{ "name": "main-vapi-handler", "nodes": [ { "parameters": { "httpMethod": "POST", "path": "vapi-server-url", "responseMode": "responseNode" }, "id": "webhook-vapi", "name": "Webhook: VAPI Server URL", "type": "n8n-nodes-base.webhook", "typeVersion": 2, "position": [ 100, 300 ], "notes": "Receives all VAPI events. Verify x-vapi-secret header in production." }, { "parameters": { "jsCode": "// Extract VAPI event type and validate\nconst body = $input.first().json.body;\nconst messageType = body.message?.type || 'unknown';\nconst call = body.message?.call || {};\nconst customerPhone = call.customer?.number || null;\nconst callId = call.id || null;\n\nreturn [{\n json: {\n messageType,\n customerPhone,\n callId,\n fullPayload: body,\n functionCall: body.message?.functionCall || null,\n transcript: body.message?.transcript || null,\n endOfCallReport: body.message?.endOfCallReport || null\n }\n}];" }, "id": "parse-vapi-event", "name": "Code: Parse VAPI Event", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 320, 300 ] }, { "parameters": { "rules": { "values": [ { "conditions": { "conditions": [ { "leftValue": "={{ $json.messageType }}", "rightValue": "assistant-request", "operator": { "type": "string", "operation": "equals" } } ], "combinator": "and" }, "renameOutput": "Assistant Request" }, { "conditions": { "conditions": [ { "leftValue": "={{ $json.messageType }}", "rightValue": "function-call", "operator": { "type": "string", "operation": "equals" } } ], "combinator": "and" }, "renameOutput": "Function Call" }, { "conditions": { "conditions": [ { "leftValue": "={{ $json.messageType }}", "rightValue": "end-of-call-report", "operator": { "type": "string", "operation": "equals" } } ], "combinator": "and" }, "renameOutput": "End of Call" }, { "conditions": { "conditions": [ { "leftValue": "={{ $json.messageType }}", "rightValue": "status-update", "operator": { "type": "string", "operation": "equals" } } ], "combinator": "and" }, "renameOutput": "Status Update" } ] }, "mode": "rules", "options": { "fallbackOutputType": "extra" } }, "id": "switch-event-type", "name": "Switch: VAPI Event Type", "type": "n8n-nodes-base.switch", "typeVersion": 3, "position": [ 540, 300 ] }, { "parameters": { "workflowId": "={{ $vars.SUB_CUSTOMER_LOOKUP_ID }}" }, "id": "ar-customer-lookup", "name": "Assistant Request: Customer Lookup", "type": "n8n-nodes-base.executeWorkflow", "typeVersion": 1, "position": [ 760, 100 ] }, { "parameters": { "workflowId": "={{ $vars.SUB_MEMORY_RETRIEVAL_ID }}" }, "id": "ar-memory-retrieval", "name": "Assistant Request: Memory Retrieval", "type": "n8n-nodes-base.executeWorkflow", "typeVersion": 1, "position": [ 980, 100 ] }, { "parameters": { "jsCode": "// Build dynamic VAPI assistant config with RAG context\nconst customer = $('Assistant Request: Customer Lookup').first().json.customer_profile;\nconst memory = $('Assistant Request: Memory Retrieval').first().json;\nconst isNew = $('Assistant Request: Customer Lookup').first().json.is_new_customer;\n\nconst firstName = customer?.name?.split(' ')[0] || 'love';\nconst ragContext = memory?.rag_context || 'No previous interaction history.';\nconst lastAppt = memory?.last_appointment;\n\nlet firstMessage = isNew\n ? `Hey love! Welcome to Sweet Hand Braids \u2014 I'm your AI stylist! Whether you're looking for a fresh new look or need to book an appointment, I've got you. What style are you thinking about?`\n : `Hey ${firstName}! Welcome back to Sweet Hand Braids! ${lastAppt ? `Last time you got ${lastAppt.service_type} and looked amazing!` : ''} What can I do for you today?`;\n\nconst systemPrompt = `You are SweetHand, the AI hair braiding stylist at Sweet Hand Braids salon.\n\nPERSONALITY:\n- Warm, confident, knowledgeable \u2014 like a best friend who is an expert braider\n- Use natural, friendly language. Keep responses SHORT (2-3 sentences) since this is voice\n- Be enthusiastic about hair \u2014 you LOVE what you do\n- Give honest advice with kindness\n\nCUSTOMER CONTEXT:\n${ragContext}\n\nCURRENT CUSTOMER: ${customer?.name || 'New Customer'}\nHair Profile: ${JSON.stringify(customer?.hair_profile || 'Unknown \u2014 ask about their hair')}\nVisit Count: ${customer?.lifetime_visits || 0}\n\nRULES:\n1. Keep responses to 2-3 sentences MAX \u2014 this is a phone call\n2. If they want to book, use the book_appointment function\n3. Always confirm details before booking: style, date, time\n4. If unsure about their hair type, ask them to describe it\n5. When discussing styles, mention estimated time and price range\n6. End interactions with a clear next step`;\n\nreturn [{\n json: {\n assistant: {\n firstMessage: firstMessage,\n model: {\n provider: 'openai',\n model: 'gpt-4o',\n temperature: 0.7,\n maxTokens: 250,\n systemMessage: systemPrompt,\n tools: [\n {\n type: 'function',\n function: {\n name: 'book_appointment',\n description: 'Book a hair braiding appointment for the customer',\n parameters: {\n type: 'object',\n properties: {\n service_type: { type: 'string', description: 'Type of braiding service (e.g., box_braids, goddess_locs, cornrows, passion_twists)' },\n preferred_date: { type: 'string', description: 'Preferred date in YYYY-MM-DD format' },\n preferred_time: { type: 'string', description: 'Preferred time in HH:MM format' },\n notes: { type: 'string', description: 'Style details: color, length, thickness preferences' }\n },\n required: ['service_type', 'preferred_date', 'preferred_time']\n }\n }\n },\n {\n type: 'function',\n function: {\n name: 'check_availability',\n description: 'Check available appointment slots for a given date',\n parameters: {\n type: 'object',\n properties: {\n start_date: { type: 'string', description: 'Start date YYYY-MM-DD' },\n end_date: { type: 'string', description: 'End date YYYY-MM-DD (optional, defaults to start_date)' },\n service_duration_minutes: { type: 'integer', description: 'Estimated service duration in minutes' }\n },\n required: ['start_date']\n }\n }\n },\n {\n type: 'function',\n function: {\n name: 'cancel_appointment',\n description: 'Cancel the customers most recent or specified appointment',\n parameters: {\n type: 'object',\n properties: {\n reason: { type: 'string', description: 'Reason for cancellation' }\n }\n }\n }\n },\n {\n type: 'function',\n function: {\n name: 'reschedule_appointment',\n description: 'Reschedule an existing appointment to a new date and time',\n parameters: {\n type: 'object',\n properties: {\n new_date: { type: 'string', description: 'New date YYYY-MM-DD' },\n new_time: { type: 'string', description: 'New time HH:MM' }\n },\n required: ['new_date', 'new_time']\n }\n }\n }\n ]\n },\n voice: {\n provider: '11labs',\n voiceId: 'EXAVITQu4vr4xnSDxMaL'\n },\n silenceTimeoutSeconds: 30,\n maxDurationSeconds: 600,\n endCallFunctionEnabled: true\n }\n }\n}];" }, "id": "ar-build-config", "name": "Code: Build Assistant Config", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 1200, 100 ] }, { "parameters": { "respondWith": "json", "responseBody": "={{ JSON.stringify($json) }}" }, "id": "ar-respond", "name": "Respond: Assistant Config", "type": "n8n-nodes-base.respondToWebhook", "typeVersion": 1, "position": [ 1420, 100 ] }, { "parameters": { "rules": { "values": [ { "conditions": { "conditions": [ { "leftValue": "={{ $json.functionCall.name }}", "rightValue": "book_appointment", "operator": { "type": "string", "operation": "equals" } } ], "combinator": "and" }, "renameOutput": "Book" }, { "conditions": { "conditions": [ { "leftValue": "={{ $json.functionCall.name }}", "rightValue": "check_availability", "operator": { "type": "string", "operation": "equals" } } ], "combinator": "and" }, "renameOutput": "Check" }, { "conditions": { "conditions": [ { "leftValue": "={{ $json.functionCall.name }}", "rightValue": "cancel_appointment", "operator": { "type": "string", "operation": "equals" } } ], "combinator": "and" }, "renameOutput": "Cancel" }, { "conditions": { "conditions": [ { "leftValue": "={{ $json.functionCall.name }}", "rightValue": "reschedule_appointment", "operator": { "type": "string", "operation": "equals" } } ], "combinator": "and" }, "renameOutput": "Reschedule" } ] }, "mode": "rules" }, "id": "fc-switch-function", "name": "Switch: Function Name", "type": "n8n-nodes-base.switch", "typeVersion": 3, "position": [ 760, 300 ] }, { "parameters": { "workflowId": "={{ $vars.SUB_CUSTOMER_LOOKUP_ID }}" }, "id": "fc-customer-lookup", "name": "FC: Customer Lookup", "type": "n8n-nodes-base.executeWorkflow", "typeVersion": 1, "position": [ 980, 220 ] }, { "parameters": { "workflowId": "={{ $vars.SUB_APPOINTMENT_MANAGER_ID }}" }, "id": "fc-book", "name": "FC: Book Appointment", "type": "n8n-nodes-base.executeWorkflow", "typeVersion": 1, "position": [ 1200, 220 ] }, { "parameters": { "workflowId": "={{ $vars.SUB_APPOINTMENT_MANAGER_ID }}" }, "id": "fc-check", "name": "FC: Check Availability", "type": "n8n-nodes-base.executeWorkflow", "typeVersion": 1, "position": [ 1200, 340 ] }, { "parameters": { "workflowId": "={{ $vars.SUB_APPOINTMENT_MANAGER_ID }}" }, "id": "fc-cancel", "name": "FC: Cancel Appointment", "type": "n8n-nodes-base.executeWorkflow", "typeVersion": 1, "position": [ 1200, 460 ] }, { "parameters": { "workflowId": "={{ $vars.SUB_APPOINTMENT_MANAGER_ID }}" }, "id": "fc-reschedule", "name": "FC: Reschedule Appointment", "type": "n8n-nodes-base.executeWorkflow", "typeVersion": 1, "position": [ 1200, 580 ] }, { "parameters": { "jsCode": "// Format function result for VAPI\nconst result = $input.first().json;\nreturn [{ json: { result: JSON.stringify(result) } }];" }, "id": "fc-format-result", "name": "Code: Format Function Result", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 1420, 380 ] }, { "parameters": { "respondWith": "json", "responseBody": "={{ JSON.stringify({ result: $json.result }) }}" }, "id": "fc-respond", "name": "Respond: Function Result", "type": "n8n-nodes-base.respondToWebhook", "typeVersion": 1, "position": [ 1640, 380 ] }, { "parameters": { "workflowId": "={{ $vars.SUB_CUSTOMER_LOOKUP_ID }}" }, "id": "eoc-customer-lookup", "name": "EOC: Customer Lookup", "type": "n8n-nodes-base.executeWorkflow", "typeVersion": 1, "position": [ 760, 560 ] }, { "parameters": { "workflowId": "={{ $vars.SUB_MEMORY_WRITER_ID }}" }, "id": "eoc-memory-writer", "name": "EOC: Store Transcript in Memory", "type": "n8n-nodes-base.executeWorkflow", "typeVersion": 1, "position": [ 980, 560 ] }, { "parameters": { "respondWith": "json", "responseBody": "={{ JSON.stringify({ status: 'ok' }) }}" }, "id": "eoc-respond", "name": "Respond: EOC Ack", "type": "n8n-nodes-base.respondToWebhook", "typeVersion": 1, "position": [ 1200, 560 ] }, { "parameters": { "respondWith": "json", "responseBody": "={{ JSON.stringify({ status: 'ok' }) }}" }, "id": "status-respond", "name": "Respond: Status Ack", "type": "n8n-nodes-base.respondToWebhook", "typeVersion": 1, "position": [ 760, 700 ] }, { "parameters": { "respondWith": "json", "responseBody": "={{ JSON.stringify({ status: 'ok' }) }}" }, "id": "fallback-respond", "name": "Respond: Fallback Ack", "type": "n8n-nodes-base.respondToWebhook", "typeVersion": 1, "position": [ 760, 820 ] } ], "connections": { "Webhook: VAPI Server URL": { "main": [ [ { "node": "Code: Parse VAPI Event", "type": "main", "index": 0 } ] ] }, "Code: Parse VAPI Event": { "main": [ [ { "node": "Switch: VAPI Event Type", "type": "main", "index": 0 } ] ] }, "Switch: VAPI Event Type": { "main": [ [ { "node": "Assistant Request: Customer Lookup", "type": "main", "index": 0 } ], [ { "node": "Switch: Function Name", "type": "main", "index": 0 } ], [ { "node": "EOC: Customer Lookup", "type": "main", "index": 0 } ], [ { "node": "Respond: Status Ack", "type": "main", "index": 0 } ], [ { "node": "Respond: Fallback Ack", "type": "main", "index": 0 } ] ] }, "Assistant Request: Customer Lookup": { "main": [ [ { "node": "Assistant Request: Memory Retrieval", "type": "main", "index": 0 } ] ] }, "Assistant Request: Memory Retrieval": { "main": [ [ { "node": "Code: Build Assistant Config", "type": "main", "index": 0 } ] ] }, "Code: Build Assistant Config": { "main": [ [ { "node": "Respond: Assistant Config", "type": "main", "index": 0 } ] ] }, "Switch: Function Name": { "main": [ [ { "node": "FC: Customer Lookup", "type": "main", "index": 0 } ], [ { "node": "FC: Check Availability", "type": "main", "index": 0 } ], [ { "node": "FC: Customer Lookup", "type": "main", "index": 0 } ], [ { "node": "FC: Customer Lookup", "type": "main", "index": 0 } ] ] }, "FC: Customer Lookup": { "main": [ [ { "node": "FC: Book Appointment", "type": "main", "index": 0 }, { "node": "FC: Cancel Appointment", "type": "main", "index": 0 }, { "node": "FC: Reschedule Appointment", "type": "main", "index": 0 } ] ] }, "FC: Book Appointment": { "main": [ [ { "node": "Code: Format Function Result", "type": "main", "index": 0 } ] ] }, "FC: Check Availability": { "main": [ [ { "node": "Code: Format Function Result", "type": "main", "index": 0 } ] ] }, "FC: Cancel Appointment": { "main": [ [ { "node": "Code: Format Function Result", "type": "main", "index": 0 } ] ] }, "FC: Reschedule Appointment": { "main": [ [ { "node": "Code: Format Function Result", "type": "main", "index": 0 } ] ] }, "Code: Format Function Result": { "main": [ [ { "node": "Respond: Function Result", "type": "main", "index": 0 } ] ] }, "EOC: Customer Lookup": { "main": [ [ { "node": "EOC: Store Transcript in Memory", "type": "main", "index": 0 } ] ] }, "EOC: Store Transcript in Memory": { "main": [ [ { "node": "Respond: EOC Ack", "type": "main", "index": 0 } ] ] } }, "settings": { "executionOrder": "v1", "errorWorkflow": "sub-error-handler" }, "tags": [ { "name": "sweethandbraids" }, { "name": "main-workflow" }, { "name": "vapi" }, { "name": "production" } ] }