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DocumentsInitiate chunked upload

Initiate chunked upload

POST/partners/documents/chunk-upload/initiate

Starts a chunked upload session for a large file.

HMAC signature + Bearer access token
Try this request
Customers APIProjects API

Request body

fileNamestringrequired

Original file name.

folderPathstringrequired

Destination folder path.

fileSizeintegerrequired

Total file size in bytes.

chunkSizeInMBinteger

Chunk size in megabytes.

Responses

200Returns uploadProgressId and chunk configuration.
401Missing or invalid HMAC signature, expired timestamp, or invalid Bearer token. Troubleshoot
403The credential does not have access to this workspace or resource. Troubleshoot
429Rate limit exceeded (100 requests per minute per clientId). Retry after the Retry-After header. Troubleshoot
POSThttps://api.getcount.com/partners/documents/chunk-upload/initiate
Request
import crypto from 'node:crypto';

const BASE_URL = 'https://api.getcount.com';
const CLIENT_ID = process.env.COUNT_CLIENT_ID;
const CLIENT_SECRET = process.env.COUNT_CLIENT_SECRET;
const ACCESS_TOKEN = process.env.COUNT_ACCESS_TOKEN;

const method = 'POST';
const signingPath = '/documents/chunk-upload/initiate';
const timestamp = Math.floor(Date.now() / 1000).toString();
const body = {
  "fileName": "contract-acme-2026.pdf",
  "folderPath": "Contracts",
  "fileSize": 5242880,
  "chunkSizeInMB": 5
};
const bodyString = JSON.stringify(body);

const bodyHash = crypto.createHash('sha256').update(bodyString).digest('hex');
const baseString = `${method}:${signingPath}:${timestamp}:${bodyHash}`;
const signature = crypto.createHmac('sha256', CLIENT_SECRET).update(baseString).digest('hex');

const response = await fetch(`${BASE_URL}/partners/documents/chunk-upload/initiate`, {
  method,
  headers: {
    'x-client-id': CLIENT_ID,
    'x-timestamp': timestamp,
    'x-signature': signature,
    'Content-Type': 'application/json',
    Authorization: `Bearer ${ACCESS_TOKEN}`,
  },
  body: bodyString,
});

console.log(await response.json());
Response · 200
{
  "status": "success",
  "data": {
    "uploadProgressId": "upload-progress-uuid",
    "chunkSizeInBytes": 5242880,
    "totalChunks": 1
  }
}