> ## Documentation Index > Fetch the complete documentation index at: https://docs.tuco.ai/llms.txt > Use this file to discover all available pages before exploring further. # Knowledge Base > AI-powered auto-replies that handle inbound conversations. Built into Tuco AI iMessage automation — works with HubSpot, Salesforce, GoHighLevel, and direct API. The Knowledge Base is now part of **AI SDR** — find it at AI SDR → Knowledge tab. ## What the Knowledge Base Does The Knowledge Base (KB) is Tuco's AI reply engine. When a lead replies to your message, the KB can: * **Draft a reply** using your business context, FAQs, and conversation history * **Send automatically** (Autopilot) or **wait for approval** (Copilot) * **Route to the right person** via Telegram and email notifications ## Modes ### Manual No AI involvement. Replies are forwarded to the contact owner via Telegram and email. You reply manually from Unibox. ### Copilot AI drafts a reply and sends it to the contact owner for approval: * Telegram notification with **Approve** / **Reject** buttons * Email with the draft and approval link * The draft appears in Unibox for editing before sending ### Autopilot AI sends the reply automatically without human approval. Use for high-volume, low-risk conversations. ## How It Works 1. Lead replies → message is debounced (60 seconds of silence) 2. All messages in the batch are combined 3. KB generates a contextual reply using your uploaded knowledge 4. **Copilot**: draft sent to owner for approval via Telegram + email 5. **Autopilot**: reply sent immediately, notification sent to owner ## Notifications The contact owner receives notifications via: * **Telegram** (personal channel if linked, workspace channel as fallback) * **Email** (contact owner's email, with [support@tuco.ai](mailto:support@tuco.ai) CC'd) If the contact owner can't be found, notifications go to the earliest workspace member. ## Daily Limits Set a max auto-replies per day limit in **Integrations → Telegram → Auto-Reply Limits** (default: 50, max: 500). Once reached, new replies wait until the next day. ## Multi-Bubble Replies The AI Responder sends replies as multiple short iMessage bubbles instead of one long message. This looks more natural: * Replies split into 2-4 short messages * Typing indicator ("...") appears between each bubble * 1-3 second delay between bubbles (based on message length) * All gaps and throttles bypassed for AI replies — leads don't wait 30 seconds between bubbles ## Reactions The AI Responder detects iMessage reactions (tapbacks) and does NOT treat them as messages: * Heart, thumbs up/down, laugh, emphasize, question, and custom emoji reactions are recognized * No AI call is wasted on reactions * No notifications sent for reactions ## Voice Notes When a lead sends a voice note: * Audio file is downloaded and stored * Displayed as an audio player in Unibox * Optional: transcribe via Whisper AI (enable in workspace settings) * Transcription passed to AI Responder as the inbound message ## Goal Bot Integration When a lead is enrolled in a Goal Bot, the AI Responder uses the goal bot's stage-specific prompt instead of generic knowledge base search. See [Goal Bots](/features/goal-bots) for details.