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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Recommend supplier consolidation with Google Sheets, Groq, Slack and Gmail
Quick overview This workflow runs weekly to read supplier spend data from Google Sheets, detect overlapping suppliers across departments, estimate potential consolidation savings, and use Groq-hosted ...
0
Jul 14, 2026
Score and triage inbound leads with Groq, Slack, Google Sheets, and Google Tasks
Quick Overview This workflow captures leads via an n8n form, stores them in an n8n Data Table, uses a Groq Llama 3.3 chat model to score and categorize each lead and draft a reply, optionally alerts i ...
1
Jul 14, 2026
Extract and validate invoice data from Google Drive using OCR.Space, Gemini, and Google Sheets
Quick overview This workflow monitors a Google Drive folder for newly uploaded invoice files, extracts text with OCR.Space, uses Google Gemini to convert the OCR text into structured invoice fields, v ...
1
Jul 14, 2026
Route supplier risk alerts from Gmail to Slack with Gemini and Google Sheets
Quick overview This workflow monitors incoming Gmail messages from suppliers, uses Google Gemini to analyze sentiment and relationship risk, generates an engagement strategy for risky emails, sends an ...
0
Jul 14, 2026
Route insurance quote leads with OpenAI, Airtable, Sheets, Teams, Slack and Twilio
Quick overview This workflow receives insurance quote submissions via a webhook, normalizes and deduplicates them against Airtable and/or Google Sheets, uses OpenAI to score and classify the lead, the ...
2
Jul 14, 2026
Schedule weekly focus-time blocks with Google Calendar, OpenAI, and Slack
Quick overview This workflow runs every Sunday at 18:00 to scan your Google Calendar for next week, find free gaps of at least two hours within your working hours, auto-book them as “🧘 Focus Time ...
2
Built by kenta kenta
Jul 14, 2026
Extract Twilio voice donation details with Groq, Gemini, and Google Sheets
Quick overview This workflow receives Twilio call recording callbacks, transcribes the audio with Groq Whisper, uses Google Gemini/Groq LLMs to extract structured donation details, and appends the res ...
21
Jul 13, 2026
Run a voice-enabled AI assistant on Telegram with OpenAI, Gmail and Notion
Quick overview This workflow turns a Telegram bot into a personal assistant that handles text and voice messages using OpenAI, can read Gmail and Google Calendar, looks up tasks and contacts in Notion ...
1
Built by Dr. Firas Dr. Firas
Jul 13, 2026
Generate daily auto-service AI videos and post them with OpenAI, Perplexity, AtlasCloud, and Blotato
Quick overview This workflow runs daily (or manually) to research an auto-service topic with Perplexity, generate a caption and text-to-video prompt with OpenAI, render an AI video via AtlasCloud, the ...
1
Built by Dr. Firas Dr. Firas
Jul 13, 2026
Create AI product video ad Shorts from Telegram photos with OpenAI and AtlasCloud
Quick overview This workflow takes a product photo sent via Telegram, uses OpenAI Vision to describe it and OpenAI to write a short-form video ad prompt, generates a vertical video via AtlasCloud, the ...
2
Built by Dr. Firas Dr. Firas
Jul 13, 2026
Publish AI social posts from Telegram to LinkedIn, Instagram, Facebook and Threads with OpenAI and Blotato
Quick overview This workflow listens for a Telegram message or voice note, uses OpenAI to turn it into a cross-platform social caption and matching AI image, publishes the post via Blotato to LinkedIn ...
2
Built by Dr. Firas Dr. Firas
Jul 13, 2026
Send weekly blended ad performance reports with Meta, Google Ads, GA4 and OpenAI
Quick overview This workflow runs every Monday at 8am to pull the last 7 days of performance from Meta Ads, Google Ads, and GA4, calculate blended KPIs, generate an OpenAI-powered narrative summary, e ...
0
Jul 13, 2026
Manage Google and Trustpilot reviews with OpenAI and Slack
Quick overview This workflow runs hourly to fetch new Google Business Profile and Trustpilot reviews, deduplicates them, uses OpenAI via a LangChain agent to draft sentiment-aware replies, escalates n ...
0
Jul 13, 2026
Handle WhatsApp support chats with OpenRouter, Pinecone, and Gemini
Quick overview This template implements a WhatsApp support suite that logs inbound events to a dashboard API, routes conversations through an OpenRouter-powered AI agent with Pinecone RAG and memory, ...
2
Jul 13, 2026
Confirm and log WhatsApp restaurant orders with Groq and Google Sheets
Quick Overview This workflow triggers on incoming WhatsApp orders, uses Groq to extract items and quantities, validates them against a live Google Sheets menu, logs the result to an orders sheet, and ...
0
Jul 13, 2026
Predict Salesforce deal escalation risk with Gemini and Slack alerts
Quick overview This workflow pulls open Salesforce opportunities and their last-30-days activities, uses Google Gemini to predict escalation risk per deal, then flags high-risk opportunities in Salesf ...
0
Jul 13, 2026
Detect revenue leakage with Salesforce, Google Sheets, Gemini, and Slack
Quick overview This workflow manually audits Closed Won Salesforce opportunities against billed amounts in Google Sheets, uses Google Gemini to analyze any revenue gap, then alerts a Slack user and wr ...
0
Jul 13, 2026
Monitor ride surge events and analyze ride errors with Sheets, Slack and Gemini
Quick overview This workflow pulls ride events and error records from Google Sheets, detects surge pricing and long waits, and notifies via Slack. For error records, it uses Google Gemini with real-ti ...
0
Jul 13, 2026
Generate executive decision briefings from APIs with OpenAI and Google Sheets
Quick overview This workflow runs daily or via an on-demand webhook to pull financial metrics, operational KPIs, and market quotes via HTTP APIs, then uses OpenAI to detect anomalies and generate an e ...
0
Jul 13, 2026
Guard Hostinger VPS CPU spikes with Anthropic, SSH, and email approvals
Quick overview This workflow monitors a Hostinger VPS every 15 minutes for CPU spikes, correlates them with traffic anomalies, and either auto-activates a lockdown firewall or emails a process report ...
0
Built by Hostinger Hostinger
Jul 13, 2026