{"name":"ssgraph","description":"Persona-graph API — cultural/psychographic grounding for AI applications","entities":8368,"segments":80,"categories":19,"subcategories":158,"built_at":"2026-05-16T01:29:21.902821+00:00","source_version":"latest","endpoints":{"GET /similar/:handle":"Top-K by audience shape (cosine). Optional: ?k=50&category=X&subcategory=Y","GET /affinity/:handle":"Top-K by distinctive co-affinity (PMI). Optional: ?k=50&category=X&drivers=5","GET /similarity/:a/:b":"Pairwise cosine similarity","GET /profile/:handle":"Entity metadata and affinity vector","GET /search?q=":"Resolve a name or handle to entity records","GET /categories":"List all categories and subcategories"},"pricing":{"model":"per-call","rate":"$0.00 / 1,000 calls (free tier)"}}