const url = 'https://api.openfx.com/v2/brokerage/{orgId}/trade/reverse-quote';
const options = {
  method: 'POST',
  headers: {
    'Idempotency-Key': '<idempotency-key>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({tradeId: '123e4567-e89b-42d3-a456-426614174000', quoteForSeconds: 30})
};

fetch(url, options)
  .then(res => res.json())
  .then(json => console.log(json))
  .catch(err => console.error(err));

import requests

url = "https://api.openfx.com/v2/brokerage/{orgId}/trade/reverse-quote"

payload = {
    "tradeId": "123e4567-e89b-42d3-a456-426614174000",
    "quoteForSeconds": 30
}
headers = {
    "Idempotency-Key": "<idempotency-key>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

HttpResponse<String> response = Unirest.post("https://api.openfx.com/v2/brokerage/{orgId}/trade/reverse-quote")
  .header("Idempotency-Key", "<idempotency-key>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"tradeId\": \"123e4567-e89b-42d3-a456-426614174000\",\n  \"quoteForSeconds\": 30\n}")
  .asString();

CURL *hnd = curl_easy_init();

curl_easy_setopt(hnd, CURLOPT_CUSTOMREQUEST, "POST");
curl_easy_setopt(hnd, CURLOPT_WRITEDATA, stdout);
curl_easy_setopt(hnd, CURLOPT_URL, "https://api.openfx.com/v2/brokerage/{orgId}/trade/reverse-quote");

struct curl_slist *headers = NULL;
headers = curl_slist_append(headers, "Idempotency-Key: <idempotency-key>");
headers = curl_slist_append(headers, "Authorization: Bearer <token>");
headers = curl_slist_append(headers, "Content-Type: application/json");
curl_easy_setopt(hnd, CURLOPT_HTTPHEADER, headers);

curl_easy_setopt(hnd, CURLOPT_POSTFIELDS, "{\n  \"tradeId\": \"123e4567-e89b-42d3-a456-426614174000\",\n  \"quoteForSeconds\": 30\n}");

CURLcode ret = curl_easy_perform(hnd);

package main

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

func main() {

	url := "https://api.openfx.com/v2/brokerage/{orgId}/trade/reverse-quote"

	payload := strings.NewReader("{\n  \"tradeId\": \"123e4567-e89b-42d3-a456-426614174000\",\n  \"quoteForSeconds\": 30\n}")

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

	req.Header.Add("Idempotency-Key", "<idempotency-key>")
	req.Header.Add("Authorization", "Bearer <token>")
	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))

}

curl --request POST \
  --url https://api.openfx.com/v2/brokerage/{orgId}/trade/reverse-quote \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --data '
{
  "tradeId": "123e4567-e89b-42d3-a456-426614174000",
  "quoteForSeconds": 30
}
'

{
  "status": "success",
  "message": "Reverse quote generated successfully",
  "data": {
    "quote": {
      "id": "223e4567-e89b-42d3-a456-426614174000",
      "buy": "USD",
      "sell": "USDC",
      "buyAmount": 999.5,
      "sellAmount": 1000,
      "quoteAmount": 999.5,
      "createdAt": "2026-07-13T10:00:00.000Z",
      "expiresAt": "2026-07-13T10:00:30.000Z",
      "reversalDetails": {
        "direction": "DEBIT",
        "differentialAmount": 0.75,
        "currency": "USD"
      }
    }
  }
}

{
  "status": "error",
  "message": "Query validation failed"
}

{
  "status": "error",
  "message": "The authorization key provided is either invalid or expired, please try again"
}

{
  "status": "error",
  "message": "Trade not found",
  "error": {
    "code": "TRADE_NOT_FOUND"
  }
}

{
  "status": "error",
  "message": "Request with this idempotency key is currently processing",
  "error": {
    "code": "IDEMPOTENCY_IN_FLIGHT",
    "details": "Please wait for the original request to complete"
  }
}

{
  "status": "error",
  "message": "Idempotency key reused with different parameters",
  "error": {
    "code": "IDEMPOTENCY_MISMATCH",
    "details": "This idempotency key was already used with different request parameters"
  }
}

{
  "status": "error",
  "message": "Something went wrong, please try again later"
}