Messages consist of "parts" (parts): text, model reasoning, tool calls, files, sources. Therefore, the same template shows both the regular answer and the reasoning from Claude or Qwen3, and the tool call. The API key remains on the server. The server part is a regular Web-standard request → response handler that works in Nuxt/Nitro, Node, Bun, Deno, and edge runtimes:// server/api/chat.post.ts (Nuxt) import { createLLMHandler } from 'vue-llm/server' impor