The workflow JSON
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{
"nodes": [
{
"id": "4a82b490-3550-4700-8e9a-5ae1ef7c327f",
"name": "Schedule Trigger",
"type": "n8n-nodes-base.scheduleTrigger",
"position": [
-100,
600
],
"parameters": {
"rule": {
"interval": [
{
"field": "seconds",
"secondsInterval": 10
}
]
}
},
"typeVersion": 1.2
},
{
"id": "bfe180f2-329c-4d00-9d93-3a87d694cb4e",
"name": "Get Auth Token",
"type": "n8n-nodes-base.httpRequest",
"position": [
720,
1080
],
"parameters": {
"url": "https://webhook.site/token",
"method": "POST",
"options": {}
},
"typeVersion": 4.2
},
{
"id": "26089f68-9d3c-4abd-8541-1d63a8a303c1",
"name": "Unprocessed Requests",
"type": "n8n-nodes-base.code",
"position": [
1420,
680
],
"parameters": {
"jsCode": "let filter_method = \"POST\"\nlet last_processed = $json.value ? $json.value : 0\nlet data = $json.data\n\nfunction dateToTime(datetime){\n return new Date(datetime.replace(\" \", \"T\") + \"Z\").getTime()\n}\n\n//Convert datetimes to timestamps\ndata.forEach(datum=>{datum.created_at = dateToTime(datum.created_at)})\n\n//Filter all new POST requests\nreturn data.filter(datum=>!last_processed || datum.created_at > last_processed).filter(datum=>!filter_method || datum.method==filter_method)"
},
"typeVersion": 2
},
{
"id": "00a5c01c-0cc1-4a56-9b5b-b90cc778ee36",
"name": "Get Latest Requests",
"type": "n8n-nodes-base.httpRequest",
"position": [
1060,
800
],
"parameters": {
"url": "=https://webhook.site/token/{{ $json.value }}/requests",
"options": {}
},
"typeVersion": 4.2
},
{
"id": "42fbb0c3-34c9-4d97-8761-1b9c84c2f8f7",
"name": "POST to n8n",
"type": "n8n-nodes-base.httpRequest",
"position": [
2000,
680
],
"parameters": {
"url": "={{ $('Local Webhook Address').first().json.webhook }}",
"body": "={{ $('Unprocessed Requests').item.json.content }}",
"method": "POST",
"options": {},
"sendBody": true,
"contentType": "raw",
"rawContentType": "=application/json"
},
"typeVersion": 4.2
},
{
"id": "fd38a00e-2d7f-4621-8f18-47d1770ef3ac",
"name": "Merge",
"type": "n8n-nodes-base.merge",
"position": [
1220,
680
],
"parameters": {
"mode": "combine",
"options": {
"includeUnpaired": true
},
"combineBy": "combineByPosition"
},
"typeVersion": 3
},
{
"id": "ef347c09-9870-42db-9109-934277290e0b",
"name": "Local Webhook Address",
"type": "n8n-nodes-base.set",
"position": [
160,
700
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "3c53386d-23a8-4c8a-b5e9-dfbb755e2be1",
"name": "webhook",
"type": "string",
"value": "http://localhost:5678/webhook/66210723-bd48-473c-8f8d-73d39d5012db"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "89baa16d-4a06-4f98-9735-9cc9fda5ff09",
"name": "Latest Update Time",
"type": "n8n-nodes-base.code",
"position": [
1600,
680
],
"parameters": {
"jsCode": "var datetimes = $('Unprocessed Requests').all().map(x=>x.json.created_at)\nreturn {last_time: Math.max(...datetimes)}"
},
"typeVersion": 2
},
{
"id": "c826677d-317f-4ad4-959d-153862de4ff7",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
620,
980
],
"parameters": {
"width": 460.2964713549969,
"height": 288.34663983291097,
"content": "## 1. Retrieve existing or get new auth token for webhook.site"
},
"typeVersion": 1
},
{
"id": "f4bc9a8c-d9dc-4969-9251-ce892a5ed41e",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
1080,
517.8563272190441
],
"parameters": {
"width": 483.2839292355176,
"height": 384.1277143350834,
"content": "## 2. Check if any new requests to webhook that came later than the last checked request"
},
"typeVersion": 1
},
{
"id": "adaf19be-cb2f-4727-9881-1a3e4098c528",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
1608.5062710597388,
518.9281636095216
],
"parameters": {
"width": 395.16534069351894,
"height": 380.2964713549969,
"content": "## 3. Relay the request to the local n8n workflow set in *Local Webhook Address*"
},
"typeVersion": 1
},
{
"id": "4e7add8c-1e95-4ebb-b7c8-35cee3cdeed5",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
-760,
340
],
"parameters": {
"color": 4,
"width": 566.9804381508956,
"height": 859.1365566530386,
"content": "# Public Webhook Relay\n## How it Works\nUtilizes webhook.site to receive public webhook requests and relays them to your local n8n workflow\n\n## How to Use\n- To use with local key-value store:\n Go to settings > community nodes and enter ```@horka.tv/n8n-nodes-storage-kv``` to install the key-value store node\n- To use with a different storage method:\n Replace the four key-value nodes with a temporary storage option of your choice (Airtable, Notion, Firebase, etc). This is required to save data between runs.\n- Set **Schedule Trigger** with a polling interval (default is every 10 seconds).\n- Set your local workflow address in Local Webhook Address.\n\n## How to Test\n- Set the workflow to *Active*.\n- After workflow executes at least once, you can check the input to **Get Latest Requests** for your auth token.\n- Run this command: ```curl -X POST -H \"Content-Type: application/json\" -d '{\"foo\":\"bar\"}' https://webhook.site/[THE AUTH TOKEN YOU JUST GOT]```\n- Now check **Executions** and confirm that the workflow ran all the way to the end. Confirm in **Unprocessed Requests** that your data was retrieved (data[0].content should be equal to {\"foo\":\"bar\"})\n- Now check your other local workflow and confirm that it was triggered with the correct data packet ```{\"foo\":\"bar\"}```.\n- *You're done!*\n\n## Caveats\nAt present, the relay expects a POST with form/json data. If you wish to relay raw data or GET requests, please alter the **Unprocessed Requests** and **POST to n8n** nodes accordingly."
},
"typeVersion": 1
},
{
"id": "5d8db2a1-569e-47c0-99a1-d66cb8b86897",
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
"position": [
40,
608.688533362355
],
"parameters": {
"color": 3,
"width": 304.23688498154337,
"height": 264.4911255434983,
"content": "### 0. Set this to your local workflow address (Production URL or Test URL in your Workflow Trigger node)"
},
"typeVersion": 1
},
{
"id": "e728e8fe-1a7d-4f44-96b8-7344b70b0452",
"name": "Store Auth Token",
"type": "@horka.tv/n8n-nodes-storage-kv.keyValueStorage",
"position": [
880,
1080
],
"parameters": {
"key": "auth_token",
"value": "={{ $json.uuid }}",
"fileName": "savefile"
},
"typeVersion": 1
},
{
"id": "1c19ff08-d6ed-4874-9c1a-69e92b25138a",
"name": "Store Last Processed",
"type": "@horka.tv/n8n-nodes-storage-kv.keyValueStorage",
"position": [
1800,
680
],
"parameters": {
"key": "last_processed",
"value": "={{ $json.last_time }}",
"fileName": "savefile"
},
"typeVersion": 1
},
{
"id": "ea927186-6147-42c7-8873-029616bdbe6d",
"name": "Retrieve Auth Token",
"type": "@horka.tv/n8n-nodes-storage-kv.keyValueStorage",
"position": [
380,
860
],
"parameters": {
"key": "auth_token",
"fileName": "savefile",
"operation": "read"
},
"typeVersion": 1
},
{
"id": "f217889c-7104-4183-8adb-4459f6cdc3d6",
"name": "Retrieve Last Processed",
"type": "@horka.tv/n8n-nodes-storage-kv.keyValueStorage",
"position": [
680,
620
],
"parameters": {
"key": "last_processed",
"fileName": "savefile",
"operation": "read"
},
"typeVersion": 1
},
{
"id": "12293fc3-8964-40da-8326-85c36dade0df",
"name": "If Auth Token Exists",
"type": "n8n-nodes-base.if",
"position": [
580,
860
],
"parameters": {
"options": {},
"conditions": {
"options": {
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "4356f226-da36-418b-957d-880872ddc420",
"operator": {
"type": "string",
"operation": "exists",
"singleValue": true
},
"leftValue": "={{ $json.value }}",
"rightValue": ""
}
]
}
},
"typeVersion": 2.1
}
],
"connections": {
"Merge": {
"main": [
[
{
"node": "Unprocessed Requests",
"type": "main",
"index": 0
}
]
]
},
"Get Auth Token": {
"main": [
[
{
"node": "Store Auth Token",
"type": "main",
"index": 0
}
]
]
},
"Schedule Trigger": {
"main": [
[
{
"node": "Local Webhook Address",
"type": "main",
"index": 0
},
{
"node": "Retrieve Last Processed",
"type": "main",
"index": 0
}
]
]
},
"Store Auth Token": {
"main": [
[
{
"node": "Get Latest Requests",
"type": "main",
"index": 0
}
]
]
},
"Latest Update Time": {
"main": [
[
{
"node": "Store Last Processed",
"type": "main",
"index": 0
}
]
]
},
"Get Latest Requests": {
"main": [
[
{
"node": "Merge",
"type": "main",
"index": 1
}
]
]
},
"Retrieve Auth Token": {
"main": [
[
{
"node": "If Auth Token Exists",
"type": "main",
"index": 0
}
]
]
},
"If Auth Token Exists": {
"main": [
[
{
"node": "Get Latest Requests",
"type": "main",
"index": 0
}
],
[
{
"node": "Get Auth Token",
"type": "main",
"index": 0
}
]
]
},
"Store Last Processed": {
"main": [
[
{
"node": "POST to n8n",
"type": "main",
"index": 0
}
]
]
},
"Unprocessed Requests": {
"main": [
[
{
"node": "Latest Update Time",
"type": "main",
"index": 0
}
]
]
},
"Local Webhook Address": {
"main": [
[
{
"node": "Retrieve Auth Token",
"type": "main",
"index": 0
}
]
]
},
"Retrieve Last Processed": {
"main": [
[
{
"node": "Merge",
"type": "main",
"index": 0
}
]
]
}
}
}
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How this works
This workflow automates the periodic retrieval and processing of HTTP requests, ensuring you never miss critical data updates without constant manual checks. It's ideal for developers or teams managing APIs who need reliable scheduling for tasks like fetching unprocessed requests or syncing information from external sources. The key step involves the cron-based Schedule Trigger initiating the chain, which then uses httpRequest nodes to authenticate, pull the latest data, and post it seamlessly to n8n for further handling, with @horka integration adding custom processing logic.
Use this workflow when you require automated, time-based HTTP polling for routine data ingestion, such as daily API syncs or monitoring endpoints, to save hours of manual effort. Avoid it for real-time needs, where webhooks would be more efficient, or for one-off tasks better suited to manual triggers. Common variations include adjusting the cron schedule for hourly runs or adding error-handling branches for robust API interactions.
About this workflow
Http Schedule. Uses scheduleTrigger, httpRequest, stickyNote, @horka. Scheduled trigger; 18 nodes.
Source: https://github.com/Zie619/n8n-workflows — original creator credit. Request a take-down →
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