Aitor | 1Node This workflow corresponds to n8n.io template #6577 — we link there as the canonical source.
This workflow follows the Form Trigger → HTTP Request recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
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{
"id": "Zgf81bcaaB04rjcd",
"meta": {
"templateCredsSetupCompleted": true
},
"name": "Start an outbound Vapi phone call from a new n8n form submission",
"tags": [],
"nodes": [
{
"id": "cb6ee340-933a-4699-bc0a-be7605309df7",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
158,
-284
],
"parameters": {
"width": 260,
"height": 524,
"content": "## Set Vapi fields\nYou must set the following fields that you can obtain inside your Vapi account \n- phone number id which will make the call\n- assistant id which will be enabled in the call\n- your Vapi api key\n\n## Set country code\n- insert the phone number country code. Include the + symbol and no spaces."
},
"typeVersion": 1
},
{
"id": "b5557910-7469-4937-9229-1d599ad5bf2d",
"name": "Start outbound Vapi call",
"type": "n8n-nodes-base.httpRequest",
"position": [
464,
80
],
"parameters": {
"url": "https://api.vapi.ai/call",
"method": "POST",
"options": {},
"jsonBody": "={\n \"assistantId\": \"{{ $json.vapiAssistantId }}\",\n \"phoneNumberId\": \"{{ $json.vapiPhoneNumberId }}\",\n \"customer\": {\n \"number\": \"{{ $('On form submission').item.json.Phone }}\"\n }\n}\n",
"sendBody": true,
"sendHeaders": true,
"specifyBody": "json",
"headerParameters": {
"parameters": [
{
"name": "Authorization",
"value": "=Bearer {{ $json.vapiApi }}"
}
]
}
},
"typeVersion": 4.2
},
{
"id": "e4039ec8-1e6e-4d59-ab3c-14727562cdae",
"name": "Set fields",
"type": "n8n-nodes-base.set",
"position": [
240,
80
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "f38947e1-c75a-44cc-88f9-c44fc80bada8",
"name": "vapiPhoneNumberId",
"type": "string",
"value": "insert-id"
},
{
"id": "463ed66e-e072-48dc-a75d-a3815fd07de0",
"name": "vapiAssistantId",
"type": "string",
"value": "insert-id"
},
{
"id": "93f058cd-e015-4b83-a16f-efceddafb128",
"name": "vapiApi",
"type": "string",
"value": "insert-api"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "fe87d956-e2f6-4fbd-ac30-e09b3c48bb15",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
-624,
-160
],
"parameters": {
"color": 4,
"width": 320,
"height": 472,
"content": "## Requirements \n### n8n form\n- A text field that takes a full international phone number including the + symbol and country code. Example for US: +11234567890.\n- Add more fields according to your use case\n\n### Vapi\n- A [Vapi](https://vapi.ai/?aff=onenode) account with credit\n- A connected phone number which will make the calls\n- An assistant created and ready to make calls\n- Vapi api key \n\n### Useful links\n- [Vapi docs](https://docs.vapi.ai/api-reference/calls/create)"
},
"typeVersion": 1
},
{
"id": "5855a19a-0c94-4ca7-ac4c-330fd7b8a194",
"name": "On form submission",
"type": "n8n-nodes-base.formTrigger",
"position": [
-208,
80
],
"parameters": {
"options": {
"appendAttribution": false
},
"formTitle": "Lead form",
"formFields": {
"values": [
{
"fieldLabel": "Name",
"requiredField": true
},
{
"fieldType": "email",
"fieldLabel": "Email",
"requiredField": true
},
{
"fieldLabel": "Phone",
"placeholder": "Insert + symbol and country code without spaces",
"requiredField": true
}
]
}
},
"typeVersion": 2.2
},
{
"id": "3075f3b5-12d0-465a-b1ff-0b13d928f684",
"name": "Wait 2min",
"type": "n8n-nodes-base.wait",
"position": [
16,
80
],
"parameters": {
"unit": "minutes",
"amount": 2
},
"typeVersion": 1.1
}
],
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "28254a07-4ced-4c28-b49f-9eec8cb01a3c",
"connections": {
"Wait 2min": {
"main": [
[
{
"node": "Set fields",
"type": "main",
"index": 0
}
]
]
},
"Set fields": {
"main": [
[
{
"node": "Start outbound Vapi call",
"type": "main",
"index": 0
}
]
]
},
"On form submission": {
"main": [
[
{
"node": "Wait 2min",
"type": "main",
"index": 0
}
]
]
}
}
}
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About this workflow
This n8n automation connects your n8n form submissions to Vapi AI, enabling you to immediately call new respondents with a personalized voice AI assistant, as soon as the form is submitted. An n8n form node published and accessible to users. The form must include a phone number…
Source: https://n8n.io/workflows/6577/ — original creator credit. Request a take-down →
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