{
 "id": "shopify-0d086a53a5",
 "platform": "shopify",
 "title": "Deprecation of POST requests without a Content-Length or Transfer-Encoding: chunked header",
 "summary": "We're making changes to our HTTP/1.0 and HTTP/1.1 request handling to improve security and compliance with web standards. Starting August 1, 2025, all POST requests to Shopify APIs must include either a Content-Length header or Transfer-Encoding: chunked header, or they'll return an HTTP 411 error.",
 "categories": [
  "deprecation",
  "breaking_change",
  "policy"
 ],
 "tags": [
  "API",
  "Action Required",
  "Admin GraphQL API",
  "Admin REST API",
  "Customer Account API",
  "Deprecation announcement",
  "Events & webhooks",
  "Payments Apps API",
  "Storefront API"
 ],
 "published_date": "2025-06-28",
 "effective_date": "2025-08-01",
 "effective_date_precision": "day",
 "source_url": "https://shopify.dev/changelog/deprecation-of-post-requests-without-a-content-length-or-transfer-encoding-chunked-header",
 "source_name": "Shopify developer changelog",
 "fetched_at": "2026-10-17T03:44:00+00:00",
 "collector": "shopify/changelog",
 "first_seen": "2026-10-17T01:05:46+00:00",
 "in_source": true,
 "last_seen_in_source": "2026-10-17T03:44:00+00:00",
 "upcoming": false,
 "url": "https://adstackwatch.com/changes/shopify-0d086a53a5/"
}