curl --request POST \
  --url https://api.mixpeek.com/v1/collections/list \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'X-Namespace: <x-namespace>' \
  --data '{
  "filters": {},
  "sort": {
    "field": "created_at",
    "direction": "desc"
  },
  "search": "<string>",
  "case_sensitive": false
}'

{
  "results": [
    {
      "collection_id": "col_a1b2c3d4e5",
      "collection_name": "article_embeddings",
      "description": "Simple text collection: News articles with text embeddings from bucket source",
      "enabled": true,
      "feature_extractor": {
        "feature_extractor_name": "text_extractor",
        "field_passthrough": [
          {
            "source_path": "title"
          }
        ],
        "input_mappings": {
          "text": "content"
        },
        "version": "v1"
      },
      "input_schema": {
        "properties": {
          "title": {
            "type": "string"
          },
          "content": {
            "type": "text"
          }
        }
      },
      "output_schema": {
        "properties": {
          "title": {
            "type": "string"
          },
          "text_extractor_v1_embedding": {
            "type": "array"
          }
        }
      },
      "source": {
        "bucket_id": "bkt_articles",
        "type": "bucket"
      }
    }
  ],
  "pagination": {
    "total": 123,
    "page": 123,
    "page_size": 123,
    "total_pages": 123,
    "next_page": "<string>",
    "previous_page": "<string>"
  },
  "total_count": 123,
  "stats": {
    "total_documents": 0,
    "avg_documents_per_collection": 0,
    "collections_with_taxonomies": 0,
    "total_feature_extractors": 0,
    "total_taxonomies": 0,
    "total_retrievers": 0
  }
}