Context Manager MCP Server

import { JSONSchema7 } from 'json-schema'; import { McpError, ErrorCode } from '@modelcontextprotocol/sdk/types.js'; import { Tool, Result } from '../types.js'; import { StateManager } from '../state/manager.js'; export abstract class BaseTool implements Tool { abstract name: string; abstract description: string; abstract inputSchema: JSONSchema7; constructor(protected stateManager: StateManager) {} protected async validateInput(input: any): Promise<void> { // Basic schema validation would go here // In a full implementation, we'd use a JSON Schema validator if (!input || typeof input !== 'object') { throw new McpError( ErrorCode.InvalidParams, 'Invalid input: expected object' ); } // Check required fields from schema if (this.inputSchema.required) { for (const field of this.inputSchema.required) { if (!(field in input)) { throw new McpError( ErrorCode.InvalidParams, `Missing required field: ${field}` ); } } } } abstract execute(input: any): Promise<Result<any>>; async handler(input: any): Promise<Result<any>> { try { await this.validateInput(input); return this.execute(input); } catch (error) { if (error instanceof McpError) { throw error; } return { success: false, error: error instanceof Error ? error.message : String(error) }; } } }