Simulate a card authorization
curl --request POST \
--url https://api-dev.rain.xyz/v1/simulate/transactions/authorize \
--header 'Api-Key: <api-key>' \
--header 'Content-Type: application/json' \
--data '
{
"cardId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"amount": 2,
"currency": "<string>",
"merchantName": "<string>",
"merchantCategoryCode": "<string>"
}
'import requests
url = "https://api-dev.rain.xyz/v1/simulate/transactions/authorize"
payload = {
"cardId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"amount": 2,
"currency": "<string>",
"merchantName": "<string>",
"merchantCategoryCode": "<string>"
}
headers = {
"Api-Key": "<api-key>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'Api-Key': '<api-key>', 'Content-Type': 'application/json'},
body: JSON.stringify({
cardId: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
amount: 2,
currency: '<string>',
merchantName: '<string>',
merchantCategoryCode: '<string>'
})
};
fetch('https://api-dev.rain.xyz/v1/simulate/transactions/authorize', 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-dev.rain.xyz/v1/simulate/transactions/authorize",
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([
'cardId' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
'amount' => 2,
'currency' => '<string>',
'merchantName' => '<string>',
'merchantCategoryCode' => '<string>'
]),
CURLOPT_HTTPHEADER => [
"Api-Key: <api-key>",
"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://api-dev.rain.xyz/v1/simulate/transactions/authorize"
payload := strings.NewReader("{\n \"cardId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"amount\": 2,\n \"currency\": \"<string>\",\n \"merchantName\": \"<string>\",\n \"merchantCategoryCode\": \"<string>\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Api-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-dev.rain.xyz/v1/simulate/transactions/authorize")
.header("Api-Key", "<api-key>")
.header("Content-Type", "application/json")
.body("{\n \"cardId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"amount\": 2,\n \"currency\": \"<string>\",\n \"merchantName\": \"<string>\",\n \"merchantCategoryCode\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api-dev.rain.xyz/v1/simulate/transactions/authorize")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Api-Key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"cardId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"amount\": 2,\n \"currency\": \"<string>\",\n \"merchantName\": \"<string>\",\n \"merchantCategoryCode\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"transactionId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"status": "authorized",
"declinedReason": "<string>",
"completionReason": "settlement"
}Simulations
Simulate a card authorization
Triggers a card authorization against a real card, exactly as if a merchant had initiated it. Use this to test authorization flows, webhook handling, and decline scenarios end-to-end.
Sandbox only. This endpoint returns 404 Not Found in production environments.
POST
/
simulate
/
transactions
/
authorize
Simulate a card authorization
curl --request POST \
--url https://api-dev.rain.xyz/v1/simulate/transactions/authorize \
--header 'Api-Key: <api-key>' \
--header 'Content-Type: application/json' \
--data '
{
"cardId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"amount": 2,
"currency": "<string>",
"merchantName": "<string>",
"merchantCategoryCode": "<string>"
}
'import requests
url = "https://api-dev.rain.xyz/v1/simulate/transactions/authorize"
payload = {
"cardId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"amount": 2,
"currency": "<string>",
"merchantName": "<string>",
"merchantCategoryCode": "<string>"
}
headers = {
"Api-Key": "<api-key>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'Api-Key': '<api-key>', 'Content-Type': 'application/json'},
body: JSON.stringify({
cardId: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
amount: 2,
currency: '<string>',
merchantName: '<string>',
merchantCategoryCode: '<string>'
})
};
fetch('https://api-dev.rain.xyz/v1/simulate/transactions/authorize', 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-dev.rain.xyz/v1/simulate/transactions/authorize",
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([
'cardId' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
'amount' => 2,
'currency' => '<string>',
'merchantName' => '<string>',
'merchantCategoryCode' => '<string>'
]),
CURLOPT_HTTPHEADER => [
"Api-Key: <api-key>",
"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://api-dev.rain.xyz/v1/simulate/transactions/authorize"
payload := strings.NewReader("{\n \"cardId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"amount\": 2,\n \"currency\": \"<string>\",\n \"merchantName\": \"<string>\",\n \"merchantCategoryCode\": \"<string>\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Api-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-dev.rain.xyz/v1/simulate/transactions/authorize")
.header("Api-Key", "<api-key>")
.header("Content-Type", "application/json")
.body("{\n \"cardId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"amount\": 2,\n \"currency\": \"<string>\",\n \"merchantName\": \"<string>\",\n \"merchantCategoryCode\": \"<string>\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api-dev.rain.xyz/v1/simulate/transactions/authorize")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Api-Key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"cardId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"amount\": 2,\n \"currency\": \"<string>\",\n \"merchantName\": \"<string>\",\n \"merchantCategoryCode\": \"<string>\"\n}"
response = http.request(request)
puts response.read_body{
"transactionId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"status": "authorized",
"declinedReason": "<string>",
"completionReason": "settlement"
}Authorizations
Body
application/json
Card authorization simulation request
The Rain card ID to authorize against. Must belong to the calling tenant.
The transaction amount in cents (merchant currency). Must be a positive integer.
Required range:
x >= 1The merchant currency code (for example, USD, EUR, GBP).
The merchant name.
The merchant category code (MCC). For example, 5814 for fast food restaurants.
Simulate a declined authorization.
Available options:
account_credit_limit_exceeded, card_locked, card_canceled, card_not_activated, blocked_mcc, blocked_merchant, balance_inquiry_not_permitted, expiry_mismatch, cvv_mismatch, invalid_pin, restricted_country Response
Successful operation
The transaction ID.
The transaction status.
Available options:
authorized, declined, settled Present when status is declined. The reason for the decline.
Present when status is settled. settlement after a settle, refund after a refund, authorization_reversal after a reverse.
Available options:
settlement, refund, authorization_reversal