{
  "type": "object",
  "properties": {
    "query": {
      "type": "string",
      "minLength": 1,
      "maxLength": 200,
      "description": "Chemical common name, technical substance name, synonym, or CAS number (Chemical Abstracts Service registry number, e.g. '80-05-7'). Use CAS when available for exact matching across ECHA SVHC, NIOSH, GHS, and ICSC records."
    }
  },
  "required": [
    "query"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

{
  "type": "object",
  "properties": {
    "substances": {
      "type": "string",
      "minLength": 1,
      "maxLength": 4000,
      "description": "Comma-separated or newline-separated list of chemical names or CAS numbers to screen against the EU ECHA SVHC Candidate List. Include CAS numbers when available because SVHC names may have salts, isomers, or synonym variants."
    }
  },
  "required": [
    "substances"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

{
  "type": "object",
  "properties": {
    "query": {
      "type": "string",
      "minLength": 1,
      "maxLength": 200,
      "description": "Hazard, endpoint, organ system, exposure route, regulatory phrase, or chemical keyword (e.g. 'carcinogen', 'respiratory', 'liver', 'skin sensitizer', 'endocrine'). Use this for discovery across SVHC, NIOSH, GHS, and ICSC data, not exact substance lookup."
    },
    "database": {
      "description": "Optional dataset filter. Use 'svhc' for ECHA Candidate List records, 'niosh' for occupational exposure profiles, 'ghs' for hazard classifications, 'icsc' for safety cards, or 'all' for cross-dataset discovery.",
      "type": "string",
      "enum": [
        "all",
        "svhc",
        "niosh",
        "ghs",
        "icsc"
      ]
    },
    "limit": {
      "description": "Maximum number of chemical records to return (1-25, default 10). Use lower limits for precise regulatory phrases and higher limits for broad hazard discovery.",
      "type": "number",
      "minimum": 1,
      "maximum": 25
    }
  },
  "required": [
    "query"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}