Explore the complete sample package

import { randomUUID, createHash } from 'node:crypto';
import { writeFile } from 'node:fs/promises';

const base = process.env.AMLOK_API_BASE_URL || 'https://api.amlok.io';
const id = process.env.AMLOK_DOCUMENT_ID;
if (!id || !process.env.AMLOK_API_KEY?.startsWith('amlok_test_')) {
  throw new Error('Set a document ID and Sandbox API key.');
}
const response = await fetch(`${base}/v1/documents/${encodeURIComponent(id)}/download-links`, {
  method: 'POST', redirect: 'error', signal: AbortSignal.timeout(30000),
  headers: {
    Authorization: `Bearer ${process.env.AMLOK_API_KEY}`,
    'Content-Type': 'application/json',
    'Idempotency-Key': randomUUID(),
  },
  body: JSON.stringify({ purpose: 'Review fictional Sandbox evidence' }),
});
const body = await response.json();
if (!response.ok) throw new Error(`${response.status}: ${body.error?.message}`);
if (body.meta.environment !== 'sandbox') throw new Error('Expected Sandbox.');
const link = body.data;
if (Date.parse(link.expires_at) <= Date.now()) throw new Error('Request a fresh link.');
const download = await fetch(link.url, {
  redirect: 'error', signal: AbortSignal.timeout(30000),
});
if (!download.ok) throw new Error(`Download failed: ${download.status}`);
const bytes = Buffer.from(await download.arrayBuffer());
if (createHash('sha256').update(bytes).digest('hex') !== link.sha256) {
  throw new Error('File checksum mismatch.');
}
await writeFile('sandbox-document.pdf', bytes, { mode: 0o600 });