deepseek-ai/deepseek-harness · error · TypeError

pass either DeepSeekHarnessConfig or keyword options, not bo

Error message

pass either DeepSeekHarnessConfig or keyword options, not both

What it means

Error "pass either DeepSeekHarnessConfig or keyword options, not both" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at python/sdk/src/deepseek_harness/api.py:58

    session_id: str
    final_response: str
    finish_reason: str | None
    events: list[JsonObject]
    notifications: list[Notification]
    session_root: str | None = None


class DeepSeekHarness:
    """Reusable synchronous SDK for running DeepSeek Harness agent turns.

    The runtime subprocess starts lazily and remains owned by this instance
    across calls to :meth:`run`. Use the instance as a context manager, or call
    :meth:`close` explicitly when finished, so the subprocess is always reaped.
    """

    def __init__(self, config: DeepSeekHarnessConfig | None = None, **kwargs: object) -> None:
        if config is not None and kwargs:
            raise TypeError("pass either DeepSeekHarnessConfig or keyword options, not both")
        self.config = config or DeepSeekHarnessConfig(**kwargs)
        cwd = str(Path(self.config.cwd or Path.cwd()).resolve())
        runtime_cwd = str(Path(self.config.runtime_cwd).resolve()) if self.config.runtime_cwd is not None else cwd
        self._cwd = cwd
        env = dict(self.config.env)
        if self.config.session_root is not None:
            env["DSH_SESSION_ROOT"] = self.config.session_root
        if self.config.cordis is not None:
            env["DSH_CORDIS_CONFIG"] = self.config.cordis
        env["DSH_CWD"] = cwd
        if self.config.base_url is not None:
            env["DEEPSEEK_BASE_URL"] = self.config.base_url
        if self.config.api_key is not None:
            env["DEEPSEEK_API_KEY"] = self.config.api_key

        self._client = HarnessClient(
            HarnessConfig(
                runtime_bin=self.config.runtime_bin,

View on GitHub (pinned to b150a551b8)

Solutions

1. Pass either a DeepSeekHarnessConfig instance or keyword options to the constructor, not both.

When it happens

Trigger: Thrown at python/sdk/src/deepseek_harness/api.py:58 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of deepseek-ai/deepseek-harness@b150a551b8 (2026-08-24). Data as JSON: /api/errors/3f9233e28d1f8224. Report an issue: GitHub.