สูตรสำเร็จ

import time, requests

API = "https://backend.aksonocr.com/api/v3/key-extract"
headers = {"X-API-Key": "<YOUR_API_KEY>"}

with open("invoice.pdf", "rb") as f:
    file_id = requests.post(f"{API}/files", headers=headers, files={"files": f}).json()["files"][0]["id"]

job_id = requests.post(
    f"{API}/jobs",
    headers={**headers, "Idempotency-Key": "invoice-md-001"},
    json={
        "inputs": [{"file_id": file_id}],
        "data_schema": {
            "type": "object",
            "additionalProperties": False,
            "properties": {
                "invoice_no": {"type": "string", "description": "เลขที่ใบแจ้งหนี้"},
                "total": {"type": "number", "description": "ยอดรวม"},
                "line_items": {
                    "type": "array",
                    "description": "รายการสินค้า",
                    "items": {
                        "type": "object",
                        "additionalProperties": False,
                        "properties": {
                            "description": {"type": "string"},
                            "amount": {"type": "number"},
                        },
                    },
                },
            },
        },
        "output": {"evidence": "bbox"},
    },
).json()["id"]

while True:
    status = requests.get(f"{API}/jobs/{job_id}", headers=headers).json()["status"]
    if status in {"completed", "failed", "cancelled", "expired"}:
        break
    time.sleep(2)

result = requests.get(f"{API}/jobs/{job_id}/result", headers=headers).json()
print(result["data"])
print(result["field_metadata"]["/invoice_no"]["regions"][0]["bbox"])

function drawField(ctx, region, pageWidth, pageHeight) {
  const [x1, y1, x2, y2] = region.bbox;
  ctx.strokeStyle = "#ec4899";
  ctx.strokeRect(
    x1 * pageWidth,
    y1 * pageHeight,
    (x2 - x1) * pageWidth,
    (y2 - y1) * pageHeight,
  );
}

for (const [pointer, meta] of Object.entries(result.field_metadata)) {
  for (const region of meta.regions) {
    const page = result.pages.find((p) => p.page === region.page);
    drawField(ctx, region, page.width, page.height);
  }
}

FILE_ID=$(curl -sS -X POST 'https://backend.aksonocr.com/api/v3/key-extract/files' \
  -H 'X-API-Key: <YOUR_API_KEY>' \
  -F '[email protected]' | jq -r '.files[0].id')

curl -sS -X POST 'https://backend.aksonocr.com/api/v3/key-extract/jobs' \
  -H 'X-API-Key: <YOUR_API_KEY>' \
  -H 'Content-Type: application/json' \
  -H 'Idempotency-Key: pages-3-5' \
  -d "{
    \"inputs\": [{ \"file_id\": \"$FILE_ID\", \"pages\": [3, 4, 5] }],
    \"data_schema\": {
      \"type\": \"object\",
      \"properties\": { \"title\": { \"type\": \"string\" } }
    },
    \"output\": { \"evidence\": \"bbox\" }
  }"

{
  "inputs": [{ "file_id": "file_01J9..." }],
  "data_schema": {
    "type": "object",
    "properties": {
      "invoice_no": { "type": "string" }
    }
  },
  "output": { "evidence": "none" }
}