curl --request POST \
  --url https://metadata.sequence.app/rpc/Metadata/DirectoryGetNetworks \
  --header 'Content-Type: application/json' \
  --header 'X-Access-Key: <api-key>' \
  --data '
{
  "includeTestnets": true,
  "onlyFeatured": false
}
'

import requests

url = "https://metadata.sequence.app/rpc/Metadata/DirectoryGetNetworks"

payload = {
    "includeTestnets": True,
    "onlyFeatured": False
}
headers = {
    "X-Access-Key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'X-Access-Key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({includeTestnets: true, onlyFeatured: false})
};

fetch('https://metadata.sequence.app/rpc/Metadata/DirectoryGetNetworks', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://metadata.sequence.app/rpc/Metadata/DirectoryGetNetworks",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'includeTestnets' => true,
    'onlyFeatured' => false
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-Access-Key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://metadata.sequence.app/rpc/Metadata/DirectoryGetNetworks"

	payload := strings.NewReader("{\n  \"includeTestnets\": true,\n  \"onlyFeatured\": false\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("X-Access-Key", "<api-key>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://metadata.sequence.app/rpc/Metadata/DirectoryGetNetworks")
  .header("X-Access-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"includeTestnets\": true,\n  \"onlyFeatured\": false\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://metadata.sequence.app/rpc/Metadata/DirectoryGetNetworks")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["X-Access-Key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"includeTestnets\": true,\n  \"onlyFeatured\": false\n}"

response = http.request(request)
puts response.read_body

{
  "networks": [
    84532,
    19011,
    42161,
    168587773,
    43114,
    42170,
    10,
    37714555429,
    21000000,
    100,
    11155111,
    8453,
    137,
    1946,
    1993,
    80002,
    97,
    40875,
    43113,
    1,
    37084624,
    5,
    80001,
    3776,
    6038361,
    660279,
    421614,
    33111,
    1101,
    33139,
    56
  ]
}

{
  "error": "WebrpcEndpoint",
  "code": 0,
  "msg": "endpoint error",
  "status": 400,
  "cause": "<string>"
}

{
  "error": "WebrpcBadResponse",
  "code": -5,
  "msg": "bad response",
  "status": 500,
  "cause": "<string>"
}