🧠 Intelligent AI Assistant with RAG & Voice for WhatsApp – Built with GPT-4o & Supabase πŸ“Œ About this workflow and its creator Hi! I’m Amanda, a creator of intelligent automations using n8n ...
3,100
May 08, 2025
Control your discord server with natural language via GPT4o and MCP Client
What it is- Very simple connection to your Discord MCP Server and 4o. How to set it up- Just specify your MCP Server's url, select your OpenAI credential, and you're set! How to use it- You can no ...
771
Built by David Ashby David Ashby
May 08, 2025
AI-Powered Restaurant Order Chatbot with GPT-4o for POS Integration
This workflow automates the restaurant POS (Point of Sale) data management process, facilitating seamless order handling, customer tracking, inventory management, and sales reporting. It retrieves ord ...
11,094
May 08, 2025
Document Q&A Chatbot with Gemini AI and Supabase Vector Search for Telegram
This template creates a Telegram AI Assistant that answers questions based on your documents, powered by Google Gemini and Supabase. Key features include Intelligent HTML Post-processing for rich form ...
16,500
May 08, 2025
YouTube Comment Sentiment Analysis with Google Gemini AI and Google Sheets
This workflow automatically collects all comments from a specified YouTube video and analyzes the sentiment of each comment using an AI model (e.g., GPT, Claude or Gemini). The sentiment (Positive, Ne ...
526
May 08, 2025
AI Marketing Agent for Lead Generation: Reddit + OpenRouter + Gmail
What it is This n8n workflow monitors Reddit for posts relevant to a specific business or industry, identifies potential leads, and delivers them directly to your inbox. Full tutorial (https://findle ...
2,137
Built by Ari Nakos Ari Nakos
May 08, 2025
Generate Lessons Learned Reports from Jira Epics with AI and Google Docs
Who is this for? Jira users who want to automate the generation of a Lessons Learned or Retrospective report after an Epic is Done. What problem is this workflow solving? / use case Lessons Learned / ...
3,406
May 08, 2025
Track Personal Finances with GPT-4 via Telegram & Google Sheets
Track your expenses, gain insights, and manage money smarter – right from Telegram. Who is this For This workflow is perfect for individuals and freelancers who want financial control without app ov ...
1,309
May 08, 2025
Voice-to-Email Response System with Telegram, OpenAI Whisper & Gmail
This workflow gives you the ability to reply to a long email with a voice note, rather than having to type everything out. ChatGPT will format your audio response and create an email draft for you. ...
2,927
Built by Adam Janes Adam Janes
May 08, 2025
Wix Chat Auto-Responder with OpenAI GPT and Email Fallback
Wix Chat Auto-Responder with OpenAI GPT and Email Fallback This template connects Wix Chat with OpenAI via n8n to automate intelligent customer responses on your website only when no human has respon ...
287
May 07, 2025
Collect LinkedIn Profiles with AI Processing using SerpAPI, OpenAI, and NocoDB
What problem does this solve? It fetches LinkedIn profiles for a multitude of purposes based on a keyword and location via Google search and stores them in an Excel file for download and in a NocoDB ...
1,105
Built by Askan Askan
May 07, 2025
Automate Lead Qualification with RetellAI Phone Agent, OpenAI GPT & Google Sheet
πŸ‘‰ Build a Phone Agent to qualify outbound leads and schedule inbound calls Who is this for? This workflow is designed for sales teams, call centers, and businesses handling both outbound and inb ...
14,246
Built by Dr. Firas Dr. Firas
May 06, 2025
Automate Agile Refinement Prep with Gmail, OpenAI & Google Sheets
πŸ‘€ Who is this for? This workflow is designed for Scrum Masters, Agile Coaches, and Product Owners who want to automate backlog refinement preparation using Google Sheets, Gmail, and OpenAI. It’ ...
280
Built by Willemijn Willemijn
May 06, 2025
Comprehensive SEO Keyword Research with OpenAI & DataForSEO Analytics to NocoDB
AI-Powered SEO Keyword Research Workflow with n8n > automates comprehensive keyword research for content creation Table of Contents Introduction Workflow Architecture NocoDB Integration Data Flo ...
4,313
Built by phil phil
May 06, 2025
Generate Riddle Shorts & Post on YouTube with Sonnet 3.5, Pinecone & Creatomate
This workflow allows you to generate riddle-themed vertical videos (9:16), render them using Creatomate, and upload them directly to YouTube β€” all automatically. It's optimized for low-cost operatio ...
474
Built by Joseph Joseph
May 06, 2025
Automate YouTube Uploads with AI-Generated Metadata from Google Drive
πŸ‘₯ Who Is This For? Content creators, marketing teams, and channel managers who want a simple, hands‑off solution to upload videos and automatically generate optimized metadata from video transc ...
6,190
Built by JPres JPres
May 06, 2025
Build a Personal Assistant with Google Gemini, Gmail and Calendar using MCP
Talk to Your Apps: Building a Personal Assistant MCP Server with Google Gemini Wouldn't it be cool to just tell your computer or phone to "schedule a meeting with Sarah next Tuesday at 3 PM" or "find ...
20,512
May 06, 2025
Search LinkedIn companies, Score with AI and add them to Google Sheet CRM
Search LinkedIn companies, Score with AI and add them to Google Sheet CRM Setup Video: https://youtube.com/watch?v=m904RNxtF0w&t Who is this for? This template is ideal for sales teams, business dev ...
25,022
Built by Matthieu Matthieu
May 06, 2025