create_og_image
Create an Open Graph social preview image
Render a 1200x630 PNG Open Graph / social-card image from a template and return its public URL (for og:image and twitter:image tags), size and ready-to-paste meta tags. Templates: blog, launch, docs, minimal, gradient. Optional inline PNG with include_image. Same engine, cache and free-tier limits as GET /api/og. Read-only (renders are cached; nothing is stored about you).
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