Browse 7,043 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.

7,043 workflows in Langchain
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Create AI videos from Google Sheets with Veo3, Drive, OpenAI and YouTube
Quick overview This workflow reads video prompts from Google Sheets, generates an AI video using Google Veo3 via fal.run, saves the file to Google Drive, creates an SEO-friendly title with OpenAI, upl ...
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Built by WIKIIII WIKIIII
Sep 29, 2026
Generate vertical product video ads with OpenAI, Groq, Google Drive and JSON2Video
Quick overview Our workflow takes product data, generates AI images and voiceover, stores assets in Google Drive, then combines everything into a 9:16 video with automatic captions using JSON2Video. ...
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Built by Abu Bakar Abu Bakar
Sep 29, 2026
Answer and track Stripe disputes with OpenAI and Slack
Quick overview This workflow monitors Stripe dispute events and runs a daily deadline check, then uses OpenAI to draft a facts-only rebuttal letter, updates dispute evidence in Stripe (draft or submit ...
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Sep 29, 2026
Classify Gmail finance emails with OpenAI and log results to Google Sheets
Quick overview This workflow runs hourly to read unread Gmail messages, uses OpenAI to classify them, and then files expenses, sales orders, and settlements to Google Sheets with supporting PDFs store ...
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Sep 29, 2026
Answer customer support emails in Gmail with Google Docs and Google Gemini
Quick overview Answers customer emails in Gmail using only a knowledge base you keep in Google Docs. When the answer isn't there, it asks you, turns your answer into a reply, and sends you a ready-to- ...
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Sep 29, 2026
Track parcel returns and refunds with Google Drive, Gmail, and Kontoflux
Quick overview This workflow tracks return shipments and refunds by extracting data from scanned return receipts in Google Drive, enriching it via Gmail and Kontoflux, storing everything in an n8n Dat ...
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Built by Florian Florian
Sep 29, 2026
Track competitor pricing and news changes in Google Sheets with Gemini, Gmail and Slack
Quick overview Monitor competitor websites and news automatically every week. Built for founders, marketers and sales teams, this workflow detects pricing, product and messaging changes, uses Google G ...
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Sep 29, 2026
Qualify WordPress Contact Form 7 leads with Gemini, HubSpot, and Slack
Quick overview Gemini reads every Contact Form 7 submission and sorts it into lead, support or spam. Leads are scored from 1 to 5 and saved to HubSpot with a note, support requests go to their own Sla ...
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Sep 29, 2026
File and classify Gmail invoices, orders, and payouts with OpenAI and Google Sheets
Quick overview This workflow runs hourly to process unread Gmail messages, uses OpenAI to classify them (sales, expense, settlement, transaction, notification, other), extracts key fields for expenses ...
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Sep 29, 2026
Run a WhatsApp support agent with memory using OpenAI, Google Sheets and Gmail
Quick Overview This workflow receives WhatsApp webhooks from Meta, stores conversation history in Google Sheets per phone number, generates short context-aware replies with OpenAI, and supports a “s ...
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Sep 29, 2026
Generate social posts and images with Claude, Gemini, and OpenAI
Quick overview This workflow receives a webhook request with a topic and context, generates platform-specific copy for LinkedIn, X, Facebook, and Instagram using Anthropic Claude, Google Gemini, or Op ...
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Built by Javed Iqbal Javed Iqbal
Sep 29, 2026
Index WooCommerce products in Pinecone with OpenAI embeddings
Quick overview This workflow runs on a manual or daily schedule to sync WooCommerce products into Pinecone by fetching changed items, enriching them with variations and reviews, generating OpenAI embe ...
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Sep 29, 2026
Reconcile Razorpay UPI payments with Google Sheets, GPT-4o, Gmail and Slack
Quick overview This workflow runs daily to reconcile Razorpay payments and settlements against invoice and bank-credit records in Google Sheets, logs exceptions, sends receipt emails via Gmail, create ...
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Built by Rahul Joshi Rahul Joshi
Sep 29, 2026
Deliver entropy-based yes/no oracle answers via Telegram with OpenAI and Sheets
Quick overview This workflow listens for Telegram messages (text or voice), transcribes voice notes with OpenAI, computes an entropy-based yes/no verdict via sub-workflows, then replies with an OpenAI ...
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Sep 29, 2026
Score B2B account hiring signals with OpenAI, JobsPipe MCP, Sheets and Slack
Quick overview This workflow opens an n8n chat where an OpenAI-powered agent uses the JobsPipe MCP server to answer questions about who is hiring, returning job-posting-backed results with source link ...
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Sep 29, 2026
Route cold-chain lot release decisions with OpenAI, Gmail and Telegram
Quick overview Receives cold-chain excursion telemetry via webhook, enriches it via an external stability API, and uses OpenAI to extract facts and draft disposition rationales. It routes lots for rel ...
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Sep 29, 2026
Triage blood donor deferrals and component release with Gmail, OpenAI, and Telegram
Quick overview This workflow monitors a Gmail label for donor screening questionnaire emails, extracts AABB-style risk flags with OpenAI, calculates the effective donor deferral and component release ...
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Sep 29, 2026
Schedule golf course irrigation with Open-Meteo, GPT-4o-mini, and Telegram
Quick overview This workflow receives a daily batch of golf course zone sensor readings, pulls a forecast from Open-Meteo, calculates per-zone irrigation runtimes, checks pesticide-label REI and water ...
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Sep 29, 2026
Approve employee expense receipts with Gmail, Google Sheets, and OpenAI
Quick Overview This workflow processes expense receipts emailed to Gmail, extracts receipt data with OpenAI, checks it against rules and historical data stored in Google Sheets, and routes claims for ...
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Built by Luca Luca
Sep 28, 2026
Manage WhatsApp and Telegram business ops with OpenAI, Postgres and Sheets
Quick overview This workflow connects WhatsApp and Telegram to six specialist OpenAI agents for sales, supplier management, inventory, invoices, appointments and customer support. It retrieves busines ...
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Sep 28, 2026