"""Abstract base type for evaluation model backends."""

from __future__ import annotations

from abc import ABC, abstractmethod


class ModelAdapter(ABC):
    """Minimal async completion interface used by ``eval.harness``."""

    @property
    @abstractmethod
    def name(self) -> str:
        """Stable identifier for this model (logged in eval results)."""

    @abstractmethod
    async def complete(self, prompt: str) -> str:
        """Return raw model output for the given user/system prompt."""