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
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Ensure required data tables exist using OpenAI and Google Gemini
Quick overview This workflow is called by another n8n workflow to ensure a specific n8n Data Table exists, checking existing tables first and creating the table with an OpenAI-powered agent and Data T ...
0
Built by Frantisek Frantisek
Aug 06, 2026
Answer electronics questions with Google Gemini, SerpAPI, and Supabase
Quick Overview This chat-based workflow uses Google Gemini and a Supabase vector store to answer electronic component questions from indexed PDF datasheets, and when information is missing it searches ...
0
Built by EximiaAI EximiaAI
Aug 06, 2026
Send a daily AI news digest from Hacker News with OpenRouter GPT-5 and Telegram
Quick overview This workflow runs daily to fetch the latest AI stories from Hacker News (Algolia API), scrape and convert each article to text, summarize them in Russian using OpenRouter (GPT-5 with G ...
0
Built by RenegaDe RenegaDe
Aug 06, 2026
Qualify inbound leads with GPT-4.1 mini, Telegram and Google Sheets
Quick Overview This workflow receives inbound leads via a webhook, optionally fetches and cleans the company website content, uses OpenAI (GPT-4.1 mini) to qualify and score the lead and generate outr ...
0
Aug 06, 2026
Track marketing revenue attribution with Google Sheets, Anthropic Claude, and Gmail
Quick overview This workflow captures leads via webhooks, logs UTM-based channel attribution to Google Sheets, attributes won-deal revenue back to the original channel, and sends a monthly executive s ...
0
Aug 05, 2026
Monitor live event sentiment and send alerts with Fanbase MCP, Gemini, and Slack
Quick overview This workflow monitors a time-boxed event by pulling live activity across your social media from Fanbase MCP every 15 minutes, analyzing each interval with Google Gemini, storing result ...
0
Built by sebastian sebastian
Aug 05, 2026
Roast and optimize landing page conversion copy with OpenAI
Quick overview This workflow automatically collects a landing page URL through a form, fetches the website content, analyzes it with an OpenAI-powered AI Agent, and returns personalized conversion rat ...
0
Built by Rahul Shah Rahul Shah
Aug 05, 2026
Classify emails and draft responses with Gmail, GPT-5-mini, and Sheets
Email Automation Workflow Template This n8n template demonstrates how to automate email classification, labeling, draft generation, and logging using Gmail, OpenAI, and Google Sheets. Use cases inc ...
1,856
Aug 05, 2026
Send a daily AI-rewritten RSS news digest with Google Gemini and Gmail
Quick overview This workflow runs daily on a schedule, reads world-news RSS feeds from BBC, ABC News, and The Guardian, rewrites the 10 most recent articles using Google Gemini, and sends the formatte ...
0
Built by zion zion
Aug 04, 2026
Analyze Facebook post comment sentiment with OpenAI, Google Sheets, and Gmail
Quick overview This workflow fetches comments from a Facebook Page post via the Facebook Graph API, classifies each comment’s sentiment with OpenAI, stores results in Google Sheets, and emails a sen ...
0
Built by Dr. Firas Dr. Firas
Aug 04, 2026
Generate Seedance video ads from Telegram photos with OpenAI and Blotato
Quick overview This workflow turns a product photo sent via Telegram into an AI-generated short video ad using OpenAI for image analysis and concept/caption writing, AtlasCloud Seedance 2.0 for text-t ...
0
Built by Dr. Firas Dr. Firas
Aug 04, 2026
Analyze competitor Facebook ads with Apify, OpenAI, and Google Sheets
Quick overview This workflow manually scrapes Facebook Ad Library results via apify, filters for high-like advertisers, analyzes video/image/text ads with OpenAI (vision + text), and appends a strateg ...
13
Built by Dr. Firas Dr. Firas
Aug 04, 2026
Send weekly KPI summary emails from Google Sheets using Gemini and Gmail
Quick Overview This workflow runs weekly to read metrics from Google Sheets, compute totals and averages, generate an executive summary with Google Gemini, and send a styled HTML report email via Gmai ...
0
Aug 04, 2026
Answer FAQ questions from Google Sheets with Gemini and log unanswered gaps
Quick Overview This workflow provides a public chat that answers customer questions strictly from an FAQ stored in Google Sheets using Google Gemini, and logs any questions not covered by the FAQ to a ...
0
Aug 04, 2026
Run a personalized 3-email onboarding drip with Google Gemini and Gmail
Quick Overview This workflow collects signups via an n8n form, logs them to Google Sheets, and uses Google Gemini to generate a 3-part personalized onboarding email drip sent through Gmail over five d ...
0
Aug 04, 2026
Send daily meeting prep briefs from Google Calendar with Gemini and Gmail
Quick Overview This workflow runs each morning, pulls today’s events from Google Calendar, uses Google Gemini to generate a short prep brief for each meeting, combines the briefs into a single daily ...
0
Aug 04, 2026
Publish multi-angle LinkedIn and Instagram carousels with Gemini and PostNitro
Quick overview This workflow polls the TechCrunch RSS feed for new articles, uses Google Gemini to generate three LinkedIn content angles, then uses PostNitro to create a carousel design and schedule ...
0
Built by Muneeb Awan Muneeb Awan
Aug 04, 2026
Create multi-angle LinkedIn and Instagram carousels from RSS with Gemini and PostNitro
Quick overview This workflow monitors the TechCrunch RSS feed, uses Google Gemini to generate three distinct LinkedIn content angles per article, then uses PostNitro AI to build a carousel design and ...
0
Built by Muneeb Awan Muneeb Awan
Aug 04, 2026
Suggest SEO internal links using Google Search Console, Claude, and Google Sheets
Quick overview This workflow pulls page-query data from Google Search Console, crawls URLs from your sitemap to map existing internal links and identify orphan pages, then uses Claude via OpenRouter t ...
0
Aug 04, 2026
Process invoices securely with OpenAI, Slack, and ERP webhooks
Quick overview This workflow accepts invoice documents via webhook, validates and de-duplicates them, extracts invoice data from PDFs with OpenAI, and either posts approved invoices to an ERP via HTTP ...
0
Aug 04, 2026