Java Client

Enterprise-ready Java client for Gender-API.com providing robust, type-safe gender detection for your production applications. Our specialized API delivers 99.5% accuracy with sub-100ms response times, significantly outperforming generic AI solutions. Built for scalability with proper error handling, connection pooling, and thread safety. Perfect for Spring Boot, Jakarta EE, and microservices architectures. Unlike generic LLMs, our database is specifically tuned for name-gender associations across 150+ countries with continuous learning adding thousands of names daily. Ideal for CRM systems, user management, and marketing platforms. Start free with 100 monthly API calls and scale to millions. Trusted by Fortune 500 companies 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:

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/ 

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.io.IOException;
import com.google.gson.Gson;
import com.google.gson.JsonObject;

public class Main {

    public static void main(String[] args) {
        String apiKey = "YOUR_API_KEY";
        String url = "https://gender-api.com/v2/gender/by-first-name";
        String payload = "{\"first_name\":\"Theresa\"}";

        HttpClient client = HttpClient.newHttpClient();

        HttpRequest request = HttpRequest.newBuilder()
                .uri(URI.create(url))
                .header("Content-Type", "application/json")
                .header("Authorization", "Bearer " + apiKey)
                .POST(HttpRequest.BodyPublishers.ofString(payload))
                .build();

        try {
            HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());

            Gson gson = new Gson();
            JsonObject json = gson.fromJson(response.body(), JsonObject.class);

            System.out.println("Gender: " + json.get("gender").getAsString());
            System.out.println("Probability: " + json.get("probability").getAsFloat());

        } catch (IOException | InterruptedException e) {
            e.printStackTrace();
        }
    }
}

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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