{"object": "api_root", "api_version": "v1", "api_name": "Signatures Health API", "data": {"name": "Signatures Health API", "version": "v1", "status": "available", "delivery_model": "api_first", "resources": {"health": "/v1/health/", "version": "/v1/version/", "auth": "/v1/auth/", "openapi": "/v1/openapi.json", "docs": "/v1/docs/", "patients": "/v1/patients/{patient_id}/", "assessments": "/v1/assessments/", "calculators": "/v1/calculators/", "reasoning": "/v1/reasoning/"}, "principles": ["Shared Signatures services power UI, API, and future SDK clients.", "Validated calculations and governed reasoning remain server-side.", "Patient-specific capabilities require explicit authorization.", "Provenance and safety state are preserved in public contracts."]}}