curl --request GET \
  --url https://api.agentpowers.ai/v1/categories

{
  "categories": [
    {
      "category": "<string>",
      "count": 123,
      "name": "<string>",
      "description": "<string>",
      "icon": "<string>",
      "sample_keywords": ""
    }
  ],
  "total_count": 123
}