AI Context - Phân Tích Kỹ Thuật cho LLM

import vnstock from 'vnstock-js';

const ctx = await vnstock.stock.aiContext('VCB');

console.log(ctx.trend);
// { direction: "bullish", strength: 0.72, rationale: "EMA20 > EMA50 > EMA200, slope EMA20 dương 5 phiên" }

console.log(ctx.indicators.rsi14);   // 62.3
console.log(ctx.indicators.macd);    // { line, signal, histogram, crossover }
console.log(ctx.levels.support);     // [56.5, 54.2, 52.0]
console.log(ctx.levels.resistance);  // [60.0, 62.5, 64.0]
console.log(ctx.volume.signal);      // "above_average"
console.log(ctx.performance);        // { change1d: 0.0017, change30d: 0.058, ... }

await vnstock.stock.aiContext('VCB', { lookback: 200 }); // default 200 phiên

const text = await vnstock.stock.toAIPrompt('VCB', { lang: 'vi' });
console.log(text);

=== VCB — 2026-05-22 ===
Trend: bullish (strength 72%) — EMA20 > EMA50 > EMA200, slope EMA20 dương 5 phiên
RSI(14): 62.3
MACD: line 0.420, signal 0.310, histogram 0.110, crossover: bullish
SMA: 20=58.40, 50=56.10, 200=52.80
EMA: 20=58.90, 50=56.50, 200=52.60
Bollinger %B: 0.62 (upper=61.20, lower=55.60)
ATR(14): 1.340
Volume: 5,550,000 (avg 4,120,000, z-score 1.85, above_average)
Support: 56.50 / 54.20 / 52.00
Resistance: 60.00 / 62.50 / 64.00
Change: 1d +0.17% · 7d +2.34% · 30d +5.80% · 90d +14.20%

await vnstock.stock.toAIPrompt('VCB', { lang: 'en' }); // English version
await vnstock.stock.toAIPrompt('VCB', { lookback: 100 });

import vnstock from 'vnstock-js';
import { Anthropic } from '@anthropic-ai/sdk';

const text = await vnstock.stock.toAIPrompt('VCB');

const client = new Anthropic();
const response = await client.messages.create({
  model: 'claude-opus-4-7',
  max_tokens: 1024,
  messages: [
    {
      role: 'user',
      content: `Phân tích VCB dựa trên context sau và đưa ra nhận định kỹ thuật:\n\n${text}`,
    },
  ],
});