Frontapp MCP Server

import { ToolArguments, ToolResponse } from '../../models/mcp.js'; /** * Base interface for all request handlers * This provides a consistent structure for handling MCP tool requests */ export interface RequestHandler<T extends ToolArguments> { /** * Handle a request from the LLM * @param args The arguments passed to the tool * @returns A response to send back to the LLM */ handle(args: T): Promise<ToolResponse>; } /** * Base class for all request handlers * Implements common functionality for request handlers */ export abstract class BaseRequestHandler<T extends ToolArguments> implements RequestHandler<T> { /** * Validate the arguments passed to the tool * @param args The arguments to validate * @throws Error if the arguments are invalid */ protected abstract validateArgs(args: T): void; /** * Execute the request * @param args The validated arguments * @returns A response to send back to the LLM */ protected abstract execute(args: T): Promise<ToolResponse>; /** * Handle a request from the LLM * This method validates the arguments and then executes the request * @param args The arguments passed to the tool * @returns A response to send back to the LLM */ async handle(args: T): Promise<ToolResponse> { try { // Validate the arguments this.validateArgs(args); // Execute the request return await this.execute(args); } catch (error: any) { // Return an error response return { content: [ { type: 'text', text: `Error: ${error.message}`, }, ], isError: true, }; } } /** * Create a success response * @param data The data to include in the response * @returns A success response */ protected createSuccessResponse(data: any): ToolResponse { return { content: [ { type: 'json', text: JSON.stringify(data, null, 2), }, ], }; } /** * Create an error response * @param message The error message * @returns An error response */ protected createErrorResponse(message: string): ToolResponse { return { content: [ { type: 'text', text: `Error: ${message}`, }, ], isError: true, }; } }