Browse 6,282 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.

6,282 workflows in Langchain
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Scrape Google Scholar research papers with Groq, SerpApi, CrossRef and Sheets
Quick overview This workflow takes a research topic from an n8n chat message, uses Groq to generate optimized Google Scholar queries, fetches paper results via SerpApi, enriches missing DOIs using the ...
0
Aug 12, 2026
Generate legal tech project proposals with Google Sheets, GPT-4o, SerpApi and Gmail
Quick Overview This workflow receives project requirements via a webhook, pulls service pricing from Google Sheets, uses OpenAI to analyze scope and estimate effort, optionally looks up missing servic ...
0
Aug 12, 2026
Generate agile project plan PDFs from proposals with Claude and SharePoint
Quick overview This workflow receives a project outline PDF via webhook, extracts its text, uses Anthropic Claude to generate a structured project plan, renders it into an HTML report, converts it to ...
0
Aug 12, 2026
Forecast stockouts and draft purchase orders with Gemini, Sheets, Slack and Gmail
Quick Overview This workflow runs every morning to read inventory from Google Sheets, calculate days of cover and reorder suggestions, and use Google Gemini to draft a purchase recommendation. It aler ...
0
Aug 11, 2026
Turn vague work requests into scoped briefs with adaptive Forms and Gemini
Quick Overview This workflow runs every morning, reads a renewals register from Google Sheets, calculates time-to-expiry and notice deadlines, uses Google Gemini to draft a short owner briefing, then ...
0
Aug 11, 2026
Update sales CRM and tasks from Gmail with Google Gemini and Google Sheets
Quick Overview This workflow monitors unread Gmail messages labeled “sales”, uses Google Gemini to extract structured deal updates and a suggested reply, writes the deal and next action to Google ...
0
Aug 11, 2026
Chase overdue invoice payments with Google Sheets, Gemini, Gmail and Slack
Quick Overview This workflow runs daily, reads unpaid invoices from Google Sheets, uses Google Gemini to draft stage-appropriate reminder emails, sends them via Gmail, optionally alerts a Slack financ ...
0
Aug 11, 2026
Send weekly Meta Ads performance PDF reports with Gemini and Gmail
Quick overview This workflow runs weekly to pull Meta Ads campaign and ad-level insights from the Meta Graph API, summarizes performance, generates charts with QuickChart, asks Google Gemini for writt ...
0
Built by SPCTEK AI SPCTEK AI
Aug 11, 2026
Edit Google Sheets by chat using GPT-4o-mini with approval and audit log
Quick overview Ask your spreadsheet questions in plain language — "best month?", "revenue by country?", "rows missing an email?" — and an AI agent reads the live sheet and answers with real number ...
0
Built by Ziad Karim Ziad Karim
Aug 11, 2026
Generate website security audit PDFs with ScrapingBee, Claude, Gotenberg and Outlook
Quick overview This workflow accepts a website URL via an n8n form, scrapes the page with ScrapingBee, and uses Anthropic Claude to audit HTTP security headers and client-side vulnerabilities. It then ...
0
Aug 11, 2026
Triage support emails and draft AI replies with Gmail, Google Sheets and OpenAI
Quick overview This workflow polls a Gmail support inbox, uses OpenAI to classify each email, logs non-spam requests to Google Sheets, drafts FAQ-grounded replies back into the original Gmail thread, ...
0
Built by Ziad Karim Ziad Karim
Aug 11, 2026
Engage with relevant Instagram posts using OpenAI and Postgres
Quick overview This scheduled workflow pulls Instagram influencers from Postgres, fetches each creator’s latest post via Unipile, evaluates caption and image relevance with OpenAI, and—when qualif ...
0
Aug 11, 2026
Reply to HubSpot form leads in seconds with Claude, Gmail and Slack
Quick overview This workflow listens for new HubSpot contacts created from form submissions, uses Anthropic Claude to draft a personalized first-response email, sends it via Gmail with your signature, ...
0
Built by Anas Ashfaq Anas Ashfaq
Aug 11, 2026
Qualify and score real estate leads via WhatsApp, Google Gemini, and PostgreSQL
Quick overview Capture real estate leads, qualify them through an AI-powered WhatsApp conversation, score buying intent, and notify your sales team when the lead is ready for follow-up. How it works ...
0
Aug 11, 2026
Create tailored resumes from job postings with OpenRouter, Notion, and Google Drive
Quick overview This workflow takes a job-posting URL or pasted job description, validates it with an OpenRouter model, generates an evidence-based tailored resume using Notion data, and saves the resu ...
0
Aug 11, 2026
Analyze YouTube comments and generate video ideas with Gemini and Telegram
Quick overview Youtube Video: https://youtu.be/YtHfQONV4A4 This workflow accepts a YouTube video URL via Telegram, pulls the video metadata and top 100 comments using the YouTube Data API, analyzes au ...
1
Built by iamvaar iamvaar
Aug 11, 2026
Collect packaging declarations from CSV with forms, AI agents and email
Quick overview This workflow emails packaging declaration (PPWR) requests from an uploaded supplier CSV, collects supplier submissions via an n8n Form with a PDF attachment, uses agent to extract key ...
0
Aug 11, 2026
Monitor Truth Social posts for Iran-Israel risk and alert Discord with Bright Data and OpenAI
Quick overview This workflow polls a Truth Social account every minute via Bright Data, tracks the newest processed post ID in an n8n Data Table, uses OpenAI (GPT-4o-mini) to classify posts about Iran ...
0
Aug 11, 2026
Design and apply Gmail label systems with OpenAI and human approval
Quick overview This workflow samples recent Gmail inbox emails, uses OpenAI to propose a tailored Gmail label system, and requires human approval before creating labels and classifying messages, then ...
0
Built by Mustapha Mustapha
Aug 11, 2026
Score inbound form leads with OpenAI and send hot leads to Slack and Sheets
Quick Overview This workflow collects n8n Form submissions, uses OpenAI (GPT-4o-mini) to score each lead from 1–10 with reasoning, posts hot leads (score ≥ 7) to Slack, and appends all scored lead ...
1
Aug 10, 2026