curl --request POST \
  --url https://api.sequence.app/rpc/API/GetSwapQuote \
  --header 'Content-Type: application/json' \
  --header 'X-Access-Key: <api-key>' \
  --data '
{
  "userAddress": "0x1fEA9Fcbd1989C0f2D0Fbad08144c528c7F5ea54",
  "sellCurrencyAddress": "0x1c7d4b196cb0c7b01d743fbc6116a902379c7238",
  "buyCurrencyAddress": "0x50ba9d89fbfa2862d0447281219a3058e7724224",
  "buyAmount": "1000000000000000000",
  "chainId": 11155111,
  "includeApprove": true
}
'

import requests

url = "https://api.sequence.app/rpc/API/GetSwapQuote"

payload = {
    "userAddress": "0x1fEA9Fcbd1989C0f2D0Fbad08144c528c7F5ea54",
    "sellCurrencyAddress": "0x1c7d4b196cb0c7b01d743fbc6116a902379c7238",
    "buyCurrencyAddress": "0x50ba9d89fbfa2862d0447281219a3058e7724224",
    "buyAmount": "1000000000000000000",
    "chainId": 11155111,
    "includeApprove": True
}
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({
    userAddress: '0x1fEA9Fcbd1989C0f2D0Fbad08144c528c7F5ea54',
    sellCurrencyAddress: '0x1c7d4b196cb0c7b01d743fbc6116a902379c7238',
    buyCurrencyAddress: '0x50ba9d89fbfa2862d0447281219a3058e7724224',
    buyAmount: '1000000000000000000',
    chainId: 11155111,
    includeApprove: true
  })
};

fetch('https://api.sequence.app/rpc/API/GetSwapQuote', 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://api.sequence.app/rpc/API/GetSwapQuote",
  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([
    'userAddress' => '0x1fEA9Fcbd1989C0f2D0Fbad08144c528c7F5ea54',
    'sellCurrencyAddress' => '0x1c7d4b196cb0c7b01d743fbc6116a902379c7238',
    'buyCurrencyAddress' => '0x50ba9d89fbfa2862d0447281219a3058e7724224',
    'buyAmount' => '1000000000000000000',
    'chainId' => 11155111,
    'includeApprove' => true
  ]),
  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://api.sequence.app/rpc/API/GetSwapQuote"

	payload := strings.NewReader("{\n  \"userAddress\": \"0x1fEA9Fcbd1989C0f2D0Fbad08144c528c7F5ea54\",\n  \"sellCurrencyAddress\": \"0x1c7d4b196cb0c7b01d743fbc6116a902379c7238\",\n  \"buyCurrencyAddress\": \"0x50ba9d89fbfa2862d0447281219a3058e7724224\",\n  \"buyAmount\": \"1000000000000000000\",\n  \"chainId\": 11155111,\n  \"includeApprove\": true\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://api.sequence.app/rpc/API/GetSwapQuote")
  .header("X-Access-Key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"userAddress\": \"0x1fEA9Fcbd1989C0f2D0Fbad08144c528c7F5ea54\",\n  \"sellCurrencyAddress\": \"0x1c7d4b196cb0c7b01d743fbc6116a902379c7238\",\n  \"buyCurrencyAddress\": \"0x50ba9d89fbfa2862d0447281219a3058e7724224\",\n  \"buyAmount\": \"1000000000000000000\",\n  \"chainId\": 11155111,\n  \"includeApprove\": true\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.sequence.app/rpc/API/GetSwapQuote")

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  \"userAddress\": \"0x1fEA9Fcbd1989C0f2D0Fbad08144c528c7F5ea54\",\n  \"sellCurrencyAddress\": \"0x1c7d4b196cb0c7b01d743fbc6116a902379c7238\",\n  \"buyCurrencyAddress\": \"0x50ba9d89fbfa2862d0447281219a3058e7724224\",\n  \"buyAmount\": \"1000000000000000000\",\n  \"chainId\": 11155111,\n  \"includeApprove\": true\n}"

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

{
  "swapQuote": {
    "currencyAddress": "<string>",
    "currencyBalance": "<string>",
    "price": "<string>",
    "maxPrice": "<string>",
    "to": "<string>",
    "transactionData": "<string>",
    "transactionValue": "<string>",
    "approveData": "<string>"
  }
}

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

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