Daft.ie MCP Server

import type { TextContent } from '@modelcontextprotocol/sdk/types.js'; import { AppError, ValidationError } from '../errors.js'; import logger from '../logger.js'; interface ErrorPayload { errorType: string; toolName?: string; message: string; details?: Record<string, unknown>; receivedParams?: Record<string, unknown>; } /** * Creates a standardized error response for MCP tools. * @param error The error object. * @param toolName The name of the tool where the error occurred. * @param receivedParams The parameters received by the tool. * @returns A content object for the MCP tool response. */ export function createErrorResponse( error: unknown, toolName?: string, receivedParams?: Record<string, unknown> ): { content: TextContent[]; isError: true } { let payload: ErrorPayload; if (error instanceof ValidationError) { payload = { errorType: error.type, toolName, message: error.message, details: error.details, receivedParams, }; } else if (error instanceof AppError) { payload = { errorType: error.type, toolName, message: error.message, receivedParams, }; } else if (error instanceof Error) { payload = { errorType: 'UnhandledError', toolName, message: `An unexpected error occurred: ${error.message}`, receivedParams, }; } else { payload = { errorType: 'UnknownError', toolName, message: 'An unknown error occurred.', receivedParams, }; } logger.error(`[${toolName || 'UnknownTool'}] ${payload.message}`, payload); return { content: [{ type: 'text', text: JSON.stringify(payload, null, 2) }], isError: true, }; }