curl --request POST \
  --url https://api.mixpeek.com/v1/retrievers \
  --header 'Content-Type: application/json' \
  --data '{
  "retriever_name": "product_search_v1",
  "description": "CLIP + metadata prefiltering",
  "input_schema": {
    "properties": {}
  },
  "collection_ids": [
    "col_products_v1"
  ],
  "stages": [
    {
      "stage_name": "<string>",
      "version": "<string>",
      "parameters": {},
      "pre_filters": {
        "AND": [
          {
            "field": "name",
            "operator": "eq",
            "value": "John"
          },
          {
            "field": "age",
            "operator": "gte",
            "value": 30
          }
        ],
        "OR": [
          {
            "field": "status",
            "operator": "eq",
            "value": "active"
          },
          {
            "field": "role",
            "operator": "eq",
            "value": "admin"
          }
        ],
        "NOT": [
          {
            "field": "department",
            "operator": "eq",
            "value": "HR"
          },
          {
            "field": "location",
            "operator": "eq",
            "value": "remote"
          }
        ],
        "case_sensitive": true
      },
      "post_filters": {
        "AND": [
          {
            "field": "name",
            "operator": "eq",
            "value": "John"
          },
          {
            "field": "age",
            "operator": "gte",
            "value": 30
          }
        ],
        "OR": [
          {
            "field": "status",
            "operator": "eq",
            "value": "active"
          },
          {
            "field": "role",
            "operator": "eq",
            "value": "admin"
          }
        ],
        "NOT": [
          {
            "field": "department",
            "operator": "eq",
            "value": "HR"
          },
          {
            "field": "location",
            "operator": "eq",
            "value": "remote"
          }
        ],
        "case_sensitive": true
      }
    }
  ],
  "metadata": {}
}'

{
  "retriever_id": "<string>",
  "retriever_name": "<string>",
  "description": "<string>",
  "input_schema": {
    "properties": {}
  },
  "collection_ids": [
    "<string>"
  ],
  "stages": [
    {
      "stage_name": "<string>",
      "version": "<string>",
      "parameters": {},
      "pre_filters": {
        "AND": [
          {
            "field": "name",
            "operator": "eq",
            "value": "John"
          },
          {
            "field": "age",
            "operator": "gte",
            "value": 30
          }
        ],
        "OR": [
          {
            "field": "status",
            "operator": "eq",
            "value": "active"
          },
          {
            "field": "role",
            "operator": "eq",
            "value": "admin"
          }
        ],
        "NOT": [
          {
            "field": "department",
            "operator": "eq",
            "value": "HR"
          },
          {
            "field": "location",
            "operator": "eq",
            "value": "remote"
          }
        ],
        "case_sensitive": true
      },
      "post_filters": {
        "AND": [
          {
            "field": "name",
            "operator": "eq",
            "value": "John"
          },
          {
            "field": "age",
            "operator": "gte",
            "value": 30
          }
        ],
        "OR": [
          {
            "field": "status",
            "operator": "eq",
            "value": "active"
          },
          {
            "field": "role",
            "operator": "eq",
            "value": "admin"
          }
        ],
        "NOT": [
          {
            "field": "department",
            "operator": "eq",
            "value": "HR"
          },
          {
            "field": "location",
            "operator": "eq",
            "value": "remote"
          }
        ],
        "case_sensitive": true
      }
    }
  ]
}