Browse 6,989 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.

6,989 workflows in Langchain
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Track menu food costs and flag margin erosion with GPT-6-luna, Google Sheets and Gmail
Food cost creep is quiet. A supplier puts up the price of chicken, nobody updates the recipe card, and the damage only shows up at month end. This n8n workflow keeps every recipe cost current, recompu ...
0
Oct 05, 2026
Approve pet boarding bookings and send vaccine reminders with Gmail, Sheets and OpenAI
Boarding bookings only get approved when the vaccination records actually hold up. This n8n workflow takes boarding requests from a form, checks rabies, DHPP and bordetella expiry dates against the st ...
0
Oct 05, 2026
Triage tender bid decisions with GPT-6-Luna and Google Sheets
Tenders arrive and somebody has to decide whether they are worth the paperwork. This workflow takes each incoming tender, has gpt-6-luna score the fit out of 100 and flag the risks, logs the decision ...
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Oct 05, 2026
Collect and escalate security patrol reports with gpt-6-luna, Google Sheets, and Gmail
Patrol reports that reach the right person before the shift ends. This workflow takes guard reports from an n8n Form, has gpt-6-luna grade the severity and write a summary a supervisor can read in ten ...
0
Oct 05, 2026
Audit AI citation gaps with ChatGPT, Perplexity, Google Sheets, and Slack
Quick overview This weekly workflow audits how often your brand is named versus cited by link in ChatGPT (with web search) and Perplexity, then identifies which external pages win those citations, cla ...
0
Oct 05, 2026
Register warranties and send GPT-4o-mini reminders with GoHighLevel and Sheets
Quick overview This workflow captures warranty registrations from an n8n Form or a webhook, saves each product to a Google Sheets warranty registry, and upserts the buyer into GoHighLevel with tags, n ...
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Built by Rahul Joshi Rahul Joshi
Oct 05, 2026
Triage construction project risk with Google Sheets, Open-Meteo, Gemini, and Gmail
Quick overview Youtube Video: https://youtu.be/Fh0QR48f9is This workflow runs every weekday morning, reads active construction projects and related data from Google Sheets, pulls a 7-day forecast fro ...
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Built by iamvaar iamvaar
Oct 05, 2026
Chase client documents with WhatsApp, Gmail, Google Sheets and GPT-4o-mini
Quick overview This workflow collects client document requests for a CA firm, creates a Google Drive folder and Google Sheets tracker entry, and sends upload links via WhatsApp Cloud API and Gmail, th ...
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Built by Rahul Joshi Rahul Joshi
Oct 05, 2026
Investigate fuel tank variances with Google Sheets, Gemini, and Slack
Quick overview Youtube Video: https://youtu.be/XHT46n4b1lg This workflow receives a shift-close webhook and reconciles fuel tank wet-stock in Google Sheets, optionally using Google Gemini to explain ...
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Built by iamvaar iamvaar
Oct 05, 2026
Triage irrigation incidents with Google Gemini, Open-Meteo, and Slack alerts
Quick overview This workflow ingests irrigation telemetry via a webhook, enriches it with hyperlocal weather from Open-Meteo, uses Google Gemini to classify incident severity and generate remediation ...
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Built by iamvaar iamvaar
Oct 05, 2026
Generate pool service visit reports with Google Sheets, Gemini, Gmail, Slack, and Telegram
Quick Overview This workflow collects pool service visit notes via an n8n Form, looks up customer and history in Google Sheets, uses Google Gemini to structure the notes into a report, logs visits and ...
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Built by iamvaar iamvaar
Oct 05, 2026
Triage watch repair requests with Google Gemini, HighLevel, Sightengine and Gmail
Quick overview Youtube Video: https://youtu.be/Qd5CW0-TwS4 This workflow collects watch repair requests via an n8n form, syncs the customer to GoHighLevel, checks the uploaded photo with Sightengine, ...
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Built by iamvaar iamvaar
Oct 05, 2026
Triage elevator complaints and manage tickets with Google Sheets and Gemini
Quick overview Youtube Video: https://youtu.be/CPAekWNslrc This workflow receives elevator complaints and technician service reports via webhooks, looks up and updates records in Google Sheets, uses ...
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Built by iamvaar iamvaar
Oct 05, 2026
Monitor Swiggy and Zomato reviews with GPT-4o-mini, Telegram, and Google Sheets
Quick Overview This workflow monitors Swiggy and Zomato reviews via an HTTP feed polled every 30 minutes or a webhook, uses OpenAI to analyze sentiment and draft replies, logs results to Google Sheets ...
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Built by Rahul Joshi Rahul Joshi
Oct 05, 2026
Answer finance questions from Xero via WhatsApp, Telegram, Slack, and OpenAI
Quick overview This workflow answers finance questions received on WhatsApp (via WAHA) or Telegram by fetching data from Xero, drafting a validated response with OpenAI, optionally posting the result ...
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Built by Intuz Intuz
Oct 05, 2026
Sell clothing on Facebook Messenger with Gemini, Stripe, and an admin app
Quick overview This workflow turns Facebook Messenger messages into a clothing sales flow powered by Google Gemini, with carts and orders stored in n8n Data Tables, payments handled via Stripe Checkou ...
0
Oct 05, 2026
Generate social content hooks with OpenAI GPT-4o-mini
Quick overview This workflow runs manually and uses OpenAI (GPT-4o-mini) to generate 10 scroll-stopping content hooks from a provided topic, audience, and tone, returning the results as JSON. How it ...
1
Oct 05, 2026
Write cited research reports from DuckDuckGo search results with OpenRouter
Quick overview Ask a question in a form; this workflow searches the web with DuckDuckGo and has an OpenRouter model write a report in which every claim cites a page it read, with every quote checked ...
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Built by Sam Sam
Oct 04, 2026
Turn conference contacts into Gmail follow-ups with Telegram, OpenAI and Google Sheets
Quick overview Handshake AI turns every conference handshake into a follow-up. Send a Telegram card photo, voice note or text; OpenAI (and Groq for voice) extracts and researches the contact, saves it ...
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Oct 04, 2026
Triage Upwork job alert emails with Gmail, OpenAI, and Telegram
Quick overview This workflow watches your Gmail inbox for Upwork job-alert emails, uses OpenAI to extract and score each job against your freelancer profile, then sends high-scoring opportunities as f ...
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Built by Umarjon Umarjon
Oct 04, 2026