name: query_dataset
description: "Query a dataset catalog for available datasets, their schemas, and statistics"
when_to_use: "When selecting training data, understanding feature distributions, or checking data quality before model training"
parameters:
  search:
    type: string
    description: "Free-text search term to filter datasets by name or description"
    required: false
  data_type:
    type: string
    description: "Filter by dataset modality, e.g. \"tabular\", \"text\", \"image\""
    required: false
  min_rows:
    type: integer
    description: "Minimum number of rows required in the dataset"
    required: false
  tags:
    type: array
    description: "Filter datasets by associated tags"
    required: false
returns:
  type: array
  description: "List of matching datasets with metadata and quality indicators"
  items:
    type: object
    properties:
      dataset_id:
        type: string
      name:
        type: string
      description:
        type: string
      row_count:
        type: integer
      feature_count:
        type: integer
      schema_url:
        type: string
      quality_score:
        type: number
      last_updated:
        type: string