LLM Appointment Voice and Text Management: Multi-Channel with Telegram and Google Calendar

This workflow automates AI-powered voice calling for enterprises, replacing manual outreach, research, and scheduling that take 2-4 hours per interaction for sales teams. The Telegram/Web/API Triggers receive requests, rate limiting validates, the Input Processor Code sanitizes/intent-extracts, the Message Router Switch handles voice/text, voice nodes (Downloader/Transcriber/Processor) transcribe with Whisper, the Quality Gate Validator If scores, the AI Calling Agent LangChain Agent coordinates tools (Contact Finder/Business Intelligence/Voice Agent/Calendar Scheduler/Analytics) using GPT-4o, the Response Enhancer Code formats, the Response Router Switch delivers via Telegram/API, and loggers (Interaction/Performance Tracker Supabase) track KPIs with alerts (Slack/Email) for low quality. It helps sales in mid-sized firms (20-50 staff) handling 100+ calls weekly, enabling intelligent, compliant interactions without dialers, boosting conversions through analytics and automation.\n\nThis workflow saves 8-12 hours weekly on 100 interactions, increasing success by 75%. Use cases include lead qualification for B2B sales, appointment booking for services in enterprises. Suitable for mid-sized teams. Requires OpenAI ($0.03/1k tokens + $0.006/minute Whisper), Supabase ($25/month), Google Calendar (free), Slack/Email (free); n8n (free self-hosted or $20/month cloud). Scalable to 500 calls/week with Pro tiers.\n\nInstall n8n via n8n.io or cloud.n8n.io. Get OpenAI key at platform.openai.com (chat/audio). Set up Supabase at supabase.com (tables for interactions/metrics). Enable Google Calendar API at console.cloud.google.com (OAuth). Create Telegram bot at t.me/botfather (token). Set OPENAI_KEY, SUPABASE_URL/KEY, GOOGLE_CALENDAR_CREDS env vars. Import JSON; triggers auto-set. Configure tools with workflow IDs.\n\nTest: Send 'Call John at Acme Corp'. Verify transcription, contact search, response. Check Supabase logs. Errors: Low quality (fallback), API fail (retry). Activate triggers. Monitor dashboard weekly. Optimize intents; refresh keys quarterly.", "businessValue": "Saves 8-12 hours/week on 100 AI calls", "setupTime": "30-45 minutes", "difficulty": "Intermediate", "requirements": ["OpenAI API ($0.03/1k tokens + $0.006/minute Whisper)", "Supabase ($25/month)", "Google Calendar OAuth (free)", "Telegram Bot (free)", "n8n instance"], "useCase": "Automated enterprise voice outreach and scheduling"