Browse 6,328 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.

6,328 workflows in Langchain
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Email-Based Book Recommendations with Ollama LLM and OpenLibrary API
This workflow listens for incoming book request emails, extracts the user's intent using the Ollama LLM, queries book data (title, summary, details) via an API, and sends a personalized recommendation ...
77
Jul 03, 2025
Website scam risk detector with GPT-4o and SerpAPI
Quick overview This intelligent workflow simplifies the complex task of determining whether a website is legitimate or potentially a scam. How it works The process begins with a simple form submissi ...
18,033
Built by AiAgent AiAgent
Jul 03, 2025
AI-Powered Lead Generation with Apollo, GPT-4, and Telegram to Database
AI-Powered Lead Generation with Apollo, GPT-4, and Telegram to Database Overview This intelligent lead generation workflow transforms voice commands or text input into verified prospect lists throug ...
3,488
Built by Paul Paul
Jul 02, 2025
Generate structured scientific research PDF summaries with GPT-4o
Quick overview Leverage the power of GPT-4o to seamlessly summarize a scientific research PDF of your choosing. How it works Utilizing the power of GPT-4o, the moment you save a PDF of a scientific r ...
13,211
Built by AiAgent AiAgent
Jul 02, 2025
Automated Stale User Re-Engagement System with Supabase, Google Sheets & Gmail
Built this workflow because most of our users signed up, then vanished after ~30 days. It runs daily, grabs those stale users from Supabase, updates a Google Sheet for tracking, and automatically send ...
82
Built by iamvaar iamvaar
Jul 02, 2025
Find the Best Favicon from Multiple Sources with GPT-4 Vision Analysis
Who's it for This workflow is perfect for directory site creators, content managers, and developers who need to automatically find and select the highest quality favicon or logo for websites they're ...
30
Jul 02, 2025
SEO Blog Publishing for Jekyll with GPT-4, GitHub & Social Sharing
🤖 Auto-Publish SEO Blog Posts for Jekyll with AI + GitHub + Social Sharing This workflow automates the entire process of publishing SEO-optimized blog posts (e.g., recipes) to a Jekyll site hosted ...
79
Jul 02, 2025
Iterative Content Refinement with GPT-4 Multi-Agent Feedback System
Who's it for This workflow is designed for users who want to implement iterative AI-powered content improvement processes. It's ideal for content creators, marketers, product managers, and anyone who ...
215
Jul 02, 2025
Generate Brand Marketing Shorts with GPT-4, FAL AI & ElevenLabs for Social Media
AI‑Powered Branded Marketing Videos & Shorts (SSO-Optimized for n8n) 🧠 About This Flow This advanced automation template allows marketing teams, content creators, and branding specialists to a ...
64
Jul 02, 2025
Categorize and Label Incoming Gmail Emails Automatically with GPT-4o mini
Sort New Gmail messages by category with AI 👥 Who's it for This workflow is perfect for individuals or teams who receive a high volume of emails 📥 and want to automatically organize them int ...
513
Built by Arlin Perez Arlin Perez
Jul 02, 2025
Automated Hazard Analysis for ISO 26262 Compliance Using GPT-4
Modular Hazard Analysis Workflow : Free Version Business Value Proposition Accelerates ISO 26262 compliance for automotive/industrial systems by automating safety analysis while maintaining rigorous ...
38
Built by MRJ MRJ
Jul 02, 2025
Process & Summarize PDFs from Email & Messaging Apps with OpenAI GPT
Process PDFs from Gmail, Outlook, Telegram and WhatsApp with OpenAI Transform PDF documents into actionable insights automatically across multiple platforms. This workflow monitors emails and messagi ...
78
Built by papcy papcy
Jul 02, 2025
Create a Multi-Modal Telegram Support Bot with GPT-4 and Supabase RAG
🧠 What It Does This n8n workflow turns your Telegram bot into a smart, multi-modal AI assistant that accepts text, documents, images, and audio messages, interprets them using OpenAI models, and re ...
10,022
Jul 02, 2025
Multi-Tool Research Agent for Animal Advocacy with OpenRouter, Serper & Open Paws DB
This general-purpose sub-agent combines multiple research and automation tools to support high-impact decision-making for animal advocacy workflows. It’s designed to act as a reusable, modular unit ...
41
Built by Open Paws Open Paws
Jul 02, 2025
Team Knowledge Management with Google Docs, Discord, and AI Assistant
Need help? Want access to this workflow + many more paid workflows + live Q&A sessions with a top verified n8n creator? Join the community Let’s activate your org’s memory: 📝 Set Storage Op ...
47
Built by David Ashby David Ashby
Jul 02, 2025
Automate ASMR Video Creation and Distribution with FalAI and Social Media Integration
🎬 Create Unlimited Viral ASMR Videos — Fully Automated! Tired of spending hours brainstorming viral content, writing prompts, and juggling video uploads? This powerful n8n workflow automates you ...
829
Built by Harrison P Harrison P
Jul 02, 2025
AI Personal Assistant with GPT-4o: Email, Calendar, Search & CRM Integration
This n8n template demonstrates how to use AI as a comprehensive personal assistant with multiple specialized agents. Use cases include email management, scheduling, web search, calculations, and more ...
920
Built by Jordan Lee Jordan Lee
Jul 01, 2025
Track AI Agent token usage and estimate costs in Google Sheets
This n8n template demonstrates how to obtain token usage from AI Agents and places the data into a spreadsheet that calculates the estimated cost of the execution. Obtaining the token usage from AI ...
1,818
Built by Solomon Solomon
Jul 01, 2025
Real-time PulsePoint Emergency Alerts to iMessage with AI Summaries
🚨 Emergency Alerts Reporter to iMessage This n8n template fetches real-time emergency incident alerts from PulsePoint for a specific agency and delivers them directly to any phone number via iMess ...
32
Jul 01, 2025
Auto Generate & Post LinkedIn Content for Amazon Sellers with GPT-4o & Apify
How it works This powerful automation turns LinkedIn influencer activity into high performing Amazon seller content, fully hands-off. It runs in two phases: AI Content Generator Retrieves influen ...
133
Jul 01, 2025