POST /brands/similar rank brands by embedding similarity to source brand names.
Send Authorization: Bearer <your-platform-api-key> with every request. POST requests also require Content-Type: application/json. Use the base URL https://api.storerouter.ai/v1.
Send a JSON body with required brands (1–20 case-insensitive source names), limit (1–100, default 24), optional facets, and optional exclusionFacets. Unknown fields return 422.
totalFound and ranked results, using the brand search response fields. Returns 400 with brands_have_no_embeddings when none of the source brands have embeddings, and 503 with brand_search_unavailable when the search backend is unavailable.
See Discover brands for brand-versus-store semantics, catalog scope, filter rules, MCP equivalents, and shared authorization, validation, and rate-limit errors.