curl --request POST \
  --url https://api.example.com/dict-hub/v1/keys/check \
  --header 'Authorization: Bearer demo-access-token' \
  --header 'Content-Type: application/json' \
  --data '{
  "keys": [
    {
      "key": "52998224725"
    }
  ]
}'

package main

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

func main() {

	url := "https://api.example.com/dict-hub/v1/keys/check"

	payload := strings.NewReader("{\n  \"keys\": [\n    {\n      \"key\": \"52998224725\"\n    }\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))

}

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({keys: [{key: '52998224725'}]})
};

fetch('https://api.example.com/dict-hub/v1/keys/check', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.example.com/dict-hub/v1/keys/check"

payload = { "keys": [{ "key": "52998224725" }] }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "keys": [
    {
      "hasEntry": true,
      "key": "52998224725"
    }
  ]
}

{
  "code": "ERR-0001",
  "detail": "Property foo is required but is missing.",
  "errors": [
    {
      "location": "<string>",
      "message": "<string>",
      "value": "<unknown>"
    }
  ],
  "instance": "https://example.com/error-log/abc123",
  "status": 400,
  "title": "Bad Request",
  "type": "https://example.com/errors/example",
  "upstream": {
    "code": "E4001",
    "message": "account not found at provider"
  }
}