curl --request POST \
  --url https://brew.new/api/v1/audiences/from-events \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "cohort": {
    "eventTypes": [
      "opened"
    ],
    "from": "2026-07-04T00:00:00.000Z",
    "to": "2026-08-03T00:00:00.000Z"
  }
}
'

import requests

url = "https://brew.new/api/v1/audiences/from-events"

payload = { "cohort": {
        "eventTypes": ["opened"],
        "from": "2026-07-04T00:00:00.000Z",
        "to": "2026-08-03T00:00:00.000Z"
    } }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    cohort: {
      eventTypes: ['opened'],
      from: '2026-07-04T00:00:00.000Z',
      to: '2026-08-03T00:00:00.000Z'
    }
  })
};

fetch('https://brew.new/api/v1/audiences/from-events', 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://brew.new/api/v1/audiences/from-events",
  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([
    'cohort' => [
        'eventTypes' => [
                'opened'
        ],
        'from' => '2026-07-04T00:00:00.000Z',
        'to' => '2026-08-03T00:00:00.000Z'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "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://brew.new/api/v1/audiences/from-events"

	payload := strings.NewReader("{\n  \"cohort\": {\n    \"eventTypes\": [\n      \"opened\"\n    ],\n    \"from\": \"2026-07-04T00:00:00.000Z\",\n    \"to\": \"2026-08-03T00:00:00.000Z\"\n  }\n}")

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

	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))

}

HttpResponse<String> response = Unirest.post("https://brew.new/api/v1/audiences/from-events")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"cohort\": {\n    \"eventTypes\": [\n      \"opened\"\n    ],\n    \"from\": \"2026-07-04T00:00:00.000Z\",\n    \"to\": \"2026-08-03T00:00:00.000Z\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://brew.new/api/v1/audiences/from-events")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"cohort\": {\n    \"eventTypes\": [\n      \"opened\"\n    ],\n    \"from\": \"2026-07-04T00:00:00.000Z\",\n    \"to\": \"2026-08-03T00:00:00.000Z\"\n  }\n}"

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

{
  "audienceId": "jn7a8w4q8m9k2p1x7c3b5v6n9h7s2d4f",
  "audienceName": "Openers · Jul 4 – Aug 3, 2026",
  "filters": {
    "filters": [
      {
        "field": "customFields.openedJul4Aug3",
        "operator": "is_not_empty",
        "type": "date"
      }
    ],
    "logicalOperator": "and"
  },
  "count": 0,
  "createdAt": "2026-04-08T12:34:56.789Z",
  "updatedAt": "2026-04-08T12:34:56.789Z",
  "materializationStatus": "pending",
  "build": {
    "jobId": "kh7c2m4q8n9w2p1x7c3b5v6n9h7s2d4f",
    "status": "pending",
    "cohort": {
      "eventTypes": [
        "opened"
      ],
      "from": "2026-07-04T00:00:00.000Z",
      "to": "2026-08-03T00:00:00.000Z"
    },
    "field": {
      "key": "openedJul4Aug3",
      "label": "Opened Jul 4 – Aug 3",
      "type": "date"
    },
    "counts": {
      "eventsScanned": 0
    },
    "enqueuedAt": "2026-08-03T12:00:00.000Z"
  }
}

{
  "error": {
    "code": "INVALID_REQUEST",
    "type": "invalid_request",
    "message": "Request validation failed.",
    "suggestion": "Fix the field reported in `param` and retry.",
    "docs": "https://docs.brew.new/api-reference/api/errors",
    "param": "cohort"
  }
}

{
  "error": {
    "code": "INVALID_API_KEY",
    "type": "authentication_error",
    "message": "The provided API key is invalid.",
    "suggestion": "Check the API key format and retry with a valid active key.",
    "docs": "https://docs.brew.new/api-reference/api/authentication"
  }
}

{
  "error": {
    "code": "INSUFFICIENT_PERMISSIONS",
    "type": "authorization_error",
    "message": "The caller does not have the required permission.",
    "suggestion": "Use an API key or session with the required permission.",
    "docs": "https://docs.brew.new/api-reference/api/authentication",
    "param": "contacts"
  }
}

{
  "error": {
    "code": "IDEMPOTENCY_CONFLICT",
    "type": "conflict",
    "message": "The same idempotency key was reused with a different request payload.",
    "suggestion": "Reuse the original payload or send a new idempotency key.",
    "docs": "https://docs.brew.new/api-reference/api/idempotency"
  }
}

{
  "error": {
    "code": "RATE_LIMITED",
    "type": "rate_limit",
    "message": "Too many requests.",
    "suggestion": "Wait for the retry window before sending another request.",
    "docs": "https://docs.brew.new/api-reference/api/rate-limits",
    "retryAfter": 42
  }
}

{
  "error": {
    "code": "INTERNAL_ERROR",
    "type": "internal_error",
    "message": "An unexpected error occurred.",
    "suggestion": "Retry the request. If it keeps failing, contact support.",
    "docs": "https://docs.brew.new/api-reference/api/errors"
  }
}