iMessage食物照片营养分析（GPT-4视觉与记忆存储）
高级
这是一个Personal Productivity, AI Chatbot领域的自动化工作流，包含 19 个节点。主要使用 If, Code, Webhook, Aggregate, HttpRequest 等节点。 iMessage食物照片营养分析（GPT-4视觉与记忆存储）
前置要求
- •HTTP Webhook 端点（n8n 会自动生成）
- •可能需要目标 API 的认证凭证
- •OpenAI API Key
- •PostgreSQL 数据库连接信息
使用的节点 (19)
工作流预览
可视化展示节点连接关系，支持缩放和平移
导出工作流
复制以下 JSON 配置到 n8n 导入，即可使用此工作流
{
"meta": {
"instanceId": "9fe2e2e308ee9fa575b11a458a16465194c029a4f53a09a925eb0b5fa7b5761a",
"templateCredsSetupCompleted": true
},
"nodes": [
{
"id": "22f351db-4581-450b-a260-b50962f4f35a",
"name": "便签",
"type": "n8n-nodes-base.stickyNote",
"position": [
1220,
0
],
"parameters": {
"width": 880,
"height": 1000,
"content": "## 使用 n8n HTTP 请求节点发送 Blooio.com 消息"
},
"typeVersion": 1
},
{
"id": "334e086c-872b-4a75-8a33-aaec66ec3f02",
"name": "发送消息",
"type": "n8n-nodes-base.httpRequest",
"position": [
1280,
780
],
"parameters": {
"url": "https://api.blooio.com/send-message",
"method": "POST",
"options": {},
"sendBody": true,
"sendHeaders": true,
"authentication": "genericCredentialType",
"bodyParameters": {
"parameters": [
{
"name": "identifier",
"value": "={{ $('Receive Message (From Blooio)').item.json.body.message.sender }}"
},
{
"name": "message",
"value": "={{ $json.output }}"
}
]
},
"genericAuthType": "httpBearerAuth",
"headerParameters": {
"parameters": [
{
"name": "accept",
"value": "application/json"
}
]
}
},
"credentials": {
"httpBearerAuth": {
"id": "WxjvtozS2uLOEBkw",
"name": "Blooio Bearer Auth account"
}
},
"typeVersion": 4.2
},
{
"id": "d4df3023-17d3-44f1-bafd-1a70a370f98f",
"name": "便签 1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-2000,
980
],
"parameters": {
"color": 3,
"width": 780,
"height": 360,
"content": "## 消息已读 Webhook："
},
"typeVersion": 1
},
{
"id": "9330aeee-82ed-4549-9927-c7802a809cd9",
"name": "便签 2",
"type": "n8n-nodes-base.stickyNote",
"position": [
-2000,
380
],
"parameters": {
"color": 6,
"width": 780,
"height": 580,
"content": "## 消息接收 Webhook："
},
"typeVersion": 1
},
{
"id": "b7a92947-9617-4639-8c1a-b80242bb3571",
"name": "AI Agent",
"type": "@n8n/n8n-nodes-langchain.agent",
"position": [
-160,
780
],
"parameters": {
"text": "=User message: {{ $('Receive Message (From Blooio)').item.json.body.message.content }}",
"options": {
"systemMessage": "<identity>\nYou are a world-class AI Nutrition Analyst trained to estimate nutrition from food photos using visual analysis, expert knowledge, and common food portion assumptions.\n</identity>\n\n<mission>\nYour task is to analyze a single food photo and provide a complete nutritional summary, without asking the user for any additional information. You must visually identify all items, estimate portion sizes, and calculate total calories and nutrients. Your response should be accurate, clear, and formatted as a friendly iMessage-style explanation — no JSON, no technical markup.\n\n</mission>\n\n<analysis_protocol>\n1. **Identify** all foods and beverages in the image.\n2. **Estimate** portion sizes using visual cues and standard serving sizes.\n3. **Calculate** total:\n - Calories\n - Protein\n - Carbs\n - Fat\n - Fiber\n - Sugar\n - Sodium\n4. **Score**:\n - Confidence Score (0.0 to 1.0): How sure you are based on image clarity, food visibility, and assumptions.\n - Health Score (0 to 10): Nutritional quality based on processing, balance, and content.\n\n</analysis_protocol>\n\n<response_format>\nRespond in a conversational tone. Start by describing the identified meal. Then list the estimated nutrition facts in simple bullet points. Finally, include:\n- A health rating from 0–10.\n- A confidence rating from 0.0–1.0.\n- A short, friendly rationale for your estimate and assumptions.\n\n⚠️ Do NOT ask the user for input or confirmation.\n⚠️ Do NOT include JSON, markdown, or structured code output.\n⚠️ Speak as if you're texting back a friend with a nutrition summary.\n\nGive the user a day report so far, a week report so far and a month report so far.</response_format>\n\n<error_handling>\nIf the image is unclear or does not show food, reply kindly to get the user to upload a different image or images.\n</error_handling>",
"passthroughBinaryImages": true
},
"promptType": "define"
},
"typeVersion": 1.9
},
{
"id": "79696185-e706-4c36-83c1-8f7294f5ec8b",
"name": "OpenAI 聊天模型",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
-160,
960
],
"parameters": {
"model": {
"__rl": true,
"mode": "list",
"value": "gpt-4.1-mini",
"cachedResultName": "gpt-4.1-mini"
},
"options": {}
},
"credentials": {
"openAiApi": {
"id": "JrqIdyKAvwxNgaEM",
"name": "Tay - SLUG"
}
},
"typeVersion": 1.2
},
{
"id": "cc4c91c1-aacc-4a43-a530-5f902cb4274f",
"name": "Postgres 聊天记忆",
"type": "@n8n/n8n-nodes-langchain.memoryPostgresChat",
"position": [
-160,
1120
],
"parameters": {
"tableName": "n8n_calorie_tracker",
"sessionKey": "={{ $('Receive Message (From Blooio)').item.json.body.message.conversation.id }}",
"sessionIdType": "customKey",
"contextWindowLength": 200
},
"credentials": {
"postgres": {
"id": "asiZOOtRYUAuWsWd",
"name": "Neon"
}
},
"typeVersion": 1.3
},
{
"id": "3860f4f4-1af7-4951-a52c-3d7c7f07cb9a",
"name": "接收消息 (来自 Blooio)",
"type": "n8n-nodes-base.webhook",
"position": [
-1440,
760
],
"webhookId": "00dbce9f-70b6-4e2d-9da4-ba8747f95e5b",
"parameters": {
"path": "receive-event",
"options": {},
"httpMethod": "POST"
},
"typeVersion": 2
},
{
"id": "40a29005-81ce-4fea-9572-230d27a79894",
"name": "HTTP 请求",
"type": "n8n-nodes-base.httpRequest",
"position": [
400,
400
],
"parameters": {
"url": "={{ $json.url }}",
"options": {}
},
"typeVersion": 4.2
},
{
"id": "7b06c8a8-c330-45bc-a3a1-5dd1353b8603",
"name": "如果有图像，下载它们",
"type": "n8n-nodes-base.if",
"position": [
-700,
760
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "551f9536-48c3-4757-a58b-35ee1ef81a80",
"operator": {
"type": "array",
"operation": "lengthGt",
"rightType": "number"
},
"leftValue": "={{ $('Receive Message (From Blooio)').item.json.body.message.attachments }}",
"rightValue": 0
}
]
}
},
"typeVersion": 2.2
},
{
"id": "e3bb4c52-b673-4d97-b9b5-e980349366ec",
"name": "遍历项目",
"type": "n8n-nodes-base.splitInBatches",
"position": [
40,
380
],
"parameters": {
"options": {
"reset": false
}
},
"typeVersion": 3
},
{
"id": "f14e056e-2756-4ed9-8233-61fb4a86ee62",
"name": "代码",
"type": "n8n-nodes-base.code",
"position": [
-280,
380
],
"parameters": {
"jsCode": "let output = [];\n\nfor (const item of $input.first().json.body.message.attachments) {\n output.push({\n json: {\n url: item.url\n }\n });\n}\n\nreturn output;"
},
"typeVersion": 2
},
{
"id": "4bd4284d-fafe-4aca-976e-c822a8170823",
"name": "AI Agent1",
"type": "@n8n/n8n-nodes-langchain.agent",
"position": [
600,
780
],
"parameters": {
"text": "={{ $json.data.toJsonString() }}",
"options": {
"systemMessage": "Summarize these messages and give the user a report that will be send in an iMessage. Do not say \"here's the summary\" or anything like that. Just respond with the summary by itself."
},
"promptType": "define"
},
"typeVersion": 2
},
{
"id": "274b2815-92bf-4a8a-bcd6-98fdb977dfa0",
"name": "聚合",
"type": "n8n-nodes-base.aggregate",
"position": [
260,
780
],
"parameters": {
"options": {},
"aggregate": "aggregateAllItemData"
},
"typeVersion": 1
},
{
"id": "ddc20f94-42a0-4227-ad11-afb0feb34db5",
"name": "OpenAI 聊天模型1",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
620,
940
],
"parameters": {
"model": {
"__rl": true,
"mode": "list",
"value": "gpt-4.1-mini"
},
"options": {}
},
"credentials": {
"openAiApi": {
"id": "JrqIdyKAvwxNgaEM",
"name": "Tay - SLUG"
}
},
"typeVersion": 1.2
},
{
"id": "21264d57-60f5-4594-b450-07662078b23e",
"name": "不要回应自己",
"type": "n8n-nodes-base.if",
"position": [
-960,
760
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "cecd3adf-a9e5-41d3-87ae-4a9699bd641b",
"operator": {
"type": "boolean",
"operation": "false",
"singleValue": true
},
"leftValue": "={{ $json.body.message.selfMessage }}",
"rightValue": ""
}
]
}
},
"typeVersion": 2.2
},
{
"id": "a098d03a-a4af-4b9a-aac2-5f5b57fd30e0",
"name": "便签 3",
"type": "n8n-nodes-base.stickyNote",
"position": [
-360,
260
],
"parameters": {
"color": 4,
"width": 980,
"height": 400,
"content": "## 图像下载器"
},
"typeVersion": 1
},
{
"id": "4a009bbd-4457-4bc9-8a03-9de40736f931",
"name": "便签 4",
"type": "n8n-nodes-base.stickyNote",
"position": [
-2000,
-700
],
"parameters": {
"width": 760,
"height": 1040,
"content": "## 🚀 从这里开始：Blooio 营养追踪器设置"
},
"typeVersion": 1
},
{
"id": "eb88206b-19c3-41cb-a409-2b924c780852",
"name": "便签 5",
"type": "n8n-nodes-base.stickyNote",
"position": [
-1220,
-700
],
"parameters": {
"width": 680,
"height": 1040,
"content": ""
},
"typeVersion": 1
}
],
"pinData": {
"Receive Message (From Blooio)": [
{
"body": {
"type": "new-message",
"message": {
"readAt": null,
"sender": "+11111111111",
"sentAt": 1751234680604,
"content": "And a Diet Coke",
"delivered": true,
"messageId": "6409C11D-9C0B-404B-B2E3-052DA7C14D07",
"technology": "iMessage",
"attachments": [
{
"id": "E843680B-8F00-460C-A0AA-34B1B1DD9624",
"url": "https://bucket.blooio.com/custom-webhook-attachments/R3ZJISuC-t9CssQNM3i2J.jpeg",
"size": 979912,
"filename": "Pasta.jpeg",
"mimeType": "image/jpeg",
"expiresAt": "2025-07-29T22:04:42.432Z",
"expiresAtUnix": 1753826682432
}
],
"deliveredAt": null,
"selfMessage": false,
"conversation": {
"id": "iMessage;-;+11111111111",
"name": null,
"recipient": "+11111111111"
}
}
},
"query": {},
"params": {},
"headers": {
"host": "workflows.xx.com",
"cf-ray": "9578b8a804fa2f17-LAX",
"cdn-loop": "cloudflare; loops=1; subreqs=1",
"cf-ew-via": "15",
"cf-worker": "blooio.com",
"cf-visitor": "{\"scheme\":\"https\"}",
"cf-ipcountry": "US",
"content-type": "application/json",
"content-length": "622",
"accept-encoding": "gzip, br",
"x-forwarded-for": "162.158.91.171",
"cf-connecting-ip": "2a06:98c0:3600::103",
"x-forwarded-host": "workflows.xx.com",
"x-forwarded-proto": "https"
},
"webhookUrl": "https://workflows.xx.com/webhook/receive-event",
"executionMode": "production"
}
]
},
"connections": {
"Code": {
"main": [
[
{
"node": "Loop Over Items",
"type": "main",
"index": 0
}
]
]
},
"AI Agent": {
"main": [
[
{
"node": "Aggregate",
"type": "main",
"index": 0
}
]
]
},
"AI Agent1": {
"main": [
[
{
"node": "Send Message",
"type": "main",
"index": 0
}
]
]
},
"Aggregate": {
"main": [
[
{
"node": "AI Agent1",
"type": "main",
"index": 0
}
]
]
},
"HTTP Request": {
"main": [
[
{
"node": "Loop Over Items",
"type": "main",
"index": 0
}
]
]
},
"Loop Over Items": {
"main": [
[
{
"node": "AI Agent",
"type": "main",
"index": 0
}
],
[
{
"node": "HTTP Request",
"type": "main",
"index": 0
}
]
]
},
"OpenAI Chat Model": {
"ai_languageModel": [
[
{
"node": "AI Agent",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"OpenAI Chat Model1": {
"ai_languageModel": [
[
{
"node": "AI Agent1",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Postgres Chat Memory": {
"ai_memory": [
[
{
"node": "AI Agent",
"type": "ai_memory",
"index": 0
}
]
]
},
"Don't respond to yourself": {
"main": [
[
{
"node": "If has images, download them",
"type": "main",
"index": 0
}
]
]
},
"If has images, download them": {
"main": [
[
{
"node": "Code",
"type": "main",
"index": 0
}
],
[
{
"node": "AI Agent",
"type": "main",
"index": 0
}
]
]
},
"Receive Message (From Blooio)": {
"main": [
[
{
"node": "Don't respond to yourself",
"type": "main",
"index": 0
}
]
]
}
}
}常见问题
如何使用这个工作流？
复制上方的 JSON 配置代码，在您的 n8n 实例中创建新工作流并选择「从 JSON 导入」，粘贴配置后根据需要修改凭证设置即可。
这个工作流适合什么场景？
高级 - 个人效率, AI 聊天机器人
需要付费吗？
本工作流完全免费，您可以直接导入使用。但请注意，工作流中使用的第三方服务（如 OpenAI API）可能需要您自行付费。
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