Supira Inc.
Templates by Supira Inc.
Auto-generate & post social media content with GPT-4, Notion & Instagram API
How It Works This workflow automates social media content creation and posting. It starts by receiving raw text input through a Webhook (for example, from LINE Bot) and saves the content into a Notion database for centralized storage. Next, GPT-4 generates platform-specific captions for Instagram, Threads, X/Twitter, and Blog. Instagram captions are prepared for automatic publishing, while Threads, X, and Blog drafts are stored in Notion for later review and manual posting. The workflow then fetches book cover images or other visuals from external APIs such as Google Books, OpenBD, or OpenLibrary. The chosen image is uploaded to Cloudinary to generate a secure, optimized URL. Finally, the Instagram Graph API is used to create a media container and publish the post automatically with the caption and image. This way, the workflow provides both automation for Instagram and reusable drafts for other platforms. Requirements Notion account with a database configured for text and captions Cloudinary account for image hosting Instagram Business account connected to the Meta Developer Platform GPT-4 (via OpenAI or LangChain node in n8n) Setup Instructions Configure the Webhook node to capture text input. Update the Notion database ID and property keys to match your schema. Add Cloudinary credentials (【cloudname】, 【uploadpreset】) in the HTTP Request node. Set 【IGACCESSTOKEN】 as an environment variable. Activate the workflow and test with a sample input. Customization Adjust caption prompts for style, hashtags, or character limits. Add additional GPT nodes for more platforms. Replace or extend image sources as needed. Integrate a scheduler (Cron node) to post at specific times.
By Supira Inc.Gmail email classifier with GPT-4 auto-generated draft replies
How It Works This workflow automatically classifies incoming Gmail messages into categories such as High Priority, Inquiry, and Finance/Billing, and then generates professional draft replies using GPT-4. By combining Gmail integration with AI-powered text generation, the workflow helps business owners and freelancers reduce the time spent managing emails while ensuring that important messages are handled quickly and consistently. When a new email arrives, the workflow: Triggers via Gmail. Uses an AI classifier to categorize the message. Applies the appropriate Gmail label. Passes the email body to GPT-4 to generate a tailored draft reply. Saves the draft in Gmail, ready for review and sending. Requirements A Gmail account with API access enabled. An OpenAI API key with GPT-4 access. n8n account or self-hosted instance. Setup Instructions Import this workflow into your n8n instance. Under Credentials, connect your Gmail account and OpenAI API key. Replace placeholder YOURLABELID_XXX values with your Gmail label IDs (obtainable via Gmail → List Labels). Execute the workflow and check that draft replies are generated in your Gmail account. Customization Add or edit categories to fit your business needs (e.g., “Sales Leads” or “Support”). Adjust the GPT-4 prompts inside each “Generate Draft” node to match your preferred tone and style. Combine with other workflows (e.g., CRM integration, Slack alerts) for a complete email automation system. This template is especially useful for small businesses and freelancers who want to save time, improve response speed, and maintain professional communication without manually writing every reply.
By Supira Inc.Collect & summarize multilingual news with NewsAPI, OpenAI & Google Sheets
How it works This workflow automatically collects the latest news articles from both English and Japanese sources using NewsAPI, summarizes them with OpenAI, and appends the results into a Google Sheet. The summaries are concise (about 50 characters) in Japanese, making it easy to review news highlights at a glance. Set up steps Create a Google Sheet with two tabs: 01_Input (columns: Keyword, SearchRequired) 02_Output (columns: Date, Keyword, Summary, URL) Enter your own Google Sheet ID and tab names in the workflow. Add your NewsAPI key in the HTTP Request nodes. Connect your OpenAI account (or deactivate the summarization node if not needed). Run the workflow manually or use the daily schedule trigger at 13:00. This template is ready to use with minimal changes. Sticky notes inside the workflow provide extra guidance.
By Supira Inc.Automate invoice data extraction with OCR.Space, GPT & Google Sheets
Overview This template automates invoice processing for teams that currently copy data from PDFs into spreadsheets by hand. It is ideal for small businesses, back-office teams, accounting, and operations who want to reduce manual entry, avoid human error, and never miss a payment deadline. The workflow watches a structured Google Drive folder, performs OCR, converts the text into clean structured JSON with an LLM, and appends one row per invoice into Google Sheets. It preserves a link back to the original file for easy review and audit. Designed for small businesses and back-office teams. Eliminates manual typing and reduces errors. Prevents missed due dates by centralizing data. Works with monthly subfolders like "2025年10月分" (meaning "October 2025"). Keeps a Google Drive link to each invoice file. How It Works The workflow runs on a schedule, scans your Drive folder hierarchy, OCRs the PDFs/images, cleans the text, extracts key fields with an LLM, and appends a row to Google Sheets per invoice. Each step is modular so you can swap services or tweak prompts without breaking the flow. Scheduled trigger runs on a recurring cadence. Scan the parent folder in Google Drive. Auto-detect the current-month folder (e.g., a folder named "2025年10月分" meaning "October 2025"). Download PDFs/images from the detected folder. Extract text using the OCR.Space API. Clean noise and normalize with a Code node. Use an OpenAI model to extract invoicedate, duedate, client_name, line items, totals, and bank info to JSON. Append one row per invoice to Google Sheets. Requirements Before you start, make sure you have access to the required services and that your Drive is organized into monthly subfolders so the workflow can find the right files. n8n account. Google Drive access. Google Sheets access. OCR.Space API key (set as <yourocrapi_key>). OpenAI / LLM API credential (e.g., <youropenaicredential_name>). Invoice PDFs organized by month on Google Drive (e.g., folders like "2025年10月分"). Setup Instructions Import the workflow, replace placeholder credentials and IDs with your own, and enable the schedule. You can also run it manually for testing. The parent-folder query and sheet ID must reflect your environment. Replace <yourgoogledrivecredentialid> and <yourgoogledrivecredentialname> with your Google Drive Credential. Adjust the parent folder search query to your invoice repository name. Replace the Sheets document ID <yourgooglesheet_id> with your spreadsheet ID. Ensure your OpenAI credential <youropenaicredential_name> is selected. Set your OCR.Space key as <yourocrapi_key>. Enable the Schedule Trigger after testing. Customization This workflow is easily extensible. You can adapt folder naming rules, enrich the spreadsheet schema, and expand the AI prompt to extract custom fields specific to your company. It also works beyond invoices, covering receipts, quotes, or purchase orders with minor changes. Change the monthly folder naming rule such as {{$now.setZone("Asia/Tokyo").format("yyyy年MM月")}}分 to match your convention. Modify or extend Google Sheets column mappings as needed. Tune the AI prompt to extract project codes, owner names, or custom fields. Repurpose for receipts, quotes, or purchase orders. Localize date formats and tax calculation rules to your standards.
By Supira Inc.