Vercel AI SDK

/** * Vercel AI SDK with Boxline: Boxline's web search and page fetch as AI SDK tools. The model (your own OpenAI key) * decides when to search and which pages to read; each page renders in a real browser inside a Boxline sandbox. * *   npm install && npx tsx index.ts        (BOXLINE_API_KEY and OPENAI_API_KEY in the environment; AI_MODEL, QUESTION) * * Writes output/result.json: the answer and every tool call. */import { mkdirSync, writeFileSync } from "node:fs";import { join } from "node:path";import { openai } from "@ai-sdk/openai";import { Boxline } from "@boxline/sdk";import { generateText, isStepCount, tool } from "ai";import { z } from "zod";const out = process.env.OUTPUT_DIR ?? "output";const question = process.env.QUESTION ?? 'On books.toscrape.com, what does "Sapiens: A Brief History of Humankind" cost, and how many are in stock?';const bx = new Boxline();const tools = {  boxline_search: tool({    description: "Search the web. Returns titles, addresses and snippets.",    inputSchema: z.object({ query: z.string(), limit: z.number().int().min(1).max(10).optional() }),    execute: async ({ query, limit }) => (await bx.search({ query, limit: limit ?? 5 })).results.map(({ title, url, snippet }) => ({ title, url, snippet })),  }),  boxline_fetch: tool({    description: "Open a web page in a real browser and return it as Markdown, with the absolute addresses of its links.",    inputSchema: z.object({ url: z.string().url() }),    execute: async ({ url }) => {      const page = await bx.fetch(url, { format: "markdown", links: true });      return { url: page.finalUrl, status: page.status, title: page.title, content: page.content.slice(0, 12_000), links: (page.links ?? []).slice(0, 80) };    },  }),};const result = await generateText({  model: openai(process.env.AI_MODEL ?? "gpt-6-luna"),  tools,  stopWhen: isStepCount(8),  system: "Answer from the pages you read with the tools, and say which page the answer came from.",  prompt: question,});const calls = result.steps.flatMap((s) => s.toolCalls.map((c) => ({ tool: c.toolName, input: c.input })));for (const c of calls) console.log(`→ ${c.tool} ${JSON.stringify(c.input)}`);console.log(`\n${result.text}`);mkdirSync(out, { recursive: true });writeFileSync(  join(out, "result.json"),  JSON.stringify({ question, answer: result.text, calls, steps: result.steps.length, usage: { ownModelTokens: result.totalUsage.totalTokens ?? 0 } }, null, 2),);

# Node 22 or newerexport BOXLINE_API_KEY=…        # your Boxline API keyexport OPENAI_API_KEY=…         # your own OpenAI keynpm install @ai-sdk/openai@4.0.81 @boxline/sdk ai@7.0.122 tsx@4.23.15 zod@4.4.3npx tsx index.ts