curl --request GET \
  --url https://api.surnex.io/v1/dataforseo/catalog/categories \
  --header 'Authorization: Bearer <token>'

import requests

url = "https://api.surnex.io/v1/dataforseo/catalog/categories"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.text)

const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('https://api.surnex.io/v1/dataforseo/catalog/categories', 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.surnex.io/v1/dataforseo/catalog/categories",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://api.surnex.io/v1/dataforseo/catalog/categories"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.surnex.io/v1/dataforseo/catalog/categories")
  .header("Authorization", "Bearer <token>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.surnex.io/v1/dataforseo/catalog/categories")

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

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

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

{
  "generated_at": "2026-02-24T00:00:00Z",
  "discovery_context": {
    "requested_discovery": false,
    "force_refresh_requested": false,
    "source": "none",
    "discovered_at": null,
    "cache_key": "dataforseo:catalog:discovered:v1",
    "cache_ttl_seconds": 900,
    "cache_available": false,
    "cache_hit": false,
    "provider_calls": 0
  },
  "total_categories": 3,
  "total_services": 3,
  "total_operations": 7,
  "categories": [
    {
      "category": "ai_visibility",
      "service_count": 1,
      "operation_count": 2,
      "services": [
        "ai_optimization"
      ],
      "by_discovery_source": {
        "static": 1,
        "discovered": 0,
        "mixed": 0
      }
    },
    {
      "category": "keyword_research",
      "service_count": 1,
      "operation_count": 2,
      "services": [
        "keywords_data"
      ],
      "by_discovery_source": {
        "static": 1,
        "discovered": 0,
        "mixed": 0
      }
    },
    {
      "category": "serp",
      "service_count": 1,
      "operation_count": 3,
      "services": [
        "serp"
      ],
      "by_discovery_source": {
        "static": 1,
        "discovered": 0,
        "mixed": 0
      }
    }
  ],
  "supports_custom_paths": true,
  "supports_any_dataforseo_path": true
}

{
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request",
    "request_id": "req_123",
    "details": {
      "issues": [
        {
          "path": [
            "discovery_source"
          ],
          "message": "Invalid enum value. Expected static | discovered | mixed",
          "code": "invalid_enum_value"
        }
      ]
    }
  }
}

{
  "error": {
    "code": "UNAUTHORIZED",
    "message": "Unauthorized",
    "request_id": "req_123",
    "details": {
      "reason": "missing_or_invalid_api_key"
    }
  }
}

{
  "error": {
    "code": "PROVIDER_ERROR",
    "message": "Failed to discover DataForSEO operations",
    "request_id": "req_123",
    "details": {
      "provider_error": {
        "code": "BAD_REQUEST",
        "message": "Discovery endpoint failed"
      }
    }
  }
}