"Loading .env file Error

[ducmaster01]

{"version": "0.1.0", "event": "Starting Claude Code Telegram Bot", "logger": "src.main", "level": "info", "timestamp": "2025-07-09T01:31:28.034511Z"}
{"path": ".env", "event": "Loading .env file", "logger": "src.config.loader", "level": "info", "timestamp": "2025-07-09T01:31:28.035508Z"}
{"environment": "development", "event": "Loading configuration", "logger": "src.config.loader", "level": "info", "timestamp": "2025-07-09T01:31:28.038693Z"}
{"error": "1 validation error for Settings\nclaude_allowed_tools\n  Input should be a valid list [type=list_type, input_value='Read,Write,Edit,Bash,Glo...ead,TodoWrite,WebSearch', input_type=str]\n    For further information visit https://errors.pydantic.dev/2.11/v/list_type", "environment": "development", "event": "Failed to load configuration", "logger": "src.config.loader", "level": "error", "timestamp": "2025-07-09T01:31:28.063478Z"}
{"error": "Configuration loading failed: 1 validation error for Settings\nclaude_allowed_tools\n  Input should be a valid list [type=list_type, input_value='Read,Write,Edit,Bash,Glo...ead,TodoWrite,WebSearch', input_type=str]\n    For further information visit https://errors.pydantic.dev/2.11/v/list_type", "event": "Configuration error", "logger": "src.main", "level": "error", "timestamp": "2025-07-09T01:31:28.063672Z"}
make: *** [Makefile:41: run] Error 1

#.env
CLAUDE_MAX_COST_PER_USER=10.0

# Allowed Claude tools (comma-separated list)
CLAUDE_ALLOWED_TOOLS=Read,Write,Edit,Bash,Glob,Grep,LS,Task,MultiEdit,NotebookRead,NotebookEdit,WebFetch,TodoRead,TodoWrite,WebSearch

[MWZ-Code]

The reason for the validation error is because the Settings class (https://github.com/RichardAtCT/claude-code-telegram/blob/main/src/config/settings.py) automatically loads the environment variable which represents comma-separated list of allowed tools but is loaded in as a string.

You'll need to either remove the default environment variable or, if you want to stay consistent with the pattern, implement your field_validator in "before" mode to catch the error:

class Settings(BaseSettings):

    ...

    @field_validator("claude_allowed_tools", mode="before")
    @classmethod
    def validate_claude_allowed_tools(cls, v: Any) -> Optional[List[str]]:
        """Validate claude_allowed_tools."""
        if isinstance(v, str):
            return [tool.strip() for tool in v.split(",") if tool.strip()]
        return v  # type: ignore[no-any-return]

    ...