Watson Natural Language Understanding API

// Perform text analysis
const text = 'This is an amazing product! I love it.';
const response = await fetch('https://cloud.ibm.com/apidocs/natural-language-understanding/natural-language-understanding', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer YOUR_ACCESS_TOKEN'
  },
  body: JSON.stringify({ text })
});
const result = await response.json();
console.log('Sentiment:', result.sentiment || result.score || result);

// Extract key phrases and entities
const headers = { 'Authorization': 'Bearer YOUR_ACCESS_TOKEN' };
const text = 'JavaScript is a popular programming language for web development.';
const response = await fetch('https://cloud.ibm.com/apidocs/natural-language-understanding/natural-language-understanding', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer YOUR_ACCESS_TOKEN'
  },
  body: JSON.stringify({ text })
});
const data = await response.json();
console.log('Keywords:', data.keywords || data.entities || data);

// Summarize long text
const headers = { 'Authorization': 'Bearer YOUR_ACCESS_TOKEN' };
const longText = 'Your long article text goes here...';
const response = await fetch('https://cloud.ibm.com/apidocs/natural-language-understanding/natural-language-understanding', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer YOUR_ACCESS_TOKEN'
  },
  body: JSON.stringify({ text: longText })
});
const result = await response.json();
console.log('Summary:', result.summary || result.text || result);