HKUDS/nanobot · error · ValueError

scratchpad is full (max {max_keys} keys)

Error message

scratchpad is full (max {max_keys} keys)

What it means

Error "scratchpad is full (max {max_keys} keys)" thrown in HKUDS/nanobot.

Source

Thrown at nanobot/agent/tools/runtime_control.py:230

        self.__target.max_iterations = value
        self.__target.subagents.max_iterations = value

    def set_context_window_tokens(self, value: int) -> LLMRuntime:
        return self.__target.set_runtime_context_window(value)

    def set_provider_retry_mode(self, value: str) -> None:
        self.__target.provider_retry_mode = value

    def set_max_tool_result_chars(self, value: int) -> None:
        self.__target.max_tool_result_chars = value

    def set_workspace_display(self, value: str) -> None:
        """Preserve MyTool display compatibility without changing path enforcement."""
        self.__workspace_display = value

    def set_scratchpad(self, key: str, value: JsonValue, *, max_keys: int) -> None:
        if key not in self.__scratchpad and len(self.__scratchpad) >= max_keys:
            raise ValueError(f"scratchpad is full (max {max_keys} keys)")
        self.__scratchpad[key] = value


def _snapshot_model_presets(
    presets: Mapping[str, ModelPresetConfig],
) -> dict[str, dict[str, object]]:
    return {
        name: {
            "model": preset.model,
            "provider": preset.provider,
            "max_tokens": preset.max_tokens,
            "context_window_tokens": preset.context_window_tokens,
            "temperature": preset.temperature,
            "reasoning_effort": preset.reasoning_effort,
        }
        for name, preset in presets.items()
    }

View on GitHub (pinned to 42f37dc4c0)

When it happens

Trigger: Thrown at nanobot/agent/tools/runtime_control.py:230 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of HKUDS/nanobot@42f37dc4c0 (2026-08-26). Data as JSON: /api/errors/45a098680b03cdbf. Report an issue: GitHub.