{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://eukollab.ai/ekp/1.2/types/screening-rules.json",
  "title": "Screening rules",
  "description": "The claims of the screening rules JWS (typ ekl-screening-rules+jwt): the phrase rules a consumer's adapter checks every result against, on the consumer's own machine. A match is reported as a safety_flag with its category and rules_version; content and matched words never leave the consumer.",
  "type": "object",
  "properties": {
    "iss": {
      "type": "string",
      "description": "The network's issuer."
    },
    "iat": {
      "type": "integer",
      "description": "Issued, Unix seconds."
    },
    "exp": {
      "type": "integer",
      "description": "Never used after this, Unix seconds. Cache for at most 24 h in any case."
    },
    "rules_version": {
      "type": "string",
      "maxLength": 40,
      "description": "The version a safety_flag cites."
    },
    "rules": {
      "type": "array",
      "maxItems": 2000,
      "description": "Phrase rules.",
      "items": {
        "type": "object",
        "description": "One rule: matches when any phrase occurs in a string of the result, compared after Unicode NFKC normalisation and case folding.",
        "properties": {
          "rule_id": {
            "type": "string",
            "maxLength": 40,
            "description": "The rule."
          },
          "category": {
            "type": "string",
            "pattern": "^[a-z][a-z0-9_]{0,39}$",
            "description": "The category a match reports."
          },
          "phrases": {
            "type": "array",
            "items": {
              "type": "string",
              "minLength": 1,
              "maxLength": 200
            },
            "minItems": 1,
            "maxItems": 200,
            "description": "The phrases."
          }
        },
        "additionalProperties": false,
        "required": [
          "rule_id",
          "category",
          "phrases"
        ]
      }
    }
  },
  "additionalProperties": false,
  "required": [
    "iss",
    "iat",
    "exp",
    "rules_version",
    "rules"
  ],
  "examples": [
    {
      "iss": "https://network.example",
      "iat": 1794484842,
      "exp": 1795089642,
      "rules_version": "2026-11-12.1",
      "rules": [
        {
          "rule_id": "r-0001",
          "category": "prohibited_content",
          "phrases": [
            "example prohibited phrase",
            "another banned phrase"
          ]
        },
        {
          "rule_id": "r-0002",
          "category": "regulated_goods",
          "phrases": [
            "example regulated item for sale"
          ]
        }
      ]
    }
  ]
}