Quickstart

1. Get access

Subscribe to the listing for your endpoint. Your marketplace provides credentials and billing.

2. Set your credentials

Set RAPIDAPI_KEY or APY_TOKEN on your server. Python examples require httpx; Node.js examples use built-in fetch.

python -m pip install httpx

export RAPIDAPI_KEY="YOUR_RAPIDAPI_KEY"
# or
export APY_TOKEN="YOUR_APYHUB_TOKEN"

3. Send a request

Start with the sample values, then change the input.

import os
import httpx

base_url = "https://document-generation-api-docx-html-pdf.p.rapidapi.com"
headers = {
    "X-RapidAPI-Key": os.environ["RAPIDAPI_KEY"],
    "X-RapidAPI-Host": "document-generation-api-docx-html-pdf.p.rapidapi.com",
}
payload = {
    "data": {
        "number": "INV-2026-0042",
        "date": "2026-10-16",
        "currency": "$",
        "seller": {
            "name": "Studio North",
            "address": ["1 Example Street"],
        },
        "buyer": {
            "name": "Acme Design",
        },
        "items": [{
                "description": "Design consultation",
                "quantity": 3,
                "unit_price": 85,
                "tax_rate": 0,
            }],
        "notes": "Sample invoice. Payment within 30 days.",
    },
    "format": "pdf",
}
response = httpx.post(
    base_url + "/v1/documents/preset/invoice",
    headers=headers, json=payload, timeout=120
)
response.raise_for_status()
with open("result.pdf", "wb") as output:
    output.write(response.content)

4. Check the result

Check the status and Content-Type before saving the returned file.

Live demos support document presets, templates and e-invoices with up to 10 line items and bounded outputs. General invoice PDFs are not structured e-invoices; use the dedicated e-invoice endpoints for supported standards. No Peppol delivery service.

Errors and retries

• 401 / 403: check your credentials, subscription and feature access.
• 422: correct the input before retrying. Application errors include a detail object with a code and message.
• 429: check your rate limit or plan allowance.
• 502 / 503 / 504: use bounded retries with backoff and honor Retry-After. Retries may consume allowance.

Marketplace errors may use a different format. Keep the status and request identifier for diagnostics; avoid logging API keys or customer files.