Первый SEO-текст — одним запросом.

curl --request POST "https://seomorphy.ru/v1/generate" \
  --header "Authorization: Bearer <API_KEY>" \
  --header "Idempotency-Key: request-$(date +%s)-$RANDOM" \
  --header "Content-Type: application/json" \
  --data '{
  "channel": "website",
  "generation_mode": "strict",
  "templates": {
    "seo_title": "Купить {{color|case:acc|agree:product_name}} {{product_name|case:acc|head|lower}} в Москве и РФ",
    "meta_description": "Ищете {{color|case:acc|agree:product_name}} {{product_name|case:acc|head|lower}} с доставкой? Закажите {{color|case:acc|agree:product_name}} {{product_name|case:acc|head|lower}} бренда {{brand|lock}} онлайн."
  },
  "items": [
    {
      "external_id": "fashion-2001",
      "product_name": "куртка",
      "brand": "Armani",
      "color": "синий"
    }
  ]
}'

const response = await fetch("https://seomorphy.ru/v1/generate", {
  method: "POST",
  headers: {
    Authorization: "Bearer " + process.env.SEO_MORPHY_API_KEY,
    "Idempotency-Key": crypto.randomUUID(),
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
  "channel": "website",
  "generation_mode": "strict",
  "templates": {
    "seo_title": "Купить {{color|case:acc|agree:product_name}} {{product_name|case:acc|head|lower}} в Москве и РФ",
    "meta_description": "Ищете {{color|case:acc|agree:product_name}} {{product_name|case:acc|head|lower}} с доставкой? Закажите {{color|case:acc|agree:product_name}} {{product_name|case:acc|head|lower}} бренда {{brand|lock}} онлайн."
  },
  "items": [
    {
      "external_id": "fashion-2001",
      "product_name": "куртка",
      "brand": "Armani",
      "color": "синий"
    }
  ]
}),
});

const result = await response.json();
console.log(result);

import json
import os
import uuid
from urllib.request import Request, urlopen

payload = {
    "channel": "website",
    "generation_mode": "strict",
    "templates": {
        "seo_title": "Купить {{color|case:acc|agree:product_name}} {{product_name|case:acc|head|lower}} в Москве и РФ",
        "meta_description": "Ищете {{color|case:acc|agree:product_name}} {{product_name|case:acc|head|lower}} с доставкой? Закажите {{color|case:acc|agree:product_name}} {{product_name|case:acc|head|lower}} бренда {{brand|lock}} онлайн."
    },
    "items": [
        {
            "external_id": "fashion-2001",
            "product_name": "куртка",
            "brand": "Armani",
            "color": "синий"
        }
    ]
}
request = Request(
    "https://seomorphy.ru/v1/generate",
    data=json.dumps(payload, ensure_ascii=False).encode("utf-8"),
    method="POST",
    headers={
        "Authorization": "Bearer " + os.environ["SEO_MORPHY_API_KEY"],
        "Idempotency-Key": str(uuid.uuid4()),
        "Content-Type": "application/json",
    },
)

with urlopen(request, timeout=30) as response:
    print(json.load(response))

<?php
$payload = <<<'JSON'
{
  "channel": "website",
  "generation_mode": "strict",
  "templates": {
    "seo_title": "Купить {{color|case:acc|agree:product_name}} {{product_name|case:acc|head|lower}} в Москве и РФ",
    "meta_description": "Ищете {{color|case:acc|agree:product_name}} {{product_name|case:acc|head|lower}} с доставкой? Закажите {{color|case:acc|agree:product_name}} {{product_name|case:acc|head|lower}} бренда {{brand|lock}} онлайн."
  },
  "items": [
    {
      "external_id": "fashion-2001",
      "product_name": "куртка",
      "brand": "Armani",
      "color": "синий"
    }
  ]
}
JSON;

$curl = curl_init('https://seomorphy.ru/v1/generate');
curl_setopt_array($curl, [
    CURLOPT_POST => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => [
        'Authorization: Bearer ' . getenv('SEO_MORPHY_API_KEY'),
        'Idempotency-Key: ' . bin2hex(random_bytes(16)),
        'Content-Type: application/json',
    ],
    CURLOPT_POSTFIELDS => $payload,
]);

echo curl_exec($curl);

APIКлюч = ПолучитьAPIКлюч();
ТелоJSON = "{""channel"":""website"",""generation_mode"":""strict"",""templates"":{""seo_title"":""Купить {{color|case:acc|agree:product_name}} {{product_name|case:acc|head|lower}} в Москве и РФ"",""meta_description"":""Ищете {{color|case:acc|agree:product_name}} {{product_name|case:acc|head|lower}} с доставкой? Закажите {{color|case:acc|agree:product_name}} {{product_name|case:acc|head|lower}} бренда {{brand|lock}} онлайн.""},""items"":[{""external_id"":""fashion-2001"",""product_name"":""куртка"",""brand"":""Armani"",""color"":""синий""}]}";

SSL = Новый ЗащищенноеСоединениеOpenSSL;
Соединение = Новый HTTPСоединение("seomorphy.ru", 443,,,, SSL);
Запрос = Новый HTTPЗапрос("/v1/generate");
Запрос.Заголовки.Вставить("Authorization", "Bearer " + APIКлюч);
Запрос.Заголовки.Вставить("Idempotency-Key", Строка(Новый УникальныйИдентификатор));
Запрос.Заголовки.Вставить("Content-Type", "application/json; charset=utf-8");
Запрос.УстановитьТелоИзСтроки(ТелоJSON, КодировкаТекста.UTF8);

Ответ = Соединение.ВызватьHTTPМетод("POST", Запрос);
Сообщить(Ответ.ПолучитьТелоКакСтроку());