curl --request POST \
  --url https://router-api.initia.xyz/v2/fungible/msgs \
  --header 'Content-Type: application/json' \
  --data '
{
  "amount_in": "1000000",
  "amount_out": "999000",
  "source_asset_chain_id": "interwoven-1",
  "source_asset_denom": "uinit",
  "dest_asset_chain_id": "8453",
  "dest_asset_denom": "0x...",
  "address_list": [
    "init1abc...",
    "0xdef..."
  ],
  "operations": [],
  "slippage_tolerance_percent": "1"
}
'

import requests

url = "https://router-api.initia.xyz/v2/fungible/msgs"

payload = {
    "amount_in": "1000000",
    "amount_out": "999000",
    "source_asset_chain_id": "interwoven-1",
    "source_asset_denom": "uinit",
    "dest_asset_chain_id": "8453",
    "dest_asset_denom": "0x...",
    "address_list": ["init1abc...", "0xdef..."],
    "operations": [],
    "slippage_tolerance_percent": "1"
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    amount_in: '1000000',
    amount_out: '999000',
    source_asset_chain_id: 'interwoven-1',
    source_asset_denom: 'uinit',
    dest_asset_chain_id: '8453',
    dest_asset_denom: '0x...',
    address_list: ['init1abc...', '0xdef...'],
    operations: [],
    slippage_tolerance_percent: '1'
  })
};

fetch('https://router-api.initia.xyz/v2/fungible/msgs', 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://router-api.initia.xyz/v2/fungible/msgs",
  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([
    'amount_in' => '1000000',
    'amount_out' => '999000',
    'source_asset_chain_id' => 'interwoven-1',
    'source_asset_denom' => 'uinit',
    'dest_asset_chain_id' => '8453',
    'dest_asset_denom' => '0x...',
    'address_list' => [
        'init1abc...',
        '0xdef...'
    ],
    'operations' => [
        
    ],
    'slippage_tolerance_percent' => '1'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($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://router-api.initia.xyz/v2/fungible/msgs"

	payload := strings.NewReader("{\n  \"amount_in\": \"1000000\",\n  \"amount_out\": \"999000\",\n  \"source_asset_chain_id\": \"interwoven-1\",\n  \"source_asset_denom\": \"uinit\",\n  \"dest_asset_chain_id\": \"8453\",\n  \"dest_asset_denom\": \"0x...\",\n  \"address_list\": [\n    \"init1abc...\",\n    \"0xdef...\"\n  ],\n  \"operations\": [],\n  \"slippage_tolerance_percent\": \"1\"\n}")

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

	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://router-api.initia.xyz/v2/fungible/msgs")
  .header("Content-Type", "application/json")
  .body("{\n  \"amount_in\": \"1000000\",\n  \"amount_out\": \"999000\",\n  \"source_asset_chain_id\": \"interwoven-1\",\n  \"source_asset_denom\": \"uinit\",\n  \"dest_asset_chain_id\": \"8453\",\n  \"dest_asset_denom\": \"0x...\",\n  \"address_list\": [\n    \"init1abc...\",\n    \"0xdef...\"\n  ],\n  \"operations\": [],\n  \"slippage_tolerance_percent\": \"1\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://router-api.initia.xyz/v2/fungible/msgs")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"amount_in\": \"1000000\",\n  \"amount_out\": \"999000\",\n  \"source_asset_chain_id\": \"interwoven-1\",\n  \"source_asset_denom\": \"uinit\",\n  \"dest_asset_chain_id\": \"8453\",\n  \"dest_asset_denom\": \"0x...\",\n  \"address_list\": [\n    \"init1abc...\",\n    \"0xdef...\"\n  ],\n  \"operations\": [],\n  \"slippage_tolerance_percent\": \"1\"\n}"

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

{
  "txs": [
    {
      "cosmos_tx": {
        "chain_id": "interwoven-1",
        "msgs": [],
        "signer_address": "init1abc..."
      }
    }
  ]
}