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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Analyze contract risk from Google Drive PDFs with OpenAI, Claude, Gemini, Sheets and Gmail
Quick overview This workflow watches a Google Drive folder for new PDF contracts, extracts their text, analyzes them with OpenAI, Anthropic Claude, or Google Gemini to produce a structured risk assess ...
0
Built by Javed Iqbal Javed Iqbal
Oct 05, 2026
Create UGC ad videos from Telegram briefs with OpenAI, Perplexity, and Kie AI
Quick overview This workflow collects a product brief and photo via Telegram, uploads the image to imgbb, analyzes it with OpenAI and Perplexity, generates a multi-shot storyboard with OpenAI, then us ...
0
Oct 05, 2026
Find free calendar slots from Telegram using Google Calendar, OpenAI and Sheets
Quick overview This workflow receives Telegram messages or voice notes, uses OpenAI to parse the requested date range and preferred time windows, checks busy times via Google Calendar FreeBusy, then r ...
0
Oct 05, 2026
Extract consultant hours from PDF timesheets with Azure OpenAI and Excel
Quick overview This workflow lets you upload one or more PDF timesheets in n8n chat, extracts the text, uses an Azure OpenAI model to total onsite/remote/unknown hours per consultant, appends the resu ...
0
Oct 05, 2026
Scan GDELT news spikes with Gemini and log analysis to Sheets and Slack
Quick overview This workflow runs daily to query the GDELT News API for a chosen theme, detects unusual one-day news-volume spikes, uses Google Gemini to generate a market-impact analysis for a sector ...
1
Oct 05, 2026
Draft Gmail replies to stock and visit inquiries with Claude Haiku
Quick Overview This workflow checks a Gmail inbox every 5 minutes for new inquiry emails, uses Anthropic Claude to classify them as stock or store-visit requests, looks up matching data in n8n Data Ta ...
0
Oct 05, 2026
Match participants and schedule 1:1 Google Meet calls with OpenAI and Google Calendar
Quick overview Collect participant sign-ups, match people into relevant 1:1 pairs with OpenAI, create Google Meet appointments in Google Calendar, and send invitations automatically. Based on a real-w ...
0
Oct 05, 2026
Analyze invoice exceptions weekly and publish RCA reports with Groq and Notion
Quick overview This workflow runs weekly to pull invoice exception data from Google Sheets, uses Groq-hosted LLMs to generate root-cause analysis and upstream process fixes, then publishes a formatted ...
0
Oct 05, 2026
Benchmark procurement KPIs with Google Sheets, Gmail, and Google Gemini
Quick Overview This workflow runs monthly to benchmark procurement KPI results stored in Google Sheets against external peer benchmarks, calculates gap and severity, uses Google Gemini to generate man ...
0
Oct 05, 2026
Score Immoweb real estate deals with Gemini and log to Sheets and Slack
Quick overview Youtube Video: https://youtu.be/FGzYp8k-ONY This workflow runs daily or on demand to scrape Immoweb listings via Apify, compare them against historical prices stored in Google Sheets, ...
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Built by iamvaar iamvaar
Oct 05, 2026
Gate personal data before external sends with Jev, Google Sheets, Gmail, Telegram and gpt-6-luna
A payload only leaves your network when the gate says so. This workflow scores every outbound record for personal data before it reaches an external partner API, then blocks, allows or holds the send, ...
0
Oct 05, 2026
Score and route incidents with Jev Classification, Google Sheets, Gmail, Telegram, and GPT-6-Luna
A production incident report lands on a webhook and the right person is paged while everyone else is still reading the alert. This n8n workflow has Jev Classification score each incident for severity, ...
0
Oct 05, 2026
Triage trust and safety reports with Jev Classification, Google Sheets, Gmail and Telegram
Triage trust and safety reports for a moderation team without losing the ones that matter. This workflow takes every report from your form webhook, sorts it into a policy category with Jev Classificat ...
0
Oct 05, 2026
Split and track WhatsApp restaurant bills with WAHA, Gemini and Sheets
Quick overview This workflow runs a WhatsApp bill-splitting bot using WAHA, Google Gemini for receipt OCR, OpenRouter for funny bill and reminder messages, and Google Sheets to track sessions, contact ...
0
Oct 05, 2026
Triage tender bids with OpenAI 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 ...
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 ...
0
Oct 05, 2026
Track prior authorization requests and chase payer responses with OpenAI and Google Sheets
Prior authorization requests rarely fail loudly. They sit at the payer while the procedure date gets closer. This workflow logs every request as it leaves the clinic, has gpt-6-luna score packet compl ...
0
Oct 05, 2026
Track retail layaway plans and payment reminders with gpt-6-luna and Google Sheets
Layaway plans are easy to start and easy to lose track of, which is where the money quietly walks out of the store. This workflow logs each new plan to Google Sheets, emails the customer their payment ...
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Oct 05, 2026
Track HVAC maintenance agreements and automate reminders with Google Sheets, Gmail, and OpenAI
Maintenance agreements only pay off when someone remembers the next service date. This n8n workflow takes a new agreement from a webhook, has gpt-6-luna write the welcome email, logs it to Google Shee ...
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Oct 05, 2026
Manage farm box shares and weekly harvest emails with gpt-6-luna, Google Sheets and Gmail
Farm box members change their plans, and someone has to catch every skip, pause and pickup swap before the next delivery. This n8n workflow takes each change request from a form, has gpt-6-luna classi ...
0
Oct 05, 2026