from typing import Any from core.tools.errors import ToolProviderCredentialValidationError from core.tools.provider.builtin.regex.tools.regex_extract import RegexExpressionTool from core.tools.provider.builtin_tool_provider import BuiltinToolProviderController class RegexProvider(BuiltinToolProviderController): def _validate_credentials(self, credentials: dict[str, Any]) -> None: try: RegexExpressionTool().invoke( user_id='', tool_parameters={ 'content': '1+(2+3)*4', 'expression': r'(\d+)', }, ) except Exception as e: raise ToolProviderCredentialValidationError(str(e))