import { McpServer, type Tool } from 'mcp-on-workers'

const hello: Tool<null> = {
  name: 'hello', title: 'Say hello', description: 'Greets someone.',
  inputSchema: { type: 'object', properties: { name: { type: 'string', maxLength: 40 } }, required: ['name'], additionalProperties: false },
  async run(args) { return { content: [{ type: 'text', text: `Hello, ${args.name}!` }] } },
}

export default {
  async fetch(request: Request, env: { SESSION_SECRET: string }) {
    return new McpServer<null>({
      info: { name: 'hello', title: 'Hello', version: '1.0.0' },
      tools: [hello],
      secret: env.SESSION_SECRET,
      allowOrigin: (origin) => origin === 'https://my-site.example',
      context: async () => null,
    }).handle(request)
  },
}

npm install
npm test