curl --request GET \
  --url https://mcp.echozero.app/api/auth/username-exists \
  --header 'x-signature: <x-signature>' \
  --header 'x-timestamp: <x-timestamp>'

import requests

url = "https://mcp.echozero.app/api/auth/username-exists"

headers = {
    "x-signature": "<x-signature>",
    "x-timestamp": "<x-timestamp>"
}

response = requests.get(url, headers=headers)

print(response.text)

const options = {
  method: 'GET',
  headers: {'x-signature': '<x-signature>', 'x-timestamp': '<x-timestamp>'}
};

fetch('https://mcp.echozero.app/api/auth/username-exists', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

const options = {
  method: 'GET',
  headers: {'x-signature': '<x-signature>', 'x-timestamp': '<x-timestamp>'}
};

fetch('https://mcp.echozero.app/api/auth/username-exists', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://mcp.echozero.app/api/auth/username-exists"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("x-signature", "<x-signature>")
	req.Header.Add("x-timestamp", "<x-timestamp>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

{
  "success": true,
  "data": {
    "exists": false
  }
}

{
  "success": false,
  "error": {
    "code": "NOT_FOUND",
    "message": "Resource not found"
  }
}