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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Automate lead gen & email outreach with Apify, Apollo.io, GPT-4 & Google Sheets
Disclaimer: Community nodes are used, and template can only be used on self-hosted n8n instances. This n8n template from Intuz provides a complete solution to automate your entire B2B lead generatio ...
859
Built by Intuz Intuz
Aug 21, 2025
Automate Gmail Lead Follow-Up with OpenAI GPT-4O, HubSpot, Slack & Google Sheets
How it works This workflow automates the handling of new lead responses received in Gmail. It captures emails with a specific label, analyzes the message using AI to determine sentiment, intent, urge ...
0
Aug 21, 2025
Email Drafting & News Research Assistant with OpenAI, Gmail, Tavily & Perplexity
AI Agent MCP for Email & News Research Build a chat-first MCP-powered research and outreach agent. This workflow lets you ask questions in an n8n chat, then the agent researches news (via Tavily + Pe ...
0
Aug 21, 2025
Import Research Papers from Telegram to Zotero with AI Abstract Summaries
Automatically Import Research Papers using DOI URL from Telegram to Zotero This workflow allows you to automatically import research papers into your Zotero library by simply sending a DOI link throu ...
0
Built by Budi SJ Budi SJ
Aug 21, 2025
Analyze Workflow Errors with OpenAI, FreshDesk Tickets & Slack Alerts
Automatically analyze n8n workflow errors with AI, create support tickets, and send detailed Slack notifications Perfect for development teams and businesses that need intelligent error handling with ...
0
Built by Anna Bui Anna Bui
Aug 21, 2025
Generate Daily Pipedrive Deal Summaries with GPT-4o-mini
This workflow fetches deals and their notes from Pipedrive, cleans up stage IDs into names, aggregates the information, and uses OpenAI to generate a daily summary of your funnel. ⚙️ Setup Instr ...
33
Aug 20, 2025
Blog Writer & Editor with Google Sheets Memory (GPT-4)
Chat to write or reword a blog post. The workflow stores each result in Google Sheets and uses a sub-workflow “Google tool” to count rows per session (your running context). If a session exceeds ...
78
Aug 20, 2025
Natural Language Q&A for Pipedrive Leads using GPT-4o-mini
📖 Description Ask natural-language questions about your Pipedrive leads. This workflow pulls live lead data from Pipedrive and has OpenAI answer questions like “leads added this week”, “stuc ...
0
Aug 20, 2025
Query Slack Channel History with Natural Language using OpenAI
Chat with a Slack channel using AI. This workflow fetches the channel’s message history and lets you ask natural-language questions (“what were the decisions?”, “who’s blocked?”, “summa ...
0
Aug 20, 2025
Write Personalised Direct Messages for Instagram with Apify, OpenAI, GSheets
This workflow contains community nodes that are only compatible with the self-hosted version of n8n. Fetch Instagram profile information with Apify and generate personalized DMs in Google Sheets. Thi ...
0
Aug 20, 2025
PDF Proposal Knowledge Base with S3, OpenAI GPT-4o & Qdrant RAG Agent
This template has a two part setup: Ingest PDF files from S3, extract text, chunk, embed with OpenAI embeddings, and index into a Qdrant collection with metadata. Provide a chat entry point that uses ...
0
Built by Joe Swink Joe Swink
Aug 20, 2025
AI Guest Post Generator with OpenAI & Google Sheets Automation
✨ About this Template This n8n template automates the process of writing SEO guest post content using OpenAI, based on rules and topics provided in a Google Sheet. The generated articles are saved ...
229
Aug 20, 2025
Build a WhatsApp Assistant with Memory, Google Suite & Multi-AI Research and Imaging
The "WhatsApp Productivity Assistant with Memory and AI Imaging" is a comprehensive n8n workflow that transforms your WhatsApp into a powerful, multi-talented AI assistant. It's designed to handle a w ...
0
Built by Iniyavan JC Iniyavan JC
Aug 20, 2025
Automated Document Compliance Validation with AI and Vector Database
Description This workflow automates compliance validation between a policy/procedure and a corresponding uploaded document. It leverages an AI agent to determine whether the content of the document ...
0
Aug 20, 2025
Manage Appian Tasks with Ollama Qwen LLM and Postgres Memory
This workflow is a simple example of using n8n as an AI chat interface into Appian. It connects a local LLM, persistent memory, and API tools to demonstrate how an agent can interact with Appian tasks ...
0
Built by Joe Swink Joe Swink
Aug 20, 2025
Facebook Comment AI Moderator with Notion & Gemini
🧩 Problem Solved Eliminates the slow, inconsistent, and error-prone process of manually replying to Facebook comments by automating it with AI, ensuring fast, accurate, and on-brand customer engage ...
0
Aug 20, 2025
Automate Client Onboarding with GPT-4o, GoHighLevel, Google Drive, Slack, and Gmail
Automate the complete client onboarding process using n8n, GoHighLevel, Slack, Google Drive, and Gmail. This workflow ensures a smooth, scalable onboarding journey for every new client. 📌 Purpose ...
0
Aug 20, 2025
Automate Client Onboarding with GPT-4o-mini, Asana, Slack, Google Drive and Gmail
Automate the complete client onboarding process for AI automation services using n8n, Asana, Slack, Google Drive, and Gmail. This workflow ensures a consistent, professional, and scalable onboarding e ...
0
Aug 20, 2025
Create a Witty Telegram Bot with AI-Powered Humor, Roasts & Stats using OpenRouter
GiggleGPTBot — Witty Telegram Bot with AI & Postgres 📝 Overview GiggleGPTBot is a witty Telegram bot built with n8n, OpenRouter, and Postgres. It delivers short jokes, motivational one-liners, ...
0
Aug 20, 2025
Calculate Embodied Carbon (CO2) for Revit/IFC Models using AI Classification
Estimate embodied carbon (CO2e) for grouped BIM/CAD elements. The workflow accepts an existing XLSX (grouped element data) or, if missing, can trigger a local RvtExporter.exe to generate one. It detec ...
2
Built by Artem Boiko Artem Boiko
Aug 20, 2025