JavaScript / Node.js

Integrate Gender-API.com into your JavaScript applications with our official client library supporting both browser and Node.js environments. Our AI-powered API delivers 99.5% accurate gender detection 10x-90x faster than generic AI models. Perfect for client-side form validation, user personalization, and backend services. The Promise-based API makes integration effortless with async/await support. Unlike ChatGPT or other LLMs, our specialized database contains 37% more names and provides country-specific accuracy. Process names in under 100ms with 99.9% uptime SLA. Ideal for React, Vue, Angular, and Express.js applications. Start free with 100 monthly API calls, no credit card required. Trusted by developers worldwide.

First install our library with composer:

See full client documentation here:

https://github.com/markus-perl/gender-api-client

First install our library with npm:

See full client documentation here:

https://github.com/markus-perl/gender-api-client-npm

First install our library with npm:

npm install gender-api.com-client --save
const { Client } = require('gender-api.com-client');

const client = new Client('your-api-key');

// Simple gender lookup
client.getByFirstName('Theresa').then(result => {
  console.log(`${result.first_name} is ${result.gender} (Probability: ${result.probability}`);
}).catch(error => {
  console.error('Error:', error);
});

// First name with country (e.g., "Andrea" varies by country)
client.getByFirstName('Andrea', { country: 'IT' }).then(result => {
  console.log(`${result.first_name} in Italy is ${result.gender}`);
}).catch(error => {
  console.error('Error:', error);
});

// Full name with automatic first/last name splitting
client.getByFullName('John Smith').then(result => {
  console.log(`${result.first_name} ${result.last_name} is ${result.gender}`);
}).catch(error => {
  console.error('Error:', error);
});

// Email address analysis
client.getByEmailAddress('marie.curie@example.com').then(result => {
  console.log(`Email gender: ${result.gender}`);
}).catch(error => {
  console.error('Error:', error);
});

// Batch processing - multiple names in one call
const names = [
  { id: '1', first_name: 'Theresa', country: 'US' },
  { id: '2', first_name: 'John', country: 'US' }
];

client.getByFirstNameMultiple(names).then(results => {
  results.forEach(r => {
    console.log(`ID: ${r.input.id}, Gender: ${r.gender}`);
  });
}).catch(error => {
  console.error('Error:', error);
});

// Account statistics
client.getStatistics().then(stats => {
  console.log(`Credits Remaining: ${stats.remaining_credits}`);
}).catch(error => {
  console.error('Error:', error);
});

See full client documentation here:

https://github.com/markus-perl/gender-api-client-npm

First install our library with pip:

See full client documentation here:

https://github.com/markus-perl/gender-api-client-python
https://pypi.org/project/gender-api-client/

Professional Gender Detection for Your Applications

Gender-API.com delivers enterprise-grade gender detection with 99.5% accuracy across 150+ countries. Our specialized API outperforms generic AI solutions with 10x-90x faster response times and 9-34% better accuracy.

Why Choose Gender-API Over Generic AI?

  • Purpose-Built : Specialized for gender detection, not a general-purpose AI
  • Lightning Fast : Sub-100ms response times vs. seconds for generic AI
  • More Accurate : 99.5% accuracy with cultural and regional intelligence
  • Larger Database : 9+ million names, 37% more than typical AI training data
  • Reliable : 99.9% uptime SLA with predictable performance

Key Features

  • Easy integration with just a few lines of code
  • Batch processing for high-volume applications
  • Country-specific accuracy for regional name variations
  • Smart normalization handling typos and variants
  • GDPR compliant and enterprise-ready

Start Free Today

Get 100 free API calls per month with no credit card required. Scale as you grow with flexible pricing for every use case.

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