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{
"name": "WF-900 Error Handler Canonical",
"description": "Normalizes runtime failures, writes error events, and directs replay or remediation.",
"nodes": [
{
"parameters": {},
"id": "wf900_trigger_node",
"name": "Trigger Node",
"type": "n8n-nodes-base.errorTrigger",
"typeVersion": 1,
"position": [
200,
300
]
},
{
"parameters": {
"jsCode": "return [{ json: { ...$json, error_context: { error_received_at: new Date().toISOString(), dossier_id: $json.dossier_id || 'DOSSIER-UNSPECIFIED', source_workflow: $json.source_workflow || 'UNKNOWN' } } }];"
},
"id": "wf900_error_load_node",
"name": "Error Load Node",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
420,
300
]
},
{
"parameters": {
"jsCode": "return [{ json: { ...$json, registry_lookup: { error_registry: 'registries/error_registry.yaml', workflow_registry: 'registries/workflow_registry.yaml', route_registry: 'registries/route_registry.yaml' } } }];"
},
"id": "wf900_registry_lookup_node",
"name": "Registry Lookup Node",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
640,
300
]
},
{
"parameters": {
"jsCode": "const sourceWorkflow = $json.source_workflow || 'UNKNOWN';\nconst errorMessage = $json.error_message || 'Unspecified error';\nconst errorFamily = $json.error_family || 'SE-P1-001';\nconst errorMapping = {\n 'SE-P1-001': { category: 'intake_error', replayable: false, manualReviewRequired: true, retryAllowed: false, suggestedTarget: 'WF-010' },\n 'SE-P1-002': { category: 'health_check_error', replayable: false, manualReviewRequired: true, retryAllowed: false, suggestedTarget: 'WF-000' },\n 'SE-P1-003': { category: 'orchestration_error', replayable: true, manualReviewRequired: false, retryAllowed: true, suggestedTarget: 'WF-010' },\n 'DEFAULT': { category: 'unknown_error', replayable: false, manualReviewRequired: true, retryAllowed: false, suggestedTarget: 'WF-010' }\n};\nconst mappedError = errorMapping[errorFamily] || errorMapping['DEFAULT'];\nconst remediationTarget = $json.replay_target_workflow || mappedError.suggestedTarget;\nreturn [{\n json: {\n ...$json,\n error_resolution: {\n error_family: errorFamily,\n category: mappedError.category,\n is_replayable: mappedError.replayable,\n manual_review_required: mappedError.manualReviewRequired,\n retry_allowed: mappedError.retryAllowed,\n suggested_remediation_target: remediationTarget,\n remediation_timestamp: new Date().toISOString()\n }\n }\n}];"
},
"id": "wf900_error_classification_node",
"name": "Error Classification Node",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
860,
300
]
},
{
"parameters": {
"jsCode": "try {\n const resolution = $json.error_resolution;\n if (!resolution || !resolution.error_family) {\n throw new Error('missing error resolution fields');\n }\n return [{ json: { ...$json, validation_status: 'SUCCESS', route_to_error: false } }];\n} catch (error) {\n return [{ json: { ...$json, validation_status: 'FAILED', route_to_error: true, validation_error: String(error.message || error) } }];\n}"
},
"id": "wf900_resolution_validation_node",
"name": "Resolution Validation Node",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1080,
300
]
},
{
"parameters": {
"jsCode": "if ($json.route_to_error) return [];\nreturn [{\n json: {\n ...$json,\n se_error_events_write: {\n operation: 'create_error_event',\n error_id: 'ERR-' + Date.now(),\n dossier_id: $json.dossier_id,\n source_workflow: $json.source_workflow,\n error_family: $json.error_resolution.error_family,\n error_message: $json.error_message,\n error_category: $json.error_resolution.category,\n is_replayable: $json.error_resolution.is_replayable,\n manual_review_required: $json.error_resolution.manual_review_required,\n timestamp: new Date().toISOString(),\n writeback_target: 'se_error_events'\n }\n }\n}];"
},
"id": "wf900_error_events_write_node",
"name": "se_error_events Write Node",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1300,
200
]
},
{
"parameters": {
"jsCode": "if ($json.route_to_error) return [];\nif (!$json.error_resolution.is_replayable || $json.error_resolution.manual_review_required) return [];\nreturn [{\n json: {\n ...$json,\n replay_instruction: {\n operation: 'auto_replay',\n target_workflow: $json.error_resolution.suggested_remediation_target,\n replay_type: 'FROM_CHECKPOINT',\n dossier_id: $json.dossier_id,\n original_error_id: 'ERR-' + Date.now(),\n replay_timestamp: new Date().toISOString()\n }\n }\n}];"
},
"id": "wf900_auto_replay_node",
"name": "Auto-Replay Decision Node",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1520,
100
]
},
{
"parameters": {
"jsCode": "if ($json.route_to_error) return [];\nif ($json.error_resolution.is_replayable && !$json.error_resolution.manual_review_required) return [];\nreturn [{\n json: {\n ...$json,\n se_approval_queue_write: {\n operation: 'queue_for_approval',\n dossier_id: $json.dossier_id,\n approval_type: 'manual_error_review',\n error_family: $json.error_resolution.error_family,\n error_message: $json.error_message,\n suggested_target: $json.error_resolution.suggested_remediation_target,\n requires_founder_approval: $json.error_resolution.category === 'unknown_error',\n queued_at: new Date().toISOString(),\n writeback_target: 'se_approval_queue'\n }\n }\n}];"
},
"id": "wf900_approval_queue_write_node",
"name": "se_approval_queue Write Node",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1520,
320
]
},
{
"parameters": {
"jsCode": "if ($json.route_to_error) return [];\nconst replayInstruction = $json.replay_instruction || null;\nconst requiresApproval = $json.se_approval_queue_write || null;\nlet nextWorkflow = 'WF-010';\nlet decision = 'MANUAL_REVIEW_REQUIRED';\nif (replayInstruction && replayInstruction.operation === 'auto_replay') {\n nextWorkflow = replayInstruction.target_workflow;\n decision = 'AUTO_REPLAY_SCHEDULED';\n}\nif (requiresApproval) {\n nextWorkflow = 'WF-021';\n decision = 'AWAITING_APPROVAL';\n}\nreturn [{\n json: {\n ...$json,\n routing_decision: {\n next_workflow: nextWorkflow,\n decision: decision,\n wf900_bound: true\n }\n }\n}];"
},
"id": "wf900_routing_decision_node",
"name": "Routing Decision Node",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1740,
300
]
},
{
"parameters": {
"jsCode": "if (!$json.route_to_error) return [];\nreturn [{\n json: {\n workflow_id: 'WF-900',\n routing_decision: 'FATAL_ERROR',\n next_workflow: 'NONE',\n error_message: $json.validation_error || 'WF-900 internal error',\n manual_operator_review_required: true\n }\n}];"
},
"id": "wf900_fatal_error_node",
"name": "Fatal Error Handler Node",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1080,
500
]
},
{
"parameters": {
"jsCode": "return [{\n json: {\n workflow_id: 'WF-900',\n execution_status: 'COMPLETE',\n completion_packet: {\n instance_id: 'WF-900-COMP-' + Date.now(),\n artifact_family: 'error_resolution_packet',\n schema_version: '1.0.0',\n producer_workflow: 'WF-900',\n dossier_ref: $json.dossier_id,\n created_at: new Date().toISOString(),\n status: 'CREATED',\n payload: {\n error_family: $json.error_resolution?.error_family || 'UNKNOWN',\n resolution_type: $json.routing_decision?.decision || 'MANUAL_REVIEW_REQUIRED',\n next_workflow: $json.routing_decision?.next_workflow || 'WF-010',\n approval_required: $json.se_approval_queue_write ? true : false\n }\n }\n }\n}];"
},
"id": "wf900_completion_packet_emission_node",
"name": "Completion Packet Emission Node",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1960,
300
]
}
],
"connections": {
"Trigger Node": {
"main": [
[
{
"node": "Error Load Node",
"type": "main",
"index": 0
}
]
]
},
"Error Load Node": {
"main": [
[
{
"node": "Registry Lookup Node",
"type": "main",
"index": 0
}
]
]
},
"Registry Lookup Node": {
"main": [
[
{
"node": "Error Classification Node",
"type": "main",
"index": 0
}
]
]
},
"Error Classification Node": {
"main": [
[
{
"node": "Resolution Validation Node",
"type": "main",
"index": 0
}
]
]
},
"Resolution Validation Node": {
"main": [
[
{
"node": "se_error_events Write Node",
"type": "main",
"index": 0
}
],
[
{
"node": "Fatal Error Handler Node",
"type": "main",
"index": 0
}
]
]
},
"se_error_events Write Node": {
"main": [
[
{
"node": "Auto-Replay Decision Node",
"type": "main",
"index": 0
}
],
[
{
"node": "se_approval_queue Write Node",
"type": "main",
"index": 0
}
]
]
},
"Auto-Replay Decision Node": {
"main": [
[
{
"node": "Routing Decision Node",
"type": "main",
"index": 0
}
]
]
},
"se_approval_queue Write Node": {
"main": [
[
{
"node": "Routing Decision Node",
"type": "main",
"index": 0
}
]
]
},
"Routing Decision Node": {
"main": [
[
{
"node": "Completion Packet Emission Node",
"type": "main",
"index": 0
}
]
]
},
"Fatal Error Handler Node": {
"main": [
[]
]
},
"Completion Packet Emission Node": {
"main": [
[]
]
}
},
"meta": {
"workflow_id": "WF-900",
"phase": "phase1",
"vein": "error_vein",
"purpose": "Error handler and routing.",
"implementation_depth": "production_grade",
"owner_director": "narada",
"next_workflow": "WF-901",
"canonical_file": "n8n/workflows/WF-900.json",
"wf900_error_route": "WF-900"
},
"active": true
}
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About this workflow
WF-900 Error Handler Canonical. Uses errorTrigger. Event-driven trigger; 11 nodes.
Source: https://github.com/justkalpane/Shadow-Creator-OS-Phase_01/blob/0447c2f91c0b7669a61f768fac60fa911acf2cc5/n8n/workflows/WF-900.json — original creator credit. Request a take-down →
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