Grounding chatbots with live data

import Anthropic from "@anthropic-ai/sdk";

const claude = new Anthropic();

async function search(q: string) {
  const r = await fetch("https://api.siftq.com/v1/search", {
    method: "POST",
    headers: {
      Authorization: `Bearer ${process.env.SIFTQ_API_KEY}`,
      "Content-Type": "application/json",
    },
    body: JSON.stringify({ q, scope: "webpage", size: "5", conciseSnippet: true }),
  });
  const { webpages = [] } = await r.json();
  return webpages;
}

export async function answer(userMessage: string) {
  const hits = await search(userMessage);
  const sources = hits
    .map((h: any, i: number) => `[${i + 1}] ${h.title}\n${h.snippet}\nSource: ${h.link}`)
    .join("\n\n");

  return claude.messages.stream({
    model: "claude-sonnet-4-6",
    max_tokens: 1024,
    system:
      "Answer ONLY from the SOURCES. Cite as [N]. If sources don't contain the answer, say so.",
    messages: [
      { role: "user", content: `SOURCES:\n${sources}\n\nQUESTION: ${userMessage}` },
    ],
  });
}