LLM Voice & Text Task Management with AI Assistant Workflow

This workflow powers an AI assistant with Siri-like capabilities, automating voice and text-based task management and information retrieval. It processes user inputs via a secure webhook, validates requests, uses OpenAI GPT-4o-mini for conversational responses, integrates Tavily API for real-time internet searches, and queries a Pinecone vector database for personalized data. Conversation history is logged to Airtable for analysis. Key nodes include Webhook for input, IF for validation, Langchain Agent with GPT-4o-mini, Memory Buffer for context, Tavily for searches, Pinecone for personal data, and Airtable for logging. Ideal for individual users or small teams (1-50 users) handling 50+ daily queries, such as personal task management or customer support, reducing response time from 5-10 minutes to seconds.\n\nROI saves 4-8 hours weekly for users managing 100+ queries, improving productivity and personalization. Use cases include personal assistants for scheduling, answering queries, or retrieving user-specific data like notes or contacts. Requirements: OpenAI API key (~$0.01/1K tokens), Tavily API key (~$5/month), Pinecone account (free tier or ~$25/month), Airtable account (free or ~$10/month), n8n instance (free or cloud.n8n.io, ~$20/month), TAVILY_API_KEY, PINECONE_INDEX, AIRTABLE_BASE_ID, AIRTABLE_TABLE_ID env vars. Scalability supports thousands of daily requests; limited by OpenAI rate limits (~1,000 requests/minute), Tavily (~500 searches/day), and Pinecone query limits.\n\nInstall n8n from n8n.io or cloud.n8n.io. Obtain OpenAI API key from platform.openai.com, Tavily key from tavily.com, Pinecone key from pinecone.io, and Airtable credentials from airtable.com. Set env vars. Configure n8n credentials: HTTP Header Auth, OpenAI, Tavily, Pinecone, Airtable. Node setup: Webhook (POST, path: 'siri-assistant'), GPT-4o-mini (temperature 0.7), Memory Buffer (window size 10), Tavily search (max_results 5), Pinecone (topK 5), Airtable (log User Input, AI Response, Session ID, Timestamp). Expose webhook via ngrok.\n\nTest with POST requests (e.g., {input: 'What's the weather in London?', session_id: 'test123'}) using Postman; verify responses and Airtable logs. Common errors: Invalid API keys (401—check credentials), missing input (400—validate request), rate limits (429—add delays). Deploy by activating workflow, sharing webhook URL. Maintenance: Monitor API quotas, rotate keys quarterly, review Airtable logs. Optimize: Adjust GPT temperature (0.5-0.9), tune Pinecone topK (3-7), refine Tavily search depth.", "businessValue": "Saves 4-8 hours/week automating 100+ voice/text queries for personal or team assistance", "setupTime": "20-30 minutes", "difficulty": "Intermediate", "requirements": ["OpenAI API key", "Tavily API key", "Pinecone account", "Airtable account", "TAVILY_API_KEY, PINECONE_INDEX, AIRTABLE_BASE_ID, AIRTABLE_TABLE_ID env vars", "n8n installation, API integration knowledge"], "useCase": "Automating voice and text-based task management and information retrieval for personal or team productivity"