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Get Subscription Svg Route

GET 
/v1/subscriptions/:slug/svg

Serve the canonical SVG for a subscription product.

Fallback chain (service layer): color → mono → placeholder (generated from brand name + brand_color, same helper as the brand-catalog placeholder path in :func:services.catalog.get_svg).

Returned X-Subscription-Variant header always describes what the caller actually got: "color", "mono", or "placeholder". Cache-Control is 24h for real SVG and 1h for placeholders so an admin upload propagates within an hour of landing.

Rate-limit tier resolution uses the shared "catalog" bucket (binary endpoints don't fit the Response response_model shape so we cannot use the FastAPI response-param pattern; headers are attached to the outgoing :class:Response directly, parallel to :func:api.v1.svg.get_svg).

Request​

Responses​

Successful Response