Nabin Bhandari
Templates by Nabin Bhandari
AI-powered daily LinkedIn post creator with OpenAI feedback loop and Notion
This n8n template automatically creates and publishes high-quality LinkedIn posts using your brand brief, AI-generated ideas, and structured feedback loops — all powered by OpenAI. Perfect for solo creators, marketers, and startup teams building a consistent presence on LinkedIn. Who's it for Creators and freelancers building a personal brand Social media managers at startups or agencies Marketing teams that want to scale LinkedIn content Anyone tired of manually ideating, writing, and posting daily What it does Triggers daily at a chosen time (default: 9 PM) Fetches new content ideas from your idea-generation workflow Loads your brand brief and previous post feedback Uses OpenAI to craft a branded, engaging LinkedIn post Publishes directly to LinkedIn — no manual copy-paste needed How the AI logic works The AI agent follows a consistent, looped prompt strategy to ensure brand alignment: ++Prompt++ You are a helpful content creator for Nabin Bhandari's personal brand. Use the below steps to create content: Always start by getting the brand brief using the GetBrandBrief tool. Create a post on the requested topic that aligns with the brand brief. Get feedback and a score on the post using the GetContentFeedback tool. If the score is below 0.8, use the feedback to refine the post and repeat. The final output should be the approved post. Bonus: You can fine-tune OpenAI on your own brand tone and style by uploading at least 50 examples of approved posts. This will help ensure even more accurate, on-brand outputs. Requirements OpenAI API Key LinkedIn API credentials set in the LinkedIn node A Notion page (or any storage) with your Brand Brief clearly described Optional: Fine-tuned OpenAI model for higher fidelity How to customize Adjust the AI prompt for different tones (e.g., witty, professional) Swap the idea source (Airtable, Notion, Webhook, etc.) Add manual approval steps before publishing Replace the LinkedIn node with other social media APIs (Twitter/X, Threads) Tips Store a clear and specific brand brief in your Notion page — it directly shapes the AI's tone Add a database of previously approved posts for fine-tuning OpenAI Use additional feedback metrics (likes, engagement) for future iterations
By Nabin BhandariBook appointments with voice using VAPI & Cal.com
This template uses VAPI and Cal.com to book appointments through a voice conversation. It detects whether the user wants to check availability or book an appointment, then responds naturally with real-time scheduling options. Who is this for? This workflow is perfect for: Voice assistant developers AI receptionists and smart concierge tools Service providers (salons, clinics, coaches) needing hands-free scheduling Anyone building voice-based customer experiences What does it do? This workflow turns a natural voice conversation into a working appointment system. It starts with a Webhook connected to your VAPI voice agent. The Set node extracts user intent (like “check availability” or “book now”). A Switch node branches logic based on the intent. If the user wants to check availability, the workflow fetches available times from Cal.com. If the user wants to book, it creates a new event using Cal.com's API. The final result is sent back to VAPI as a conversational voice response. How to use it Import this workflow into your n8n instance. Set up a Webhook node and connect it to your VAPI voice agent. Add your Cal.com API token as a credential (use HTTP Header Auth). Deploy and test using VAPI’s simulator or real phone input. (Optional) Customize the OpenAI prompt if you're using it to process or moderate inputs. Requirements A working VAPI agent A Cal.com account with API access n8n (cloud or self-hosted) An understanding of how to configure webhook and API credentials in n8n Customization Ideas Swap out Cal.com with another booking API (like Calendly) Add a Google Sheets or Supabase node to log appointments Use OpenAI to summarize or sanitize voice inputs before proceeding Build multi-turn conversations in VAPI for more complex bookings
By Nabin BhandariAutomate appointment phone reminders with Google Calendar and Retell AI
Appointment Reminder Agent automates phone call reminders for upcoming appointments by seamlessly connecting Google Calendar with Retell AI. This powerful workflow is designed to help businesses, clinics, and service providers ensure clients never miss their scheduled appointments—reducing no-shows and increasing efficiency. Use Cases Healthcare practitioners reminding patients of upcoming visits Salons, spas, and beauty services confirming bookings Consultants, therapists, and coaches sending appointment reminders Any service-based business wanting to reduce missed appointments Workflow Overview Trigger – A scheduler node runs every day at 9 AM (configurable) to start the workflow. Fetch Events – Pulls all events scheduled in the next 12 hours from Google Calendar. Extract Details – A Code node parses each event’s description for: Name Phone number (must be in E.164 format, e.g., +14155552671) Reason for appointment Start and end time Configure Retell – Uses credentials to set up: from_number (Retell-registered phone number) agent_id (Retell agent ID) Send Call – Calls Retell AI’s API to place a personalized reminder call to the client. Setup Instructions Add your Retell API key to n8n credentials (never hardcode it). Add your Google Calendar account to credentials. Set the from_number (Retell-registered number). Set the agent_id (Retell agent ID). Ensure all calendar event descriptions include required fields (Name, Phone number, Reason, Start & End times) in the specified format. Adjust the scheduler trigger time if needed. Requirements Retell AI account with API key Registered Retell phone number Google Calendar account Event descriptions formatted properly with all required details Customization Options Modify the trigger schedule (e.g., nightly, hourly, or webhook-based). Add logging or tracking (e.g., use Google Sheets or Airtable to log call attempts/results). Tailor the Retell agent script to suit different appointment types (e.g., “Consultation,” “Follow-up,” “Service Visit”). Expand with additional channels (e.g., SMS or email reminders before or after calls).
By Nabin BhandariCreate a WhatsApp customer support bot with OpenAI, calendar & email integration
Who’s it for This template is for businesses, customer support teams, and professionals who want to deliver AI-powered WhatsApp assistance. It helps automate conversations, schedule meetings, answer FAQs, and send follow-up emails — all from WhatsApp. How it works A customer sends a WhatsApp message, which is captured by the Twilio Trigger. The incoming text is formatted and passed to the AI Support Agent. Based on the request, the agent can: Manage Google Calendar events (create, list, delete). Answer questions from your knowledge base (Supabase + embeddings). Draft and send emails via Gmail. Reply directly on WhatsApp with the appropriate response. How to set up Connect your Twilio account with WhatsApp enabled. Add your OpenAI API key. Connect Google Calendar. Connect Gmail. Configure Supabase for knowledge base storage. Requirements Twilio account (with WhatsApp number) OpenAI API key Google Calendar Gmail account Supabase project How to customize Update the Set Fields node with your Twilio number, API keys, and Gmail details. Add custom documents to Supabase for domain-specific FAQs. Adjust AI prompts for different roles (e.g., booking bot, HR assistant, customer support). Extend by adding more tools (CRM, Slack, Notion, etc.) as needed.
By Nabin BhandariAutomated Gmail classification & response system with GPT and WhatsApp alerts
This n8n template uses AI to automatically classify incoming Gmail messages into five categories and route them to the right people or departments. It can also reply automatically and send WhatsApp alerts for urgent or relevant messages. This helps ensure high-priority emails never get missed, while other messages are handled efficiently. How It Works Trigger A new email in Gmail triggers the workflow. Classification (OpenAI GPT) The email is analyzed by an OpenAI GPT model and classified into one of: High Priority Customer Support Promotion Finance/Billing Random/Other Conditional Logic & Actions High Priority → Create draft reply + send WhatsApp alert. Customer Support → Auto-reply + send WhatsApp confirmation alert. Promotion → Summarize email + send WhatsApp promotional alert. Finance/Billing → Forward to finance team + send WhatsApp finance alert. Random/Other → Label and log only. Multi-Channel Output Responses are sent via Gmail. Alerts are sent via WhatsApp (or another compatible API). Setup Instructions Step 1: Gmail Authorization Add a Gmail node in n8n. Connect using OAuth2 and grant read/send permissions. Step 2: OpenAI API Key Get your API key from OpenAI. Add it to n8n credentials for the OpenAI node. Step 3: WhatsApp Integration Use your WhatsApp Business API or a provider like Twilio or 360Dialog. Replace placeholders with your details: [YOURWHATSAPPNUMBER] [YOURFINANCETEAM_NUMBER] [YOURSUPPORTTEAM_NUMBER] Step 4: Import & Run Import the workflow JSON into n8n. Adjust prompts, labels, and routing logic as needed. Execute and monitor results. Good to Know Fully customizable — add or remove categories, adjust responses, and change alert channels. Can be integrated with Slack, Discord, Trello, Notion, Jira, or CRM systems. Scales easily across teams and departments. Requirements Gmail account with OAuth2 credentials set up in n8n OpenAI API key for classification and content generation WhatsApp (or other messaging service) integration Optional: Slack, Notion, CRM, or accounting tool integrations Customization Ideas Create support tickets in Trello, Notion, or Jira from Customer Support emails. Sync Finance emails with QuickBooks, Stripe, or Google Sheets. Replace WhatsApp alerts with Slack or Discord messages. Use Zapier/Make for cross-platform automations.
By Nabin BhandariCreate a WhatsApp voice assistant with Twilio, VAPI, Google Calendar & OpenAI
WhatsApp Voice Agent with Twilio, VAPI, Google Calendar, Gmail & Supabase This workflow turns WhatsApp voice messages into an AI assistant using Twilio, VAPI, and modular MCP servers. It handles scheduling, email, and knowledge queries all by voice. --- 🔎 How it works WhatsApp → Twilio → VAPI A WhatsApp Business number (via TwiML app) receives a voice message. Twilio streams the audio into VAPI for processing. VAPI → n8n Webhook VAPI interprets the intent and routes the request to the correct MCP server. MCP Servers in n8n 📅 Calendar MCP → create, fetch, update, delete Google Calendar events 📧 Gmail MCP → send confirmation or reminder emails 📚 Knowledge Base MCP → query Supabase Vector Store with OpenAI embeddings n8n → VAPI → WhatsApp n8n executes the task and returns the result via VAPI back to the user. --- 🛠️ How to use Import this workflow into your n8n instance. Configure a Twilio WhatsApp-enabled number and connect it to a TwiML app. Point the TwiML app to your VAPI project. Add credentials for Google Calendar, Gmail, Supabase, and OpenAI in n8n. Test by sending a WhatsApp voice command like: “Book a meeting tomorrow at 3pm” “Send a confirmation email to the client” “What’s included in the AI receptionist package?” --- 🎨 Customisation ideas Add more MCP servers (e.g. CRM, Notion, Slack). Swap Supabase for another vector database. Extend Gmail flows with templates or multiple senders. Adjust the VAPI assistant’s tone and role to fit your brand. --- 📌 Requirements Twilio WhatsApp-enabled number + TwiML app (verified in WhatsApp Manager) VAPI project (assistant configured) n8n instance (Cloud or self-hosted) Google Calendar & Gmail credentials Supabase project OpenAI API key --- 💡 Good to know Twilio must have a verified WhatsApp Business number. VAPI handles voice infra + intent routing; n8n only executes actions. The design is modular—easy to expand with new MCP servers. Works best when tested with short, clear commands. --- 🚀 Use cases Hands-free scheduling with Google Calendar. Voice-triggered email confirmations & reminders. Conversational knowledge base access. Extendable to CRMs, team chat, or business workflows. --- 👉 With this setup, you get a scalable voice-first AI agent on WhatsApp that connects seamlessly to your business systems.
By Nabin BhandariGenerate custom cake images with OpenAI GPT & Replicate Flux Schnell
Who’s it for This template is designed for bakeries, event planners, and e-commerce platforms that want to automatically generate custom cake designs. It’s also ideal for marketers or digital creators who need personalized celebratory visuals for social media or email campaigns. How it works This workflow converts simple user input (e.g., “Sarah’s Birthday”) into a creative cake design: Webhook: Captures user input from the Bolt frontend form. OpenAI GPT: Generates a detailed and creative cake design prompt. Replicate Flux Schnell: Produces a unique cake image using the AI-generated prompt. HTTP Response: Sends the final cake image back to the frontend. How to set up Import this template into n8n. Add your OpenAI API Key under n8n Credentials for the OpenAI Chat Model node. Add your Replicate API Token as an HTTP Header Auth credential (do not hardcode it). Update the Webhook node URL in the Bolt frontend form to send a POST request to n8n. (Optional) Customize the OpenAI prompt in the Prompt Generator node to adjust cake style, colors, or decorations. Requirements n8n account (cloud or self-hosted). OpenAI API Key for prompt generation. Replicate API Token for AI image generation. A Bolt frontend or any form that can call the webhook endpoint. How to customize the workflow Replace "cake" with any product type (e.g., mugs, greeting cards, or T-shirts). Add a database node (Google Sheets or Supabase) to log user requests and images. Implement input moderation by adding an OpenAI moderation node before the prompt generation. Frontend
By Nabin Bhandari