perplexity-hello-world

# Perplexity Hello World ## Overview Minimal working example demonstrating Perplexity's core value: web-grounded answers with citations. Unlike standard LLMs, Perplexity searches the web for every query and returns cited sources. ## Prerequisites - Completed `perplexity-install-auth` setup - `openai` package installed - `PERPLEXITY_API_KEY` environment variable set ## Instructions ### Step 1: Basic Search with Citations (TypeScript) ```typescript import OpenAI from "openai"; const client = new OpenAI({ apiKey: process.env.PERPLEXITY_API_KEY, baseURL: "https://api.perplexity.ai", }); async function main() { const response = await client.chat.completions.create({ model: "sonar", messages: [ { role: "system", content: "Be precise and cite your sources.", }, { role: "user", content: "What are the latest features in Node.js 22?", }, ], }); const answer = response.choices[0].message.content; console.log("Answer:", answer); // Citations are returned as a top-level array on the response const citations = (response as any).citations || []; console.log("\nSources:"); citations.forEach((url: string, i: number) => { console.log(` [${i + 1}] ${url}`); }); // Usage breakdown console.log("\nUsage:", { prompt_tokens: response.usage?.prompt_tokens, completion_tokens: response.usage?.completion_tokens, total_tokens: response.usage?.total_tokens, }); } main().catch(console....