The workflow JSON
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{
"name": "20 - TOOL - list_tasks",
"nodes": [
{
"parameters": {
"content": "## Read-only task tool\nThe input schema is deliberately small and visible. This workflow reads only the local `tasks` Data Table, returns only known task fields, and writes an audit record for success or failure.\n\nAllowed filters:\n- status: `all`, `backlog`, `todo`, `in_progress`, `blocked`, `done`\n- priority: `all`, `low`, `medium`, `high`",
"height": 320,
"width": 560,
"color": 4
},
"type": "n8n-nodes-base.stickyNote",
"typeVersion": 1,
"position": [
-650,
-310
],
"id": "41000000-0000-4000-8000-000000000001",
"name": "Read tool explanation"
},
{
"parameters": {
"inputSource": "workflowInputs",
"workflowInputs": {
"values": [
{
"name": "sessionId",
"type": "string"
},
{
"name": "status",
"type": "string"
},
{
"name": "priority",
"type": "string"
}
]
}
},
"type": "n8n-nodes-base.executeWorkflowTrigger",
"typeVersion": 1.2,
"position": [
-520,
80
],
"id": "41000000-0000-4000-8000-000000000002",
"name": "Tool Input"
},
{
"parameters": {
"mode": "runOnceForEachItem",
"language": "javaScript",
"jsCode": "const sessionId = typeof $json.sessionId === 'string' ? $json.sessionId.trim() : '';\nconst status = typeof $json.status === 'string' && $json.status.trim() !== ''\n ? $json.status.trim().toLowerCase()\n : 'all';\nconst priority = typeof $json.priority === 'string' && $json.priority.trim() !== ''\n ? $json.priority.trim().toLowerCase()\n : 'all';\nconst proposedInput = { sessionId, status, priority };\nconst uuidPattern = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;\nconst statuses = ['all', 'backlog', 'todo', 'in_progress', 'blocked', 'done'];\nconst priorities = ['all', 'low', 'medium', 'high'];\nlet error = null;\n\nif (!uuidPattern.test(sessionId)) {\n error = { code: 'INVALID_SESSION', message: 'The task request needs a valid conversation session.' };\n} else if (!statuses.includes(status)) {\n error = { code: 'INVALID_STATUS', message: `Status must be one of: ${statuses.join(', ')}.` };\n} else if (!priorities.includes(priority)) {\n error = { code: 'INVALID_PRIORITY', message: `Priority must be one of: ${priorities.join(', ')}.` };\n}\n\nreturn {\n json: {\n valid: error === null,\n sessionId,\n status,\n priority,\n proposedInput,\n ...(error ? { response: { ok: false, error } } : {})\n }\n};"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
-280,
80
],
"id": "41000000-0000-4000-8000-000000000003",
"name": "Validate List Input"
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 3
},
"conditions": [
{
"id": "41000000-0000-4000-8000-000000000004",
"leftValue": "={{ $json.valid }}",
"rightValue": "",
"operator": {
"type": "boolean",
"operation": "true",
"singleValue": true
}
}
],
"combinator": "and"
},
"options": {}
},
"type": "n8n-nodes-base.if",
"typeVersion": 2.2,
"position": [
-40,
80
],
"id": "41000000-0000-4000-8000-000000000005",
"name": "Input Is Valid?"
},
{
"parameters": {
"resource": "row",
"operation": "get",
"dataTableId": {
"__rl": true,
"value": "tasks",
"mode": "name"
},
"matchType": "allConditions",
"filters": {
"conditions": []
},
"returnAll": false,
"limit": 100,
"orderBy": true,
"orderByColumn": "createdAt",
"orderByDirection": "ASC"
},
"type": "n8n-nodes-base.dataTable",
"typeVersion": 1.1,
"position": [
220,
0
],
"id": "41000000-0000-4000-8000-000000000006",
"name": "Read Tasks",
"alwaysOutputData": true,
"onError": "continueRegularOutput"
},
{
"parameters": {
"mode": "runOnceForAllItems",
"language": "javaScript",
"jsCode": "const input = $('Validate List Input').first().json;\nconst rows = $input.all().map((item) => item.json);\nconst dataError = rows.find((row) => typeof row.error === 'string' && row.error !== '');\n\nif (dataError) {\n return [{\n json: {\n ...input,\n response: {\n ok: false,\n error: {\n code: 'TASK_DATA_UNAVAILABLE',\n message: 'Local task data is not ready. Run 10 - SETUP - Local Task Data, then try again.'\n }\n }\n }\n }];\n}\n\nconst statusOrder = { in_progress: 0, blocked: 1, todo: 2, backlog: 3, done: 4 };\nconst priorityOrder = { high: 0, medium: 1, low: 2 };\nconst tasks = rows\n .filter((row) => Number.isInteger(row.id))\n .filter((row) => input.status === 'all' || row.status === input.status)\n .filter((row) => input.priority === 'all' || row.priority === input.priority)\n .map((row) => ({\n id: row.id,\n title: String(row.title ?? ''),\n description: String(row.description ?? ''),\n status: String(row.status ?? ''),\n priority: String(row.priority ?? ''),\n dueDate: row.dueDate ?? null,\n createdAt: row.createdAt,\n updatedAt: row.updatedAt\n }))\n .sort((a, b) =>\n (statusOrder[a.status] ?? 99) - (statusOrder[b.status] ?? 99) ||\n (priorityOrder[a.priority] ?? 99) - (priorityOrder[b.priority] ?? 99) ||\n a.id - b.id\n );\n\nreturn [{\n json: {\n ...input,\n response: {\n ok: true,\n filters: { status: input.status, priority: input.priority },\n count: tasks.length,\n tasks\n }\n }\n}];"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
480,
0
],
"id": "41000000-0000-4000-8000-000000000007",
"name": "Shape List Result"
},
{
"parameters": {
"mode": "runOnceForEachItem",
"language": "javaScript",
"jsCode": "const response = $json.response;\nconst error = response?.ok === false ? String(response.error?.message ?? 'Tool failed') : '';\nreturn {\n json: {\n occurredAt: new Date().toISOString(),\n sessionId: String($json.sessionId ?? ''),\n requestId: '',\n toolName: 'list_tasks',\n proposedInput: JSON.stringify($json.proposedInput ?? {}),\n result: JSON.stringify(response),\n error,\n response\n }\n};"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
740,
80
],
"id": "41000000-0000-4000-8000-000000000008",
"name": "Prepare Audit"
},
{
"parameters": {
"resource": "row",
"operation": "insert",
"dataTableId": {
"__rl": true,
"value": "tool_audit",
"mode": "name"
},
"columns": {
"mappingMode": "defineBelow",
"value": {
"occurredAt": "={{ $json.occurredAt }}",
"sessionId": "={{ $json.sessionId }}",
"requestId": "={{ $json.requestId }}",
"toolName": "={{ $json.toolName }}",
"proposedInput": "={{ $json.proposedInput }}",
"result": "={{ $json.result }}",
"error": "={{ $json.error }}"
},
"matchingColumns": [],
"schema": [
{
"id": "occurredAt",
"displayName": "occurredAt",
"required": false,
"defaultMatch": false,
"display": true,
"canBeUsedToMatch": true,
"type": "date"
},
{
"id": "sessionId",
"displayName": "sessionId",
"required": false,
"defaultMatch": false,
"display": true,
"canBeUsedToMatch": true,
"type": "string"
},
{
"id": "requestId",
"displayName": "requestId",
"required": false,
"defaultMatch": false,
"display": true,
"canBeUsedToMatch": true,
"type": "string"
},
{
"id": "toolName",
"displayName": "toolName",
"required": false,
"defaultMatch": false,
"display": true,
"canBeUsedToMatch": true,
"type": "string"
},
{
"id": "proposedInput",
"displayName": "proposedInput",
"required": false,
"defaultMatch": false,
"display": true,
"canBeUsedToMatch": true,
"type": "string"
},
{
"id": "result",
"displayName": "result",
"required": false,
"defaultMatch": false,
"display": true,
"canBeUsedToMatch": true,
"type": "string"
},
{
"id": "error",
"displayName": "error",
"required": false,
"defaultMatch": false,
"display": true,
"canBeUsedToMatch": true,
"type": "string"
}
],
"attemptToConvertTypes": false,
"convertFieldsToString": false
},
"options": {}
},
"type": "n8n-nodes-base.dataTable",
"typeVersion": 1.1,
"position": [
1000,
80
],
"id": "41000000-0000-4000-8000-000000000009",
"name": "Write Tool Audit",
"onError": "continueRegularOutput"
},
{
"parameters": {
"mode": "runOnceForEachItem",
"language": "javaScript",
"jsCode": "const prepared = $('Prepare Audit').item.json;\nconst response = { ...prepared.response };\nif (!Number.isInteger($json.id)) {\n response.auditWarning = 'The tool result could not be written to the local audit table.';\n}\nreturn { json: response };"
},
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1260,
80
],
"id": "41000000-0000-4000-8000-000000000010",
"name": "Return Tool Result"
}
],
"connections": {
"Tool Input": {
"main": [
[
{
"node": "Validate List Input",
"type": "main",
"index": 0
}
]
]
},
"Validate List Input": {
"main": [
[
{
"node": "Input Is Valid?",
"type": "main",
"index": 0
}
]
]
},
"Input Is Valid?": {
"main": [
[
{
"node": "Read Tasks",
"type": "main",
"index": 0
}
],
[
{
"node": "Prepare Audit",
"type": "main",
"index": 0
}
]
]
},
"Read Tasks": {
"main": [
[
{
"node": "Shape List Result",
"type": "main",
"index": 0
}
]
]
},
"Shape List Result": {
"main": [
[
{
"node": "Prepare Audit",
"type": "main",
"index": 0
}
]
]
},
"Prepare Audit": {
"main": [
[
{
"node": "Write Tool Audit",
"type": "main",
"index": 0
}
]
]
},
"Write Tool Audit": {
"main": [
[
{
"node": "Return Tool Result",
"type": "main",
"index": 0
}
]
]
}
},
"active": false,
"settings": {
"executionOrder": "v1",
"executionTimeout": 20,
"saveDataErrorExecution": "all",
"saveDataSuccessExecution": "all",
"saveManualExecutions": true
},
"versionId": "41000000-0000-4000-8000-000000000099",
"meta": {
"phase": 4,
"testedWithN8n": "2.30.5",
"toolRisk": "read"
},
"id": "phase4ListTasks",
"tags": []
}
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About this workflow
20 - TOOL - list_tasks. Uses executeWorkflowTrigger, dataTable. Event-driven trigger; 9 nodes.
Source: https://github.com/drsamdonegan/ai-solopreneur/blob/main/n8n/workflows/20-tool-list-tasks.json — original creator credit. Request a take-down →
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