This workflow follows the HTTP Request → Postgres recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
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{
"name": "WF-7: Health Check",
"nodes": [
{
"id": "trigger",
"name": "Hourly Health Check",
"type": "n8n-nodes-base.scheduleTrigger",
"position": [
250,
300
],
"parameters": {
"rule": {
"interval": [
{
"field": "hours",
"hoursInterval": 1
}
]
}
}
},
{
"id": "check_api",
"name": "Check Data API",
"type": "n8n-nodes-base.httpRequest",
"position": [
450,
200
],
"parameters": {
"method": "GET",
"url": "http://data-api:8000/health",
"options": {
"timeout": 10000
}
}
},
{
"id": "check_neo4j",
"name": "Check Neo4j",
"type": "n8n-nodes-base.httpRequest",
"position": [
450,
400
],
"parameters": {
"method": "POST",
"url": "http://data-api:8000/mcp/call/get_graph_stats",
"body": {},
"options": {
"timeout": 10000
}
}
},
{
"id": "aggregate_status",
"name": "Aggregate Status",
"type": "n8n-nodes-base.function",
"position": [
650,
300
],
"parameters": {
"functionCode": "const apiStatus = $input.all()[0].json;\nconst neo4jStatus = $input.all()[1].json;\n\nconst allHealthy = apiStatus.status === 'healthy' && neo4jStatus;\n\nreturn [{\n json: {\n timestamp: new Date().toISOString(),\n overall: allHealthy ? 'healthy' : 'degraded',\n services: {\n data_api: apiStatus.status || 'unknown',\n neo4j: neo4jStatus ? 'healthy' : 'unhealthy',\n tools_available: apiStatus.tools_available || 0\n }\n }\n}];"
}
},
{
"id": "check_status",
"name": "Check Overall Status",
"type": "n8n-nodes-base.if",
"position": [
850,
300
],
"parameters": {
"conditions": {
"string": [
{
"value1": "={{ $json.overall }}",
"value2": "healthy",
"operation": "notEqual"
}
]
}
}
},
{
"id": "send_alert",
"name": "Send Health Alert",
"type": "n8n-nodes-base.slack",
"position": [
1050,
400
],
"parameters": {
"channel": "#system-alerts",
"text": "\u26a0\ufe0f System Health Alert: Status is {{ $json.overall }}\nData API: {{ $json.services.data_api }}\nNeo4j: {{ $json.services.neo4j }}\nTime: {{ $json.timestamp }}"
}
},
{
"id": "log_health",
"name": "Log Health Check",
"type": "n8n-nodes-base.postgres",
"position": [
1050,
200
],
"parameters": {
"operation": "executeQuery",
"query": "INSERT INTO health_checks (status, details, check_time) VALUES ($1, $2, NOW())",
"parameters": "={{ [$json.overall, JSON.stringify($json.services)] }}"
}
}
],
"connections": {
"Hourly Health Check": {
"main": [
[
{
"node": "Check Data API",
"type": "main",
"index": 0
}
],
[
{
"node": "Check Neo4j",
"type": "main",
"index": 0
}
]
]
},
"Check Data API": {
"main": [
[
{
"node": "Aggregate Status",
"type": "main",
"index": 0
}
]
]
},
"Check Neo4j": {
"main": [
[
{
"node": "Aggregate Status",
"type": "main",
"index": 0
}
]
]
},
"Aggregate Status": {
"main": [
[
{
"node": "Check Overall Status",
"type": "main",
"index": 0
}
]
]
},
"Check Overall Status": {
"main": [
[
{
"node": "Send Health Alert",
"type": "main",
"index": 0
}
],
[
{
"node": "Log Health Check",
"type": "main",
"index": 0
}
]
]
},
"Send Health Alert": {
"main": [
[
{
"node": "Log Health Check",
"type": "main",
"index": 0
}
]
]
}
},
"settings": {
"executionOrder": "v1"
},
"staticData": null,
"tags": [
"health",
"monitoring",
"system"
]
}
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About this workflow
WF-7: Health Check. Uses httpRequest, slack, postgres. Scheduled trigger; 7 nodes.
Source: https://github.com/123qsa/supply-chain-kg/blob/main/n8n-workflows/wf-7-health-check.json — original creator credit. Request a take-down →
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