import requests

url = "https://api.pdfshift.io/v3/invoices"

headers = {"X-API-Key": "<api-key>"}

response = requests.get(url, headers=headers)

print(response.text)

{
  "success": true,
  "invoices": {
    "has_more": true,
    "data": [
      {
        "created": 1763123660000,
        "amount": 99,
        "reference": "PS202511-00010",
        "download_url": "https://api.pdfshift.io/v3/invoices/PS202511-00110.pdf?token=xxx_token_xxx"
      },
      {
        "created": 1760445289000,
        "amount": 99,
        "reference": "PS202510-00109",
        "download_url": "https://api.pdfshift.io/v3/invoices/PS202510-00109.pdf?token=xxx_token_xxx"
      },
      {
        "created": 1757853195000,
        "amount": 99,
        "reference": "PS202509-00108",
        "download_url": "https://api.pdfshift.io/v3/invoices/PS202509-00108.pdf?token=xxx_token_xxx"
      },
      {
        "created": 1755180347000,
        "amount": 99,
        "reference": "PS202508-00107",
        "download_url": "https://api.pdfshift.io/v3/invoices/PS202508-00107.pdf?token=xxx_token_xxx"
      },
      {
        "created": 1752496441000,
        "amount": 99,
        "reference": "PS202507-00106",
        "download_url": "https://api.pdfshift.io/v3/invoices/PS202507-00106.pdf?token=xxx_token_xxx"
      },
      {
        "created": 1749904431000,
        "amount": 99,
        "reference": "PS202506-00105",
        "download_url": "https://api.pdfshift.io/v3/invoices/PS202506-00105.pdf?token=xxx_token_xxx"
      },
      {
        "created": 1747226035000,
        "amount": 99,
        "reference": "PS202505-00104",
        "download_url": "https://api.pdfshift.io/v3/invoices/PS202505-00104.pdf?token=xxx_token_xxx"
      },
      {
        "created": 1744634029000,
        "amount": 99,
        "reference": "PS202504-00103",
        "download_url": "https://api.pdfshift.io/v3/invoices/PS202504-00103.pdf?token=xxx_token_xxx"
      },
      {
        "created": 1741955686000,
        "amount": 99,
        "reference": "PS202503-00102",
        "download_url": "https://api.pdfshift.io/v3/invoices/PS202503-00102.pdf?token=xxx_token_xxx"
      },
      {
        "created": 1739536453000,
        "amount": 99,
        "reference": "PS202502-00101",
        "download_url": "https://api.pdfshift.io/v3/invoices/PS202502-00101.pdf?token=xxx_token_xxx"
      }
    ],
    "limit": 10,
    "page": 0,
    "total": 28
  }
}