curl --request POST \
  --url https://app.thinnest.ai/api/v1/forms \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "Delivery address",
  "category": "CONTACT_US",
  "form": {
    "title": "Where should we deliver?",
    "submitLabel": "Send",
    "fields": [
      {
        "name": "address",
        "label": "Full address",
        "kind": "paragraph",
        "required": true
      },
      {
        "name": "pincode",
        "label": "PIN code",
        "kind": "number",
        "required": true
      },
      {
        "name": "slot",
        "label": "Delivery slot",
        "kind": "choice",
        "options": [
          "Morning",
          "Evening"
        ]
      },
      {
        "name": "order",
        "label": "Order number",
        "kind": "text",
        "prefill": true
      }
    ]
  }
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    name: 'Delivery address',
    category: 'CONTACT_US',
    form: {
      title: 'Where should we deliver?',
      submitLabel: 'Send',
      fields: [
        {name: 'address', label: 'Full address', kind: 'paragraph', required: true},
        {name: 'pincode', label: 'PIN code', kind: 'number', required: true},
        {
          name: 'slot',
          label: 'Delivery slot',
          kind: 'choice',
          options: ['Morning', 'Evening']
        },
        {name: 'order', label: 'Order number', kind: 'text', prefill: true}
      ]
    }
  })
};

fetch('https://app.thinnest.ai/api/v1/forms', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://app.thinnest.ai/api/v1/forms"

payload = {
    "name": "Delivery address",
    "category": "CONTACT_US",
    "form": {
        "title": "Where should we deliver?",
        "submitLabel": "Send",
        "fields": [
            {
                "name": "address",
                "label": "Full address",
                "kind": "paragraph",
                "required": True
            },
            {
                "name": "pincode",
                "label": "PIN code",
                "kind": "number",
                "required": True
            },
            {
                "name": "slot",
                "label": "Delivery slot",
                "kind": "choice",
                "options": ["Morning", "Evening"]
            },
            {
                "name": "order",
                "label": "Order number",
                "kind": "text",
                "prefill": True
            }
        ]
    }
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

{
  "id": "form_9e2c4a7b-1d5f-4c38-8b6e-0a3f7d2c9e15",
  "name": "Delivery address",
  "agent": "ag_2c7e9a14-5b3d-4f8e-a1c6-7d9b0e3f5a21",
  "category": "CONTACT_US",
  "form": {
    "title": "Where should we deliver?",
    "submitLabel": "Send",
    "fields": [
      {
        "name": "address",
        "label": "Full address",
        "kind": "paragraph",
        "required": true
      },
      {
        "name": "pincode",
        "label": "PIN code",
        "kind": "number",
        "required": true
      },
      {
        "name": "slot",
        "label": "Delivery slot",
        "kind": "choice",
        "required": false,
        "options": [
          "Morning",
          "Evening"
        ]
      },
      {
        "name": "order",
        "label": "Order number",
        "kind": "text",
        "required": false,
        "prefill": true
      }
    ]
  },
  "published": false,
  "publishedAt": null,
  "createdAt": "2026-10-06T10:20:51.093Z",
  "updatedAt": "2026-10-06T10:20:51.093Z"
}

{
  "error": "\"Delivery slot\" is a choice, so it needs at least 2 options."
}

{
  "error": "Send a valid API key as `Authorization: Bearer <key>`."
}

{
  "error": "This API key is read-only: it can read everything but change nothing."
}

{
  "error": "That agent was not found."
}

{
  "error": "A form with that name already exists."
}

{
  "error": "Over 240 requests a minute. Slow down and retry."
}