curl --request POST \
  --url https://api.creem.io/v1/events/preview \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "events": [
    {
      "name": "image.generated",
      "customer_id": "cust_abc123",
      "external_customer_id": "user-42",
      "event_id": "order-1234",
      "timestamp": "2026-08-15T10:30:00.000Z",
      "properties": {
        "tokens": 1200,
        "tier": "pro"
      }
    }
  ]
}
'

import requests

url = "https://api.creem.io/v1/events/preview"

payload = { "events": [
        {
            "name": "image.generated",
            "customer_id": "cust_abc123",
            "external_customer_id": "user-42",
            "event_id": "order-1234",
            "timestamp": "2026-08-15T10:30:00.000Z",
            "properties": {
                "tokens": 1200,
                "tier": "pro"
            }
        }
    ] }
headers = {
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    events: [
      {
        name: 'image.generated',
        customer_id: 'cust_abc123',
        external_customer_id: 'user-42',
        event_id: 'order-1234',
        timestamp: '2026-08-15T10:30:00.000Z',
        properties: {tokens: 1200, tier: 'pro'}
      }
    ]
  })
};

fetch('https://api.creem.io/v1/events/preview', 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.creem.io/v1/events/preview",
  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([
    'events' => [
        [
                'name' => 'image.generated',
                'customer_id' => 'cust_abc123',
                'external_customer_id' => 'user-42',
                'event_id' => 'order-1234',
                'timestamp' => '2026-08-15T10:30:00.000Z',
                'properties' => [
                                'tokens' => 1200,
                                'tier' => 'pro'
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-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.creem.io/v1/events/preview"

	payload := strings.NewReader("{\n  \"events\": [\n    {\n      \"name\": \"image.generated\",\n      \"customer_id\": \"cust_abc123\",\n      \"external_customer_id\": \"user-42\",\n      \"event_id\": \"order-1234\",\n      \"timestamp\": \"2026-08-15T10:30:00.000Z\",\n      \"properties\": {\n        \"tokens\": 1200,\n        \"tier\": \"pro\"\n      }\n    }\n  ]\n}")

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

	req.Header.Add("x-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.creem.io/v1/events/preview")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"events\": [\n    {\n      \"name\": \"image.generated\",\n      \"customer_id\": \"cust_abc123\",\n      \"external_customer_id\": \"user-42\",\n      \"event_id\": \"order-1234\",\n      \"timestamp\": \"2026-08-15T10:30:00.000Z\",\n      \"properties\": {\n        \"tokens\": 1200,\n        \"tier\": \"pro\"\n      }\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.creem.io/v1/events/preview")

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

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"events\": [\n    {\n      \"name\": \"image.generated\",\n      \"customer_id\": \"cust_abc123\",\n      \"external_customer_id\": \"user-42\",\n      \"event_id\": \"order-1234\",\n      \"timestamp\": \"2026-08-15T10:30:00.000Z\",\n      \"properties\": {\n        \"tokens\": 1200,\n        \"tier\": \"pro\"\n      }\n    }\n  ]\n}"

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

{
  "valid": true,
  "events": [
    {
      "valid": true,
      "matched_meters": [
        "mtr_abc123"
      ],
      "warnings": [
        {
          "code": "no_matching_meter",
          "message": "<string>"
        }
      ],
      "event_id": "order-1234",
      "customer_id": "cust_abc123",
      "error": {
        "code": "invalid_usage_event",
        "message": "<string>",
        "param": "customer_id"
      },
      "duplicate": true
    }
  ]
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "meter_name_taken",
    "message": "A meter named \"Image generations\" already exists in this store",
    "request_id": "req_abc123def456",
    "param": "events[3].customer_id",
    "details": {
      "archived_holder": true,
      "archived_holder_id": "mtr_abc123"
    }
  }
}