Davide Boizza This workflow corresponds to n8n.io template #10863 — we link there as the canonical source.
This workflow follows the Agent → Form 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 →
{
"id": "7O2maMFxskf4vIWu",
"meta": {
"templateCredsSetupCompleted": true
},
"name": "Fashion size estimator v2",
"tags": [],
"nodes": [
{
"id": "c0525703-797e-4706-a2bb-3df23b1420fa",
"name": "On form submission",
"type": "n8n-nodes-base.formTrigger",
"position": [
-368,
-496
],
"parameters": {
"options": {
"appendAttribution": false
},
"formTitle": "Fashion Size Estimator",
"formFields": {
"values": [
{
"fieldLabel": "Image",
"requiredField": true
}
]
},
"formDescription": "Insert the url of your image"
},
"typeVersion": 2.2
},
{
"id": "986178bc-7fb5-46d9-9f75-50bd98709a1d",
"name": "Get status",
"type": "n8n-nodes-base.httpRequest",
"position": [
400,
-496
],
"parameters": {
"url": "=https://queue.fal.run/easel-ai/fashion-size-estimator/requests/{{ $('Send image to estimator').item.json.request_id }}/status ",
"options": {},
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth"
},
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
},
"typeVersion": 4.2
},
{
"id": "93cb9833-b123-4a74-8315-9ec1a5e37b8b",
"name": "Completed?",
"type": "n8n-nodes-base.if",
"position": [
592,
-496
],
"parameters": {
"options": {},
"conditions": {
"options": {
"version": 2,
"leftValue": "",
"caseSensitive": true,
"typeValidation": "strict"
},
"combinator": "and",
"conditions": [
{
"id": "383d112e-2cc6-4dd4-8985-f09ce0bd1781",
"operator": {
"name": "filter.operator.equals",
"type": "string",
"operation": "equals"
},
"leftValue": "={{ $json.status }}",
"rightValue": "COMPLETED"
}
]
}
},
"typeVersion": 2.2
},
{
"id": "40f19156-1d95-45ce-86ea-cb47096fc4c3",
"name": "Form",
"type": "n8n-nodes-base.form",
"position": [
-64,
-16
],
"parameters": {
"options": {},
"operation": "completion",
"completionTitle": "Fashion size estimator",
"completionMessage": "=The result is:\n\nSize: {{ $json.size }}\nHeight: {{ $json.height }}\nBust: {{ $json.bust }}\nWaist: {{ $json.waist }}\nHip: {{ $json.hip }}"
},
"typeVersion": 1
},
{
"id": "1afcbceb-c947-4b1d-8c9d-f490fc056c70",
"name": "Wait 10 sec.",
"type": "n8n-nodes-base.wait",
"position": [
224,
-496
],
"parameters": {
"amount": 10
},
"typeVersion": 1.1
},
{
"id": "3d4433b5-05ff-46ed-be1c-dc424b1548b1",
"name": "Send image to estimator",
"type": "n8n-nodes-base.httpRequest",
"position": [
-80,
-496
],
"parameters": {
"url": "https://queue.fal.run/easel-ai/fashion-size-estimator",
"method": "POST",
"options": {},
"jsonBody": "={\n \"image\": \"{{$json.Image}}\"\n} ",
"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": "e2d4e2ad-19f6-43ee-b865-a655497b70a6",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-608,
-1344
],
"parameters": {
"color": 6,
"width": 340,
"height": 556,
"content": "## Image\n"
},
"typeVersion": 1
},
{
"id": "27d1974f-caf9-4d97-b978-7c03ded6e371",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-224,
-1344
],
"parameters": {
"color": 6,
"width": 360,
"height": 556,
"content": "## Result\n\n\"size\": \"S\",\n\"height\": \"5'9\",\n\"bust\": 31,\n\"waist\": 25,\n\"hip\": 37"
},
"typeVersion": 1
},
{
"id": "41410621-8711-4a18-aa30-f5ab7dffc0cb",
"name": "Sticky Note3",
"type": "n8n-nodes-base.stickyNote",
"position": [
-608,
-1632
],
"parameters": {
"color": 3,
"width": 740,
"height": 248,
"content": "# AI-Powered Body Measurement & Clothing Size Estimator from Image\n\nThis workflow automates the process of estimating a person\u2019s fashion size from an uploaded image using an AI model.\n\nThis workflow is an automated pipeline that uses an AI model to estimate a person's body measurements and clothing size from an image URL and send it via email.\n"
},
"typeVersion": 1
},
{
"id": "fe3edd90-e501-49ec-8e3f-da444b7fd377",
"name": "Sticky Note6",
"type": "n8n-nodes-base.stickyNote",
"position": [
-192,
-720
],
"parameters": {
"color": 3,
"width": 980,
"height": 428,
"content": "## STEP 1 - GET API KEY (YOURAPIKEY)\nCreate an account [here](https://fal.ai/) and obtain API KEY.\nIn the node \"Create Image\" set \"Header Auth\" and set:\n- Name: \"Authorization\"\n- Value: \"Key YOURAPIKEY\""
},
"typeVersion": 1
},
{
"id": "3afee985-f999-4289-8843-85760d6737bf",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
-128,
-560
],
"parameters": {
"color": 7,
"width": 224,
"height": 208,
"content": "Send the image url to Fashion size estimator model"
},
"typeVersion": 1
},
{
"id": "95f36724-4e7f-4b8d-bc64-c0213f6b6346",
"name": "Sticky Note4",
"type": "n8n-nodes-base.stickyNote",
"position": [
352,
-560
],
"parameters": {
"color": 7,
"width": 368,
"height": 208,
"content": "Is the result ready?"
},
"typeVersion": 1
},
{
"id": "6973ea50-3d57-40b8-847a-6f2c3fbefe84",
"name": "Get result",
"type": "n8n-nodes-base.httpRequest",
"position": [
-336,
-16
],
"parameters": {
"url": "=https://queue.fal.run/easel-ai/fashion-size-estimator/requests/{{ $json.request_id }}",
"options": {},
"authentication": "genericCredentialType",
"genericAuthType": "httpHeaderAuth"
},
"credentials": {
"httpHeaderAuth": {
"name": "<your credential>"
}
},
"typeVersion": 4.2
},
{
"id": "f31f0a19-ca0d-4f92-85ca-8a9ade8b5301",
"name": "Sticky Note5",
"type": "n8n-nodes-base.stickyNote",
"position": [
-352,
-240
],
"parameters": {
"color": 6,
"width": 496,
"height": 544,
"content": "## STEP 2\nGet result and send to thank you page, email or webhook\n"
},
"typeVersion": 1
},
{
"id": "e8e75382-8e4d-4fd2-87ca-7d60363bcf60",
"name": "Webhook",
"type": "n8n-nodes-base.webhook",
"position": [
-368,
-656
],
"parameters": {
"path": "5e2d6316-210c-479a-8624-7b831945c338",
"options": {}
},
"typeVersion": 2.1
},
{
"id": "0f655c73-d23e-4a92-a931-ef4e960a7c75",
"name": "Respond to Webhook",
"type": "n8n-nodes-base.respondToWebhook",
"position": [
-64,
160
],
"parameters": {
"options": {}
},
"typeVersion": 1.4
},
{
"id": "a4ea5edc-bb79-448c-967c-75c15a4d7bf6",
"name": "Send a message",
"type": "n8n-nodes-base.gmail",
"position": [
592,
-160
],
"parameters": {
"sendTo": "YOUR_EMAIL",
"message": "={{ $json.email_text }}",
"options": {},
"subject": "Size estimator"
},
"credentials": {
"gmailOAuth2": {
"name": "<your credential>"
}
},
"typeVersion": 2.1
},
{
"id": "1b67b462-687e-4db9-a161-8a9fb3c80a7a",
"name": "AI Agent",
"type": "@n8n/n8n-nodes-langchain.agent",
"position": [
240,
-160
],
"parameters": {
"text": "=You are a system that, upon receiving the following inputs:\n\nSize: {{ $json.size }}\n\nHeight: {{ $json.height }}\n\nBust: {{ $json.bust }}\n\nWaist: {{ $json.waist }}\n\nHip: {{ $json.hip }}\n\nmust generate an HTML email using the template provided ",
"options": {},
"promptType": "define",
"hasOutputParser": true
},
"typeVersion": 3
},
{
"id": "2d8ac08f-519d-492a-9137-157422a9a889",
"name": "OpenAI Chat Model",
"type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
"position": [
224,
32
],
"parameters": {
"model": {
"__rl": true,
"mode": "list",
"value": "gpt-4.1-mini"
},
"options": {}
},
"credentials": {
"openAiApi": {
"name": "<your credential>"
}
},
"typeVersion": 1.2
},
{
"id": "33331621-a804-4ee6-9727-63749509fe42",
"name": "Structured Output Parser",
"type": "@n8n/n8n-nodes-langchain.outputParserStructured",
"position": [
432,
32
],
"parameters": {
"schemaType": "manual",
"inputSchema": "{\n\t\"type\": \"object\",\n\t\"properties\": {\n\t\t\"email_text\": {\n\t\t\t\"type\": \"string\"\n\t\t}\n\t}\n}"
},
"typeVersion": 1.3
},
{
"id": "170b37ec-72dd-4d15-980f-159d5479d8ff",
"name": "Sticky Note7",
"type": "n8n-nodes-base.stickyNote",
"position": [
192,
-240
],
"parameters": {
"color": 4,
"width": 592,
"height": 544,
"content": "## STEP 3\nCreate an email and send the result\n"
},
"typeVersion": 1
},
{
"id": "2d6d46c0-9473-46d2-ab9d-6e95d7940d51",
"name": "Sticky Note8",
"type": "n8n-nodes-base.stickyNote",
"position": [
176,
-1632
],
"parameters": {
"width": 752,
"height": 464,
"content": "## How it works\n\n\n1. **Form Trigger:** The workflow starts with a public form where a user submits a URL of an image.\n2. **AI Processing Request:** The submitted image URL is sent to the `fal.run` AI service (specifically, the \"fashion-size-estimator\" model) via a POST request. This initial request places the job in a queue and returns a unique `request_id`.\n3. **Polling for Completion:** The AI processing is asynchronous and takes some time. The workflow enters a loop where it:\n * **Waits:** Pauses for 10 seconds to give the AI model time to process the request.\n * **Checks Status:** Uses the `request_id` to check the status of the job.\n * **Conditional Check:** An IF node checks if the status is \"COMPLETED\".\n * If `NO` (not completed), the loop repeats (wait, then check again).\n * If `YES`, the workflow exits the loop.\n4. **Fetching and Displaying Results:** Once processing is complete, the workflow retrieves the final result (containing the size, height, bust, waist, and hip measurements) and automatically displays it to the user on a \"thank you\" page."
},
"typeVersion": 1
},
{
"id": "3e40a712-9910-4d46-85ee-72985bd4f346",
"name": "Sticky Note9",
"type": "n8n-nodes-base.stickyNote",
"position": [
176,
-1152
],
"parameters": {
"width": 752,
"height": 368,
"content": "## Set up steps\n\nTo make this workflow operational, you need to configure the API authentication.\n\n1. **Obtain an API Key:**\n * Create an account at fal.ai\n * Navigate to your account settings to generate an API key.\n\n2. **Configure Credentials in n8n:**\n * In your n8n instance, create a new HTTP Header Auth credential (you can name it \"Fal.run API\").\n * Set the **Name** field to `Authorization`.\n * Set the **Value** field to `Key YOURAPIKEY`, replacing \"YOURAPIKEY\" with the actual key you obtained from fal.ai.\n * Ensure this credential is correctly selected in the three HTTP Request nodes: \"Send image to estimator\", \"Get status\", and \"Get result\".\n"
},
"typeVersion": 1
}
],
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "c986a53d-909c-4b78-bb0d-a9af5ae15100",
"connections": {
"Webhook": {
"main": [
[
{
"node": "Send image to estimator",
"type": "main",
"index": 0
}
]
]
},
"AI Agent": {
"main": [
[
{
"node": "Send a message",
"type": "main",
"index": 0
}
]
]
},
"Completed?": {
"main": [
[
{
"node": "Get result",
"type": "main",
"index": 0
}
],
[
{
"node": "Wait 10 sec.",
"type": "main",
"index": 0
}
]
]
},
"Get result": {
"main": [
[
{
"node": "Form",
"type": "main",
"index": 0
},
{
"node": "Respond to Webhook",
"type": "main",
"index": 0
},
{
"node": "AI Agent",
"type": "main",
"index": 0
}
]
]
},
"Get status": {
"main": [
[
{
"node": "Completed?",
"type": "main",
"index": 0
}
]
]
},
"Wait 10 sec.": {
"main": [
[
{
"node": "Get status",
"type": "main",
"index": 0
}
]
]
},
"OpenAI Chat Model": {
"ai_languageModel": [
[
{
"node": "AI Agent",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"On form submission": {
"main": [
[
{
"node": "Send image to estimator",
"type": "main",
"index": 0
}
]
]
},
"Send image to estimator": {
"main": [
[
{
"node": "Wait 10 sec.",
"type": "main",
"index": 0
}
]
]
},
"Structured Output Parser": {
"ai_outputParser": [
[
{
"node": "AI Agent",
"type": "ai_outputParser",
"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.
gmailOAuth2httpHeaderAuthopenAiApi
Pro
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About this workflow
This workflow automates the process of estimating a person’s fashion size from an uploaded image using an AI model.
Source: https://n8n.io/workflows/10863/ — original creator credit. Request a take-down →
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