curl -X POST https://api.u1.archetypeai.app/v0.5/files/uploads/upl_1mehceg8cn80qsekh46143whrx/parts/urls \
  -H "Authorization: Bearer $ATAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "part_numbers": [43, 44, 45]
  }'

import requests
import os

api_key = os.environ.get("ATAI_API_KEY")
upload_id = "upl_1mehceg8cn80qsekh46143whrx"

response = requests.post(
    f"https://api.u1.archetypeai.app/v0.5/files/uploads/{upload_id}/parts/urls",
    headers={
        "Authorization": f"Bearer {api_key}",
        "Content-Type": "application/json",
    },
    json={"part_numbers": [43, 44, 45]},
)

for part in response.json()["parts"]:
    print(f"part {part['part_number']}: expires {part['expires_at']}")

const uploadId = "upl_1mehceg8cn80qsekh46143whrx";

const response = await fetch(
  `https://api.u1.archetypeai.app/v0.5/files/uploads/${uploadId}/parts/urls`,
  {
    method: "POST",
    headers: {
      Authorization: `Bearer ${process.env.ATAI_API_KEY}`,
      "Content-Type": "application/json",
    },
    body: JSON.stringify({ part_numbers: [43, 44, 45] }),
  }
);

const { parts } = await response.json();
for (const p of parts) {
  console.log(`part ${p.part_number}: expires ${p.expires_at}`);
}

{
  "parts": [
    {
      "part_number": 43,
      "url": "https://storage.example.com/upload/upl_1mehceg8cn80qsekh46143whrx/43?X-Amz-Signature=...",
      "offset": 352321536,
      "length": 8388608,
      "expires_at": "2026-04-28T16:18:42Z"
    },
    {
      "part_number": 44,
      "url": "https://storage.example.com/upload/upl_1mehceg8cn80qsekh46143whrx/44?X-Amz-Signature=...",
      "offset": 360710144,
      "length": 8388608,
      "expires_at": "2026-04-28T16:18:42Z"
    },
    {
      "part_number": 45,
      "url": "https://storage.example.com/upload/upl_1mehceg8cn80qsekh46143whrx/45?X-Amz-Signature=...",
      "offset": 369098752,
      "length": 8388608,
      "expires_at": "2026-04-28T16:18:42Z"
    }
  ]
}

{
  "errors": [
    {
      "code": "invalid_upload_parts",
      "message": "Part numbers must be non-empty and within [1, num_parts].",
      "suggestion": "Check the parts/part_numbers array in your request",
      "error_uid": "err-xxxxxxxx"
    }
  ]
}

{
  "errors": [
    {
      "code": "unauthorized_request",
      "message": "Unauthorized or invalid access.",
      "suggestion": "Provide valid authentication credentials and ensure they have the required permissions.",
      "error_uid": "err-xxxxxxxx"
    }
  ]
}

{
  "errors": [
    {
      "code": "upload_not_found",
      "message": "No upload with the given upload_id was found for the organization.",
      "suggestion": "Verify the upload_id and that the upload has not been completed or aborted.",
      "error_uid": "err-xxxxxxxx"
    }
  ]
}

{
  "errors": [
    {
      "code": "upload_already_completed",
      "message": "Upload has already been completed; no further URLs can be generated.",
      "suggestion": "Use the file_id returned by /complete to operate on the file.",
      "error_uid": "err-xxxxxxxx"
    }
  ]
}