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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Draft and review Google review reply emails with Gmail, OpenAI, and Google Sheets
Quick overview Watches Gmail for Google review alerts, drafts a reply with AI, checks that draft against the email it came from, and sends it to you. Low ratings arrive with a warning to call first. N ...
43
Built by 43 Sunsets 43 Sunsets
Jul 07, 2026
Vet community membership applications with Google Gemini, Telegram, and Sheets
Quick overview This workflow collects community membership applications via an n8n Form, vets each candidate with Google Gemini using Tavily web search and an Apify LinkedIn lookup, requests human app ...
0
Jul 07, 2026
Run Bunker Guard NPC chat and RAG lore checks with Google Gemini and Google Drive
Quick overview This workflow powers dynamic character interactions for investigative games. It ingests lore from Google Drive into a vector database, using Google Gemini agents to generate daily brief ...
1
Jul 06, 2026
Generate sound effects from chat with Groq, ElevenLabs and Google Drive
Quick Overview This workflow turns an n8n Chat message into a generated sound effect using Groq (Llama 3.3) to refine the prompt, calls the ElevenLabs sound-generation API to create an MP3, uploads th ...
0
Built by Kevin Yu Kevin Yu
Jul 06, 2026
Assist hospital doctors via Telegram with OpenAI, Google Sheets, Gmail and Slack
Quick overview This workflow combines a Telegram doctor bot, OpenAI, Google Sheets, Gmail, Slack, and a webhook to summarize PDF reports, generate and email discharge summaries, analyze lab values, re ...
0
Built by Rahul Joshi Rahul Joshi
Jul 06, 2026
Verify customs shipping documents with GPT-4o-mini, Gmail and Slack
Quick overview This workflow receives shipment document text via a webhook, uses OpenAI (GPT-4o-mini) to extract key fields from the Bill of Lading, cross-checks the extracted data against Invoice and ...
0
Built by Rahul Joshi Rahul Joshi
Jul 06, 2026
Send ranked freight quote PDFs with GPT-4o, Google Sheets, Gmail and PDFShift
Quick overview This workflow receives shipment requests via webhook, pulls carrier rate data from Google Sheets, uses OpenAI GPT-4o to generate a ranked HTML freight quote, converts it to a PDF with P ...
3
Built by Rahul Joshi Rahul Joshi
Jul 06, 2026
Send daily short-form video ideas to Discord from Google News RSS with Claude
Quick overview This workflow runs daily, pulls the latest Google News RSS items for a keyword, uses Anthropic Claude to generate five short-form video hooks and scripts, then formats and posts the ide ...
0
Built by Jay Emp0 Jay Emp0
Jul 06, 2026
Validate invoice tax compliance from Gmail using Groq, Notion, and Google Sheets
Quick overview This workflow monitors a Gmail inbox for PDF invoices, uses Groq (Llama 3.3) to extract structured invoice fields, validates the invoice against Purchase Orders in Google Sheets and tax ...
0
Jul 06, 2026
Predict supplier churn and generate retention plans with Notion, Slack, and Groq
Quick overview This workflow runs weekly to pull supplier activity from Notion, engineer churn-risk features, and use Groq-hosted LLM prompts to classify supplier churn risk and generate retention pla ...
0
Jul 06, 2026
Review contract risk and rewrite clauses with Groq, Google Drive, Notion, and Slack
Quick overview This workflow watches a Google Drive folder for newly uploaded contract PDFs, extracts key clauses with Groq-hosted LLMs, compares them to standard clauses stored in Notion, generates a ...
0
Jul 06, 2026
Send weekly Salesforce sales behavior coaching reports with Groq and Gmail
Quick overview This scheduled workflow pulls last week’s Salesforce opportunities, tasks, and events for a specific rep, computes activity and pipeline health metrics, uses Groq (LLM) to generate co ...
1
Jul 06, 2026
Track meal nutrition from photos with LINE, Google Gemini and Google Sheets
Quick Overview This workflow receives meal photos via LINE, uses Google Gemini to estimate nutrition facts and generate advice, stores the photo in Google Drive, logs the results to Google Sheets, and ...
1
Jul 06, 2026
Mask PII in hosted chat with OpenAI, Claude, and Saklam Bridge
Quick overview This workflow provides a public hosted chat that routes messages through the Saklam Bridge to mask PII on-premises before calling models like Claude, GPT, or Mistral, then restores the ...
0
Jul 06, 2026
Send daily brand mention digests to Slack with ScraperAPI and OpenAI
Quick Overview This workflow runs every morning at 8am, searches Google News for configured brand terms using ScraperAPI, stores previously seen article URLs in an n8n Data Table, summarizes the new c ...
0
Built by ScraperAPI ScraperAPI
Jul 06, 2026
Re-engage dormant real estate leads with Google Sheets, Gemini and Gmail
Quick Overview This workflow runs daily to find dormant real estate leads in Google Sheets, uses Google Gemini to draft personalized winback emails, sends them via Gmail, updates the lead records, and ...
1
Built by Hassan Hassan
Jul 05, 2026
Schedule weekly social media posts with OpenAI and PostFast
Quick overview This workflow runs every Monday to generate a week of social media posts with OpenAI, then schedules them at preselected high-reach time slots through PostFast for the social accounts y ...
0
Jul 05, 2026
Analyze LinkedIn profiles and posts with Apify and OpenAI GPT-4
Quick overview This workflow collects a LinkedIn profile URL via an n8n form, scrapes the profile’s recent posts with Apify, analyzes the profile and each post using OpenAI models, and stores the re ...
1
Jul 04, 2026
Detect semantic duplicate website pages with Google Drive, Ollama and Postgres
Quick overview This workflow scans HTML files in a Google Drive folder, extracts and stores page text in Postgres, generates embeddings with Ollama and PGVector, then computes chunk-level and page-lev ...
0
Jul 04, 2026
Run a Telegram productivity assistant with OpenRouter, Google Calendar, and Todoist
Quick overview This workflow turns Telegram into a personal assistant that manages your Google Calendar and Todoist, sends daily briefings, and alerts you when meetings are booked or things break. Ho ...
0
Jul 04, 2026