{"name":"Four Pillars API","description":"Deterministic Korean saju (four pillars) and manse-calendar calculation.","endpoints":{"charts":"POST /v1/charts","policies":"GET /v1/policies","solar_terms":"GET /v1/solar-terms?year=YYYY","lunar_months":"GET /v1/lunar-months?lunar_year=YYYY","ready":"GET /health/ready"},"auth":"X-API-Key header","openapi":"https://perpetual.smartlink.ai.kr/openapi.json","llms_txt":"https://perpetual.smartlink.ai.kr/llms.txt","docs":"https://perpetual.smartlink.ai.kr/en/"}