Get Gender by Username - Single Request

The Get Gender by Username endpoint allows you to determine the gender of a person by analyzing a username or nickname. All parameters are sent via a POST request as JSON. You must authenticate using the Bearer token method in the Authorization header.

Request URL

POST https://api.genderapi.io/api/username

Required HTTP Headers

Content-Type: application/json
Authorization: Bearer YOUR_API_KEY

Request Body Parameters

Parameter	Type	Required	Description
username	String	Yes	The username or nickname to analyze. This can be a social media handle, screen name, or alias. May contain non-name words like fantasy terms or brand references.
country	String	No	A two-letter country code (ISO 3166-1 alpha-2) to improve prediction accuracy. Example: `TR` for Turkey.
askToAI	Boolean	No	If set to `true`, the API will ask an AI model to determine the gender if the extracted name cannot be found in the database.
forceToGenderize	Boolean	No	If set to `true`, the API will attempt to guess a gender even for usernames that do not look like real human names, such as fantasy terms or nicknames (e.g. `sparkling_unicorn`).

Example Requests

cURL Example

curl -X POST "https://api.genderapi.io/api/username" \
     -H "Content-Type: application/json" \
     -H "Authorization: Bearer YOUR_API_KEY" \
     -d '{"username": "sparkling_unicorn", "country": "US", "askToAI": true, "forceToGenderize": true}'

PHP cURL Example

<?php
$url = "https://api.genderapi.io/api/username";

$data = array(
    "username" => "sparkling_unicorn",
    "country" => "US",
    "askToAI" => true,
    "forceToGenderize" => true
);

$payload = json_encode($data);

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    "Content-Type: application/json",
    "Authorization: Bearer YOUR_API_KEY"
));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);

$response = curl_exec($ch);
curl_close($ch);

echo $response;
?>

JavaScript fetch Example

fetch("https://api.genderapi.io/api/username", {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    "Authorization": "Bearer YOUR_API_KEY"
  },
  body: JSON.stringify({
    username: "sparkling_unicorn",
    country: "US",
    askToAI: true,
    forceToGenderize: true
  })
})
.then(response => response.json())
.then(data => console.log(data));

Python requests Example

import requests

url = "https://api.genderapi.io/api/username"

payload = {
    "username": "sparkling_unicorn",
    "country": "US",
    "askToAI": True,
    "forceToGenderize": True
}

headers = {
    "Content-Type": "application/json",
    "Authorization": "Bearer YOUR_API_KEY"
}

response = requests.post(url, headers=headers, json=payload)

print(response.json())

Example JSON Response

{
  "status": true,
  "used_credits": 1,
  "remaining_credits": 4999,
  "expires": 1743659200,
  "q": "sparkling_unicorn",
  "name": "Sparkling",
  "gender": "female",
  "country": "US",
  "total_names": 9876,
  "probability": 92,
  "duration": "6ms"
}

Response Fields

Field	Type	Description
status	Boolean	Indicates whether the request was successful.
used_credits	Integer	Number of credits consumed for this request.
remaining_credits	Integer	Credits left in your account after this request.
expires	Integer (timestamp)	Package expiration date as a UNIX timestamp.
q	String	Your input query (the username submitted).
name	String	The extracted first name from the username.
gender	Enum[String]	Predicted gender. Possible values: `male`, `female`, or `null`.
country	String	The country code considered during the prediction.
total_names	Integer	Number of samples used for this prediction.
probability	Integer	Confidence percentage for the gender prediction.
duration	String	Time taken to process the request (e.g. `6ms`).