n8n Team This workflow corresponds to n8n.io template #4108 — we link there as the canonical source.
This workflow follows the HTTP Request → OpenAI Chat 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 →
{
"nodes": [
{
"id": "c5b7bac5-6e31-4338-af76-32a34be8ae4d",
"name": "Webhook",
"type": "n8n-nodes-base.webhook",
"position": [
-440,
280
],
"parameters": {
"path": "ai_text_to_image_generator",
"options": {},
"httpMethod": "POST",
"responseMode": "responseNode"
},
"typeVersion": 2
},
{
"id": "ba2850cc-3d2b-45d7-9c1d-87bff38d99c3",
"name": "Fetch Status",
"type": "n8n-nodes-base.httpRequest",
"position": [
300,
280
],
"parameters": {
"url": "=https://queue.fal.run/fal-ai/flux/requests/{{ $json.request_id }}/status",
"options": {},
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth"
},
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
},
"typeVersion": 4.2
},
{
"id": "44e08f96-e6b2-49a8-8077-571e07108d8d",
"name": "Wait",
"type": "n8n-nodes-base.wait",
"position": [
680,
460
],
"parameters": {
"amount": 1
},
"typeVersion": 1.1
},
{
"id": "a1455b63-eed2-4c6d-86dc-11bf0937892b",
"name": "Is Ready?",
"type": "n8n-nodes-base.if",
"position": [
480,
280
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "ac50759b-e2f3-4efd-a2af-f28b7d209b45",
"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.status }}",
"rightValue": "COMPLETED"
}
]
}
},
"typeVersion": 2.2
},
{
"id": "6b4446ef-0c5f-4d8b-839e-e7a9d6ae4773",
"name": "Submit Request",
"type": "n8n-nodes-base.httpRequest",
"position": [
100,
280
],
"parameters": {
"url": "https://queue.fal.run/fal-ai/flux/schnell",
"method": "POST",
"options": {},
"jsonBody": "={\"prompt\": \"{{ $json.body.prompt }}\"}",
"sendBody": true,
"sendHeaders": true,
"specifyBody": "json",
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth",
"headerParameters": {
"parameters": [
{
"name": "Content-Type",
"value": "application/json"
}
]
}
},
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
},
"typeVersion": 4.2
},
{
"id": "3f1df77f-8576-4c32-a1c8-7e80f5bf572d",
"name": "Fetch Result",
"type": "n8n-nodes-base.httpRequest",
"position": [
680,
280
],
"parameters": {
"url": "={{ $json.response_url }}",
"options": {},
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth"
},
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
},
"typeVersion": 4.2
},
{
"id": "744b0b05-d1f7-4972-b16d-70328b7a36c9",
"name": "OpenAI Chat Model",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
-260,
440
],
"parameters": {
"options": {}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.1
},
{
"id": "9ab24ceb-c1c1-42b8-88d9-249c2db60a8d",
"name": "400 Error",
"type": "n8n-nodes-base.respondToWebhook",
"position": [
100,
640
],
"parameters": {
"options": {
"responseCode": 400
},
"respondWith": "json",
"responseBody": "={{\n{\n \"error\": \"Prompt is in violation of terms of use. Please try again.\",\n \"result\": []\n}\n}}"
},
"typeVersion": 1.1
},
{
"id": "c5ef424e-1fb5-44d5-9612-4c76c7d1d232",
"name": "Success",
"type": "n8n-nodes-base.respondToWebhook",
"position": [
900,
280
],
"parameters": {
"options": {},
"respondWith": "json",
"responseBody": "={{\n{\n \"error\": null,\n \"result\": $json.images\n}\n}}"
},
"typeVersion": 1.1
},
{
"id": "eb43cc4a-4d15-47b9-9c81-840ecc9cfafa",
"name": "Content Safety Filter",
"type": "@n8n/n8n-nodes-langchain.textClassifier",
"position": [
-260,
280
],
"parameters": {
"options": {
"fallback": "other"
},
"inputText": "={{ $json.body.prompt }}",
"categories": {
"categories": [
{
"category": "Content Safety",
"description": "text is not appropriate"
},
{
"category": "SFW",
"description": "text is SFW"
}
]
}
},
"typeVersion": 1
},
{
"id": "db102cc6-b414-4187-b269-8f73158f0fb3",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-480,
120
],
"parameters": {
"width": 540,
"height": 460,
"content": "## Receives text prompt through a webhook endpoint and filters the prompt for inappropriate content using AI moderation"
},
"typeVersion": 1
},
{
"id": "b2ff86e9-62cc-45d1-9f89-6a5d2010c976",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
80,
0
],
"parameters": {
"width": 540,
"height": 580,
"content": "## Submits valid prompts to the Fal.ai and polls for completion status and retrieves the generated image when ready\n\nFal.ai is a model inference and finetuning service dedicated to AI image and video. It hosts many popular third party models including Flux by Black Forest Labs.\n\nSign up here - https://fal.ai - for an api key."
},
"typeVersion": 1
}
],
"connections": {
"Wait": {
"main": [
[
{
"node": "Fetch Status",
"type": "main",
"index": 0
}
]
]
},
"Webhook": {
"main": [
[
{
"node": "Content Safety Filter",
"type": "main",
"index": 0
}
]
]
},
"Is Ready?": {
"main": [
[
{
"node": "Fetch Result",
"type": "main",
"index": 0
}
],
[
{
"node": "Wait",
"type": "main",
"index": 0
}
]
]
},
"Fetch Result": {
"main": [
[
{
"node": "Success",
"type": "main",
"index": 0
}
]
]
},
"Fetch Status": {
"main": [
[
{
"node": "Is Ready?",
"type": "main",
"index": 0
}
]
]
},
"Submit Request": {
"main": [
[
{
"node": "Fetch Status",
"type": "main",
"index": 0
}
]
]
},
"OpenAI Chat Model": {
"ai_languageModel": [
[
{
"node": "Content Safety Filter",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Content Safety Filter": {
"main": [
[
{
"node": "400 Error",
"type": "main",
"index": 0
}
],
[
{
"node": "Submit Request",
"type": "main",
"index": 0
}
],
[
{
"node": "400 Error",
"type": "main",
"index": 0
}
]
]
}
}
}
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.
httpHeaderAuthopenAiApi
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About this workflow
This template is for developers, content creators, or application builders who want to integrate an AI-powered text-to-image generation service into their applications or systems via an API endpoint.
Source: https://n8n.io/workflows/4108/ — original creator credit. Request a take-down →
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