{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://cis2042.github.io/ux3-product-design-harness/schemas/evidence-request.schema.json",
  "title": "Product Design Harness Evidence Request",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "request_id",
    "decision_question",
    "claim_ids",
    "allowed_source_types",
    "required_signal_types",
    "freshness_limit_days",
    "return_counter_signals"
  ],
  "properties": {
    "request_id": {
      "type": "string",
      "minLength": 1
    },
    "decision_question": {
      "type": "string",
      "minLength": 1
    },
    "claim_ids": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "minItems": 1
    },
    "allowed_source_types": {
      "type": "array",
      "items": {
        "type": "string",
        "enum": [
          "internal",
          "external",
          "workflow",
          "risk",
          "direct_learning"
        ]
      },
      "minItems": 1
    },
    "required_signal_types": {
      "type": "array",
      "items": {
        "type": "string",
        "enum": [
          "stated_opinion",
          "quote",
          "observed_behavior",
          "workflow_trace",
          "product_log",
          "transaction",
          "market_signal",
          "policy",
          "derived"
        ]
      }
    },
    "freshness_limit_days": {
      "type": "integer",
      "minimum": 0
    },
    "return_counter_signals": {
      "const": true
    }
  }
}