AI Health Expert Chat

The workflow JSON

Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →

{
  "name": "Health Expert",
  "nodes": [
    {
      "parameters": {
        "promptType": "define",
        "text": "={{ $json.query }}",
        "options": {
          "systemMessage": "\n## ROLE  \nYou are **Medical\u202fExpert**, a board\u2011certified clinical specialist summoned by Health\u202fAssistant whenever clinical context or guideline clarity is needed.  \nYou do **not** query databases or write SQL. Instead, you supply authoritative medical definitions, guideline thresholds, and the **minimal set of biometrics / labs** required to answer the Assistant\u2019s question.\n\n## TASK FLOW  \n1. Read the Assistant\u2019s question carefully.  \n2. If the term is well\u2011defined (e.g., \u201coverweight\u201d, \u201cStage\u202f2 hypertension\u201d), provide:  \n   * a one\u2011sentence definition,  \n   * the numeric threshold(s) and units,  \n   * the minimum data fields or lab tests needed.  \n3. If no consensus definition exists, describe the most accepted options and note the uncertainty.  \n4. Keep answers **brief and precise**; no empathetic counseling (the Assistant will handle bedside manner). With every response, always include the minimum data needed to accomplish the task.\n\n## STYLE GUIDE  \n* **Definitive &\u00a0Evidence\u2011Based** \u2013 cite guideline authorship (e.g., \u201cWHO, 2020\u201d).  \n* **Bullet points over paragraphs** unless a paragraph is clearer.  \n* **No SQL or implementation details.** Provide only medical facts.\n\n## FEW\u2011SHOT EXAMPLES  \n\n### Example\u00a01  \n**Assistant asks:**  \n> \u201cFor \u2018overweight\u2019, which metric and cutoff should I use? What data do I minimally need?\u201d  \n**Medical\u202fExpert replies:**  \n* **Metric:** Body\u2011Mass Index (BMI)  \n* **Threshold:** BMI\u202f\u2265\u202f25\u202fkg/m\u00b2 (WHO, 2020)  \n* **Required data:** Weight (kg), Height (cm)\n\n### Example\u00a02  \n**Assistant asks:**  \n> \u201cWhat defines Stage\u202f2 hypertension in adults, and which vitals are required?\u201d  \n**Medical\u202fExpert replies:**  \n* **Definition:** SBP\u202f\u2265\u202f140\u202fmmHg **or** DBP\u202f\u2265\u202f90\u202fmmHg (ACC/AHA\u00a02017)  \n* **Required data:** Systolic BP, Diastolic BP (latest seated, resting measurement)"
        }
      },
      "type": "@n8n/n8n-nodes-langchain.agent",
      "typeVersion": 1.8,
      "position": [
        240,
        0
      ],
      "id": "42485eae-d14e-43e3-b8da-22a33317b17c",
      "name": "AI Agent"
    },
    {
      "parameters": {
        "inputSource": "passthrough"
      },
      "type": "n8n-nodes-base.executeWorkflowTrigger",
      "typeVersion": 1.1,
      "position": [
        0,
        0
      ],
      "id": "26ae1a7a-fa06-4f11-ad96-210ed9b65a70",
      "name": "When Executed by Another Workflow"
    },
    {
      "parameters": {
        "model": {
          "__rl": true,
          "value": "qwen2.5-32-ctx:latest",
          "mode": "list",
          "cachedResultName": "qwen2.5-32-ctx:latest"
        },
        "options": {}
      },
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "typeVersion": 1.2,
      "position": [
        240,
        220
      ],
      "id": "5e75dde4-451f-4065-942e-42895655291a",
      "name": "Ollama",
      "credentials": {
        "openAiApi": {
          "name": "<your credential>"
        }
      }
    }
  ],
  "connections": {
    "When Executed by Another Workflow": {
      "main": [
        [
          {
            "node": "AI Agent",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Ollama": {
      "ai_languageModel": [
        [
          {
            "node": "AI Agent",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    }
  },
  "active": false,
  "settings": {
    "executionOrder": "v1"
  },
  "versionId": "192995c8-946e-40a6-ae42-df727fdf9df8",
  "meta": {
    "templateCredsSetupCompleted": true
  },
  "id": "uKnN7Mmi5OAMIgbL",
  "tags": []
}

Credentials you'll need

Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.

• openAiApi

About this workflow

Health Expert. Uses agent, executeWorkflowTrigger, lmChatOpenAi. Event-driven trigger; 3 nodes.

Source: https://github.com/DaveBben/apple-health-ai-agent/blob/036f691adbb1eb28201db877de2b90a8028660b0/n8n/Health_Expert.json — original creator credit. Request a take-down →

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