from typing import Dict, Any

class ContractRegistry:
    def __init__(self) -> None:
        self._contracts: Dict[str, Dict[str, Any]] = {}

    def register_contract(self, name: str, schema: Dict[str, Any], version: str = "1.0.0") -> None:
        self._contracts[name] = {"schema": schema, "version": version}

    def get_contract(self, name: str) -> Dict[str, Any] | None:
        return self._contracts.get(name)

    def all_contracts(self) -> Dict[str, Any]:
        return self._contracts