Jay Hartley This workflow corresponds to n8n.io template #2443 — we link there as the canonical source.
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/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
}
]
}
},
"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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This template only works on n8n local instances!
Source: https://n8n.io/workflows/2443/ — original creator credit. Request a take-down →
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