YetiBrowser MCP

import { Server } from "@modelcontextprotocol/sdk/server/index.js"; import { CallToolRequestSchema, ListResourcesRequestSchema, ListToolsRequestSchema, ReadResourceRequestSchema, } from "@modelcontextprotocol/sdk/types.js"; import type { ToolResponse } from "@yetidevworks/shared"; import { ExtensionBridge } from "./bridge.js"; import { ExtensionContext } from "./context.js"; import { createTools, type Tool } from "./tools.js"; export interface CreateMcpServerOptions { name: string; version: string; bridge: ExtensionBridge; } export async function createMcpServer(options: CreateMcpServerOptions): Promise<Server> { const { name, version, bridge } = options; const context = new ExtensionContext(bridge); const tools = createTools(); const server = new Server( { name, version }, { capabilities: { tools: {}, resources: {}, }, }, ); server.setRequestHandler(ListToolsRequestSchema, async () => { return { tools: tools.map((tool) => tool.schema), }; }); server.setRequestHandler(ListResourcesRequestSchema, async () => { return { resources: [] }; }); server.setRequestHandler(CallToolRequestSchema, async (request) => { const tool = tools.find((candidate) => candidate.schema.name === request.params.name); if (!tool) { const response: ToolResponse = { content: [ { type: "text", text: `Tool "${request.params.name}" not found`, }, ], isError: true, }; return response as unknown as Record<string, unknown>; } try { const result = await tool.handle(context, request.params.arguments ?? {}); return result as unknown as Record<string, unknown>; } catch (error) { const message = error instanceof Error ? error.message : String(error); const response: ToolResponse = { content: [ { type: "text", text: message, }, ], isError: true, }; return response as unknown as Record<string, unknown>; } }); server.setRequestHandler(ReadResourceRequestSchema, async () => ({ contents: [] })); return server; }