Validate the idea before your agent builds it.

body='{"clientRunId":"run-online-001","idea":"A workflow automation service for solo founders that validates market demand before they build.","publish":true}'
timestamp=$(date -u +"%Y-%m-%dT%H:%M:%S.000Z")
nonce=$(openssl rand -hex 16)
body_hash=$(printf "%s" "$body" | openssl dgst -sha256 -binary | xxd -p -c 256)
canonical="POST
/api/agent/analyses

$body_hash
$timestamp
$nonce"
signature="sha256=$(printf "%s" "$canonical" | openssl dgst -sha256 -hmac "$PREUVE_AGENT_SECRET" -binary | xxd -p -c 256)"

curl https://preuve.ai/api/agent/analyses \
  -H "content-type: application/json" \
  -H "x-preuve-key: $PREUVE_AGENT_KEY" \
  -H "x-preuve-timestamp: $timestamp" \
  -H "x-preuve-nonce: $nonce" \
  -H "x-preuve-signature: $signature" \
  --data "$body"

import { createHash, createHmac, randomUUID } from 'node:crypto';

async function signedFetch(path, { method = 'GET', body } = {}) {
  const rawBody = body ? JSON.stringify(body) : '';
  const timestamp = new Date().toISOString();
  const nonce = randomUUID();
  const canonical = [
    method,
    path,
    '',
    createHash('sha256').update(rawBody).digest('hex'),
    timestamp,
    nonce,
  ].join('\n');
  const signature = createHmac('sha256', process.env.PREUVE_AGENT_SECRET)
    .update(canonical)
    .digest('hex');

  return fetch(`https://preuve.ai${path}`, {
    method,
    headers: {
      'content-type': 'application/json',
      'x-preuve-key': process.env.PREUVE_AGENT_KEY,
      'x-preuve-timestamp': timestamp,
      'x-preuve-nonce': nonce,
      'x-preuve-signature': `sha256=${signature}`,
    },
    body: rawBody || undefined,
  });
}

{
  "id": "run_123",
  "reportId": "report_123",
  "clientRunId": "run-online-001",
  "status": "PROCESSING",
  "progressStep": "MARKET_RESEARCH",
  "publish": true,
  "reportUrl": "https://preuve.ai/app/results?id=report_123",
  "shareUrl": "https://preuve.ai/share/abc123"
}