{"message":"Gym Management System API v2.0","security":"OAuth2 + JWT (RS256)","token_endpoint":"/oauth/token","jwks_endpoint":"/.well-known/jwks.json","documentation":"/docs","endpoints":{"membership_plans":"/api/membership-plans","gym_catalog":"/api/gym-catalog","users":"/api/users","payments":"/api/payments","webhooks":"/webhooks/payments"}}