This workflow follows the Execute Workflow Trigger → HTTP Request recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"name": "InsightsLM - Extract Text",
"nodes": [
{
"parameters": {
"workflowInputs": {
"values": [
{
"name": "filePath"
}
]
}
},
"type": "n8n-nodes-base.executeWorkflowTrigger",
"typeVersion": 1.1,
"position": [
60,
180
],
"id": "92f1772c-8782-4c8d-9374-18b599a89655",
"name": "When Executed by Another Workflow"
},
{
"parameters": {
"method": "POST",
"url": "=https://yfvmutoxmibqzvyklggr.supabase.co/storage/v1/object/sign/sources/{{ $json.filePath }}",
"authentication": "predefinedCredentialType",
"nodeCredentialType": "supabaseApi",
"sendBody": true,
"specifyBody": "json",
"jsonBody": "{\n \"expiresIn\": 60\n}",
"options": {}
},
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
280,
180
],
"id": "eacc6b5c-ff5f-40c1-bfb2-4968317a1ecc",
"name": "Generate Signed URL",
"credentials": {
"supabaseApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"url": "=https://yfvmutoxmibqzvyklggr.supabase.co/storage/v1/{{ $json.signedURL }}",
"options": {
"response": {
"response": {
"fullResponse": true
}
}
}
},
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.2,
"position": [
500,
180
],
"id": "9c5245a7-cbe8-4217-902b-7f1c42bfc3e2",
"name": "Download File"
},
{
"parameters": {
"rules": {
"values": [
{
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 2
},
"conditions": [
{
"leftValue": "={{ $json.headers[\"content-type\"] }}",
"rightValue": "application/pdf",
"operator": {
"type": "string",
"operation": "equals"
},
"id": "dc0dbe8c-70d5-4127-95f8-0fbd3f1a6bad"
}
],
"combinator": "and"
}
},
{
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 2
},
"conditions": [
{
"id": "2307a9d5-7872-49dc-9aeb-60697b91dc84",
"leftValue": "={{ $json.headers[\"content-type\"] }}",
"rightValue": "audio/mpeg",
"operator": {
"type": "string",
"operation": "equals",
"name": "filter.operator.equals"
}
}
],
"combinator": "and"
}
},
{
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict",
"version": 2
},
"conditions": [
{
"id": "87532eb7-b821-4d84-9d8e-c17136b0a88a",
"leftValue": "={{ $json.headers[\"content-type\"] }}",
"rightValue": "text/plain",
"operator": {
"type": "string",
"operation": "equals",
"name": "filter.operator.equals"
}
}
],
"combinator": "and"
}
}
]
},
"options": {}
},
"type": "n8n-nodes-base.switch",
"typeVersion": 3.2,
"position": [
720,
180
],
"id": "b9643850-737a-405f-9ff0-1903d9424cd1",
"name": "Switch"
},
{
"parameters": {
"operation": "pdf",
"options": {}
},
"type": "n8n-nodes-base.extractFromFile",
"typeVersion": 1,
"position": [
940,
-20
],
"id": "ceeb5000-0dbc-4d18-9a29-7bc2c83ff959",
"name": "Extract from File"
},
{
"parameters": {
"resource": "audio",
"operation": "transcribe",
"options": {}
},
"type": "@n8n/n8n-nodes-langchain.openAi",
"typeVersion": 1.8,
"position": [
940,
180
],
"id": "e8c24cd1-0d5e-452e-97ef-cb997a9c603e",
"name": "OpenAI",
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"assignments": {
"assignments": [
{
"id": "1f5bee5d-939c-4df3-8e7d-0696ac3aa702",
"name": "text",
"value": "={{ $('Download File').item.json.data }}",
"type": "string"
}
]
},
"options": {}
},
"type": "n8n-nodes-base.set",
"typeVersion": 3.4,
"position": [
940,
380
],
"id": "45462a2a-a13e-45c0-8857-21f924c721ea",
"name": "Edit Fields1"
},
{
"parameters": {
"assignments": {
"assignments": [
{
"id": "9fea51c0-b3a9-49b5-8608-3264c9d00304",
"name": "extracted_text",
"value": "={{ $json.text }}",
"type": "string"
}
]
},
"options": {}
},
"type": "n8n-nodes-base.set",
"typeVersion": 3.4,
"position": [
1160,
180
],
"id": "83cae3e9-ba19-4cdd-ac7e-0d4b4515eaad",
"name": "Extracted Text"
},
{
"parameters": {
"content": "## To Do \n- Configure the Supabase nodes to reference your Project\n- Update the Host of the \"HTTP Requests\" to hit your project\n- Setup OpenAI credentials",
"width": 680,
"color": 4
},
"type": "n8n-nodes-base.stickyNote",
"typeVersion": 1,
"position": [
1420,
100
],
"id": "a550ac25-8226-46af-8c55-5f42f1abd0e9",
"name": "Sticky Note"
},
{
"parameters": {
"content": "[](https://www.theaiautomators.com/)\n## InsightsLM\nhttps://github.com/theaiautomators/insights-lm-public",
"height": 220,
"width": 280,
"color": 7
},
"type": "n8n-nodes-base.stickyNote",
"typeVersion": 1,
"position": [
60,
-200
],
"id": "3f1e49b6-b7b4-49d0-a2e7-c50ab1cd8f3d",
"name": "Sticky Note8"
}
],
"connections": {
"Generate Signed URL": {
"main": [
[
{
"node": "Download File",
"type": "main",
"index": 0
}
]
]
},
"Download File": {
"main": [
[
{
"node": "Switch",
"type": "main",
"index": 0
}
]
]
},
"Switch": {
"main": [
[
{
"node": "Extract from File",
"type": "main",
"index": 0
}
],
[
{
"node": "OpenAI",
"type": "main",
"index": 0
}
],
[
{
"node": "Edit Fields1",
"type": "main",
"index": 0
}
]
]
},
"When Executed by Another Workflow": {
"main": [
[
{
"node": "Generate Signed URL",
"type": "main",
"index": 0
}
]
]
},
"Extract from File": {
"main": [
[
{
"node": "Extracted Text",
"type": "main",
"index": 0
}
]
]
},
"OpenAI": {
"main": [
[
{
"node": "Extracted Text",
"type": "main",
"index": 0
}
]
]
},
"Edit Fields1": {
"main": [
[
{
"node": "Extracted Text",
"type": "main",
"index": 0
}
]
]
}
},
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "28c069b3-6e86-4169-82b3-50bcfad834f7",
"id": "AzZ5a2zCGU1O3MRV",
"tags": []
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
openAiApisupabaseApi
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About this workflow
InsightsLM - Extract Text. Uses executeWorkflowTrigger, httpRequest, openAi. Event-driven trigger; 10 nodes.
Source: https://github.com/arnikanord/Notebook-LM-clone/blob/main/n8n/InsightsLM___Extract_Text.json — original creator credit. Request a take-down →
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