Browse 7,043 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.
7,043 workflows
in Langchain
Nodes:
Sort:
Date:
Quick overview
This workflow receives scale calibration results via webhook, calculates NIST Handbook 44-style tolerance deviations, uses OpenAI to classify each device outcome, and routes compliant, ...
Quick overview
This workflow receives operations requests via webhook, uses Jev (TypeSafe) to classify and evaluate them, logs outcomes to Google Sheets, and notifies teams via Gmail and Telegram, the ...
Quick overview
This workflow runs every 5 minutes to fetch NASA DSN status, NASA DONKI CME events, NOAA GOES X-ray flux, and NASA NeoWs near‑Earth object data, then uses an OpenRouter-hosted LLM to ...
Quick overview
This workflow monitors Gmail and a Google Drive folder for new invoice/receipt files, uses Google Gemini to extract structured invoice data and classify expense categories, logs results ...
HOA architectural requests that no longer disappear into an inbox. This workflow takes each homeowner change request through an n8n Form, has AI summarize and flag it for the board, logs everything in ...
Quick Overview
This workflow runs every four hours to search Reddit, Hacker News, and Google News (via Serper) for mentions of your brand and competitors, uses OpenAI to analyze sentiment and crisis l ...
Quick overview
Ask a question in chat and get an answer that survived review: one model drafts it, a second challenges it, and a third rules on the result, either approving the answer or replacing it ...
Quick overview
This weekly workflow pulls page-and-query performance from Google Search Console, identifies URLs with high impressions but near-zero clicks, classifies the likely cause based on averag ...
Quick overview
This workflow lets you generate SubmitRax form HTML via an Anthropic Claude agent (using the SubmitRax MCP server) and then publish the form as an HTML file to a GitHub Pages repository ...
Quick overview
This workflow monitors an RFI Gmail inbox, uses OpenAI to classify and extract RFI details (including PDF text), logs everything to n8n Data Tables, routes new questions to the design t ...
Quick overview
Youtube Video: https://youtu.be/Bn1u3pc0Lpo
This workflow checks a Google Sheets attendance tracker every day and messages parents of absent students via WhatsApp, then uses Google Gem ...
Quick overview
Youtube Video: https://youtu.be/0B5IAirPe5o
This workflow captures vehicle inquiries via an n8n Form, looks up inventory details in Google Sheets, uses Google Gemini with Redis chat mem ...
Quick overview
This workflow runs on a daily schedule, reads invoice PDFs from a local folder, extracts structured invoice data with OpenAI (gpt-4o-mini), validates required fields and subtotal math, ...
Quick overview
This workflow collects a research request via an n8n form, runs two live Google searches via the Serper API, uses OpenAI to analyze the sources and write a structured report, then logs ...
Quick overview
This workflow collects daily KPIs in Postgres, builds robust baselines, detects anomalies each morning, and then investigates them with an OpenRouter (Claude) agent using Postgres and G ...
Dental lab cases that keep clinics in the loop without anyone chasing updates. This workflow takes new case submissions from an n8n Form, has gpt-6-luna check that the case is complete and draft the c ...
Freight check-ins that update the load board while the driver is still on the road. This workflow takes every driver check-in by webhook, has gpt-6-luna normalize the status and risk, updates your Goo ...
Quick overview
Converts unstructured Telegram standup messages into individual Notion task cards using OpenAI. Validates task statuses, prevents duplicates with deterministic source keys, alerts proje ...
Quick overview
This workflow runs daily to find and email new leads from Apollo, using Serper news search and OpenAI to draft personalized outreach, then tracks everything in Google Sheets and handles ...
Quick overview
This workflow runs every 15 minutes to triage unread Gmail and Slack mentions with OpenAI, request approvals in Slack before sending replies, detect Google Calendar conflicts and update ...