The workflow JSON
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{
"name": "Error Handling",
"description": "Comprehensive error handling patterns for robust workflow execution",
"category": "advanced-patterns",
"difficulty": "advanced",
"estimatedTime": "20 minutes",
"prerequisites": [
"Advanced n8n knowledge",
"Error handling concepts"
],
"learningObjectives": [
"Master error handling techniques",
"Learn retry patterns",
"Practice graceful degradation"
],
"nodes": [
{
"parameters": {},
"id": "start",
"name": "Start",
"type": "n8n-nodes-base.start",
"typeVersion": 1,
"position": [
240,
300
]
},
{
"parameters": {
"assignments": [
{
"name": "apiEndpoints",
"value": "[\"https://jsonplaceholder.typicode.com/users\", \"https://httpstat.us/500\", \"https://api.github.com/users/octocat\", \"https://invalid-url-that-will-fail.com/api\"]"
}
]
},
"id": "set-test-endpoints",
"name": "Set Test Endpoints",
"type": "n8n-nodes-base.set",
"typeVersion": 1,
"position": [
460,
300
]
},
{
"parameters": {
"operation": "parse",
"jsonPath": "$json.apiEndpoints",
"includeItemIndex": true
},
"id": "split-endpoints",
"name": "Split Endpoints",
"type": "n8n-nodes-base.json",
"typeVersion": 1,
"position": [
680,
300
]
},
{
"parameters": {
"url": "{{ $json.data }}",
"method": "GET",
"options": {
"timeout": 5000,
"retry": {
"enabled": true,
"maxRetries": 3,
"retryDelay": 1000
}
}
},
"id": "api-request",
"name": "API Request",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 1,
"position": [
900,
300
],
"continueOnFail": true
},
{
"parameters": {
"conditions": [
{
"field": "error",
"operation": "exists",
"value": false
}
]
},
"id": "check-success",
"name": "Check Success",
"type": "n8n-nodes-base.switch",
"typeVersion": 1,
"position": [
1120,
300
]
},
{
"parameters": {
"assignments": [
{
"name": "status",
"value": "success"
},
{
"name": "endpoint",
"value": "{{ $node('Split Endpoints').json.data }}"
},
{
"name": "responseSize",
"value": "{{ length(JSON.stringify($json)) }}"
},
{
"name": "processedAt",
"value": "{{ formatDate(now(), 'yyyy-MM-dd HH:mm:ss') }}"
}
]
},
"id": "handle-success",
"name": "Handle Success",
"type": "n8n-nodes-base.set",
"typeVersion": 1,
"position": [
1340,
200
]
},
{
"parameters": {
"assignments": [
{
"name": "status",
"value": "error"
},
{
"name": "endpoint",
"value": "{{ $node('Split Endpoints').json.data }}"
},
{
"name": "errorType",
"value": "{{ $json.error ? $json.error.name : 'Unknown' }}"
},
{
"name": "errorMessage",
"value": "{{ $json.error ? $json.error.message : 'Request failed' }}"
},
{
"name": "httpStatus",
"value": "{{ $json.error && $json.error.httpCode ? $json.error.httpCode : 'N/A' }}"
},
{
"name": "failedAt",
"value": "{{ formatDate(now(), 'yyyy-MM-dd HH:mm:ss') }}"
},
{
"name": "retryable",
"value": "{{ $json.error && $json.error.httpCode && $json.error.httpCode >= 500 }}"
}
]
},
"id": "handle-error",
"name": "Handle Error",
"type": "n8n-nodes-base.set",
"typeVersion": 1,
"position": [
1340,
400
]
},
{
"parameters": {
"operation": "merge",
"mergeSources": [
"$node('Handle Success').json",
"$node('Handle Error').json"
]
},
"id": "merge-results",
"name": "Merge Results",
"type": "n8n-nodes-base.json",
"typeVersion": 1,
"position": [
1560,
300
]
},
{
"parameters": {
"assignments": [
{
"name": "summary",
"value": "{{ {totalRequests: length($input.all()), successCount: length($input.all().filter(item => item.status === 'success')), errorCount: length($input.all().filter(item => item.status === 'error')), retryableErrors: length($input.all().filter(item => item.retryable === true))} }}"
},
{
"name": "successRate",
"value": "{{ round((length($input.all().filter(item => item.status === 'success')) / length($input.all())) * 100, 2) }}"
},
{
"name": "reportGenerated",
"value": "{{ formatDate(now(), 'yyyy-MM-dd HH:mm:ss') }}"
}
]
},
"id": "generate-summary",
"name": "Generate Summary",
"type": "n8n-nodes-base.set",
"typeVersion": 1,
"position": [
1780,
300
]
}
],
"connections": {
"Start": {
"main": [
[
{
"node": "Set Test Endpoints",
"type": "main",
"index": 0
}
]
]
},
"Set Test Endpoints": {
"main": [
[
{
"node": "Split Endpoints",
"type": "main",
"index": 0
}
]
]
},
"Split Endpoints": {
"main": [
[
{
"node": "API Request",
"type": "main",
"index": 0
}
]
]
},
"API Request": {
"main": [
[
{
"node": "Check Success",
"type": "main",
"index": 0
}
]
]
},
"Check Success": {
"main": [
[
{
"node": "Handle Success",
"type": "main",
"index": 0
}
],
[
{
"node": "Handle Error",
"type": "main",
"index": 0
}
]
]
},
"Handle Success": {
"main": [
[
{
"node": "Merge Results",
"type": "main",
"index": 0
}
]
]
},
"Handle Error": {
"main": [
[
{
"node": "Merge Results",
"type": "main",
"index": 1
}
]
]
},
"Merge Results": {
"main": [
[
{
"node": "Generate Summary",
"type": "main",
"index": 0
}
]
]
}
},
"active": false,
"settings": {},
"versionId": "1"
}
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About this workflow
Error Handling. Uses start, json, httpRequest. Manual trigger; 9 nodes.
Source: https://github.com/neul-labs/m9m/blob/main/examples/advanced-patterns/error-handling.json — original creator credit. Request a take-down →
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