{
  "capabilities": {
    "description": "Backend adapter capabilities matrix",
    "adapters": {
      "prisma": {
        "display_name": "Prisma ORM",
        "description": "Multi-database ORM with migrations",
        "version": "6.3+",
        "features": {
          "transactions": true,
          "nested_transactions": true,
          "joins": true,
          "full_text_search": false,
          "ttl": false,
          "json_queries": true,
          "aggregations": true,
          "relations": true,
          "migrations": true,
          "schema_introspection": true,
          "connection_pooling": true,
          "read_replicas": false
        },
        "supported_databases": [
          "postgresql",
          "mysql",
          "sqlite",
          "sqlserver",
          "mongodb",
          "cockroachdb"
        ],
        "limitations": [
          "Full-text search depends on database",
          "TTL not natively supported"
        ],
        "performance": {
          "bulk_insert": "excellent",
          "bulk_update": "good",
          "complex_queries": "excellent"
        }
      },
      "sqlite": {
        "display_name": "SQLite Direct",
        "description": "Embedded SQL database",
        "version": "3.40+",
        "features": {
          "transactions": true,
          "nested_transactions": true,
          "joins": true,
          "full_text_search": true,
          "ttl": false,
          "json_queries": true,
          "aggregations": true,
          "relations": true,
          "migrations": "manual",
          "schema_introspection": true,
          "connection_pooling": false,
          "read_replicas": false
        },
        "supported_databases": [
          "sqlite"
        ],
        "limitations": [
          "Single writer at a time",
          "No connection pooling",
          "TTL requires manual cleanup"
        ],
        "performance": {
          "bulk_insert": "good",
          "bulk_update": "good",
          "complex_queries": "good"
        }
      },
      "mongodb": {
        "display_name": "MongoDB Driver",
        "description": "Document database",
        "version": "6.0+",
        "features": {
          "transactions": true,
          "nested_transactions": false,
          "joins": false,
          "full_text_search": true,
          "ttl": true,
          "json_queries": true,
          "aggregations": true,
          "relations": false,
          "migrations": "manual",
          "schema_introspection": false,
          "connection_pooling": true,
          "read_replicas": true
        },
        "supported_databases": [
          "mongodb"
        ],
        "limitations": [
          "No native joins (use $lookup)",
          "No foreign keys",
          "Schema-less (validation optional)"
        ],
        "performance": {
          "bulk_insert": "excellent",
          "bulk_update": "excellent",
          "complex_queries": "good"
        }
      }
    },
    "feature_matrix": {
      "transactions": {
        "description": "ACID transaction support",
        "supported_by": [
          "prisma",
          "sqlite",
          "mongodb"
        ],
        "required_for": [
          "Multi-step operations",
          "Data consistency"
        ]
      },
      "joins": {
        "description": "SQL-style JOIN operations",
        "supported_by": [
          "prisma",
          "sqlite"
        ],
        "fallback": "Multiple queries with in-memory join"
      },
      "full_text_search": {
        "description": "Full-text search capabilities",
        "supported_by": [
          "sqlite",
          "mongodb"
        ],
        "fallback": "LIKE queries or external search engine"
      },
      "ttl": {
        "description": "Automatic expiration of records",
        "supported_by": [
          "mongodb"
        ],
        "fallback": "Manual cleanup job"
      },
      "json_queries": {
        "description": "Query JSON fields",
        "supported_by": [
          "prisma",
          "sqlite",
          "mongodb"
        ]
      },
      "aggregations": {
        "description": "Aggregate functions (COUNT, SUM, etc.)",
        "supported_by": [
          "prisma",
          "sqlite",
          "mongodb"
        ]
      },
      "relations": {
        "description": "Foreign key relationships",
        "supported_by": [
          "prisma",
          "sqlite"
        ]
      },
      "migrations": {
        "description": "Schema migration support",
        "supported_by": [
          "prisma"
        ],
        "manual": [
          "sqlite",
          "mongodb"
        ]
      }
    },
    "capability_detection": {
      "runtime_check": true,
      "negotiation": true,
      "graceful_degradation": true
    },
    "version_compatibility": {
      "min_api_version": "1.0",
      "current_api_version": "1.0",
      "breaking_changes": [
        {
          "version": "2.0",
          "changes": [
            "TBD"
          ]
        }
      ]
    }
  }
}