Fill any document with one API
Upload a PDF form or a Word document, design a page, or write HTML. Send JSON and get back a finished PDF, ready to sign.
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- HIPAA compliant
POST /api/v2/templates/{template_id}/submissions
{
"data": {
"applicant": {
"name": "Maya Chen"
},
"date_of_birth": "1991-04-12",
"employer": "Northwind Health",
"monthly_income": 6200,
"credit_check": true
}
}POST /api/v2/templates/{template_id}/submissions
{
"data": {
"tenant": {
"name": "Maya Chen"
},
"start_date": "2026-11-01",
"charges": [
{
"item": "Rent",
"amount": 2400
},
{
"item": "Deposit",
"amount": 4800
}
]
},
"output_formats": ["docx", "pdf"]
}POST /api/v2/templates/{template_id}/submissions
{
"data": {
"attendee": {
"name": "Maya Chen"
},
"seat": "B12",
"ticket_id": "NWS-20931"
}
}POST /api/v2/templates/{template_id}/submissions
{
"data": {
"invoice_number": "INV-1042",
"customer": {
"name": "Brightwater Studio"
},
"items": [
{
"name": "Onboarding",
"price": 1200
},
{
"name": "Support plan",
"price": 450
}
],
"total": 1650
}
}Dear {{ tenant.name }},
Your lease starts on {{ start_date | date: "%B %-d, %Y" }}. Here is what's due before you move in:
| {% for row in charges %} | |
| {{ row.item }} | {{ row.amount | currency }} |
| {% endfor %} | |
Kind regards,
<h1>Fernway</h1> <p>Invoice {{ invoice_number }}</p> <p>Billed to {{ customer.name }}</p> <table> {% for item in items %} <tr> <td>{{ item.name }}</td> <td>{{ item.price | currency }}</td> </tr> {% endfor %} <tr> <td>Total</td> <td>{{ total | currency }}</td> </tr> </table>
Dear Maya Chen,
Your lease starts on November 1, 2026. Here is what's due before you move in:
| Rent | $2,400.00 |
| Deposit | $4,800.00 |
Kind regards,
| Description | Amount |
|---|---|
| Onboarding | $1,200.00 |
| Support plan | $450.00 |
| Total | $1,650.00 |
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