Serve llms.txt from Worker at GET /llms.txt

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: wh4u

src/index.ts

@@ -1,6 +1,7 @@
 import { createMcpHandler } from "agents/mcp";
 import { createServer } from "./mcp/server.js";
 import type { Env } from "./types.js";
+import { LLMS_TXT_CONTENT } from "./llms-txt.js";
 
 export { RateLimiter } from "./storage/rate-limiter.js";
 
@@ -10,6 +11,13 @@ export default {
     env: Env,
     ctx: ExecutionContext,
   ): Promise<Response> => {
+    const url = new URL(request.url);
+    if (request.method === "GET" && url.pathname === "/llms.txt") {
+      return new Response(LLMS_TXT_CONTENT, {
+        headers: { "Content-Type": "text/plain; charset=utf-8" },
+      });
+    }
+
     const server = createServer(env, ctx);
     const handler = createMcpHandler(server, {
       corsOptions: {

src/llms-txt.ts

@@ -0,0 +1,30 @@
+/**
+ * Content for GET /llms.txt. Keep in sync with repo root llms.txt.
+ */
+export const LLMS_TXT_CONTENT = `# DomainsReseller MCP Server
+
+> MCP server for managing domain names from your IDE using natural language. Built for the Webhosting4U domain registrar.
+
+## Overview
+
+Production-ready Model Context Protocol (MCP) server that exposes 32 tools for domain management: registration, transfer, renewal, DNS, nameservers, WHOIS contacts, lock, email forwarding, pricing, and credits. Runs on Cloudflare Workers. Designed for use with VS Code, Cursor, or any MCP-compatible IDE.
+
+## How to use
+
+- Endpoint: https://mcp-domains.webhosting4u.gr/mcp
+- Transport: Streamable HTTP
+- Auth: Call auth_login with email and DomainsReseller API key; receive a session token valid 12 hours. Use the session_token for all other tool calls.
+- Prerequisites: Domain Reseller account and API key from Webhosting4U; credits required for register/transfer/renew.
+
+## Key links
+
+- Repository: https://github.com/Webhosting4U/Domain-Names-MCP-Server
+- Setup guide: https://github.com/Webhosting4U/Domain-Names-MCP-Server/blob/main/docs/CLIENT_SETUP.md
+- Webhosting4U: https://webhosting4u.gr
+- Domain Reseller signup: https://webhosting4u.gr/customers/index.php?rp=/store/webhosting/domain-reseller
+- MCP protocol: https://modelcontextprotocol.io/
+
+## Tech
+
+TypeScript, Cloudflare Workers, Workers KV, D1, Durable Objects, MCP Streamable HTTP, Zod. API keys encrypted at rest (AES-256-GCM). AGPL-3.0.
+`;