Overview
Version 2025-09 is deprecated. New integrations should start on 2026-01 instead - use the version switcher above to jump there. This version stays online, unchanged, for existing integrations mid-migration.
This page also sets frontmatter seo.noindex: true - it still builds and is reachable through normal navigation (the version switcher above), but renders <meta name="robots" content="noindex, nofollow"> and is excluded from both sitemap.xml and llms.txt/llms-full.txt, since a deprecated version isn’t content search engines or AI crawlers should treat as canonical.
The 2025-09 API covers the same widget resource as 2026-01, with two differences that motivated the newer version:
- No
colorfield on widgets - it was added in 2026-01. - Rate limit headers used the non-standard
X-Rate-Limit-*prefix instead ofX-RateLimit-*.
Both are additive/renaming changes only - if you’re migrating, a widget response from either version can be read with the same client code as long as you don’t depend on the fields/headers listed above.