Serve a signed image URL
The OG-image primitive. Authenticated by URL signature (mint URLs via POST /api/v1/generate/sign) — no Authorization header, so the URL works in meta tags and no-code tools. Responds 302 to a stable, immutable CDN PNG. Deterministic caching: the same URL never renders twice, and only the first render of a unique URL is billed (1 credit).
Path Parameters
Design preset slug, optionally version-pinned ("promo-bold@3")
Query Parameters
Export profile (default facebook_16x9 — 1200×630, the OG size)
png, jpg Deterministic seed override (digits)
Account attribution — embedded and signed at mint time; do not construct manually
URL signature (from POST /sign)
Expiry timestamp (Unix ms); absent = non-expiring
Response
Redirect to the rendered image (immutable CDN URL)