{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://mobius.systems/schemas/epicon/ej-v0.1.0.json",
  "title": "EPICON-01 Epistemic Justification",
  "description": "Schema for AI epistemic justification and constraint validation in Mobius Systems",
  "type": "object",
  "required": [
    "version",
    "timestamp",
    "css",
    "context",
    "values",
    "reasoning",
    "anchors",
    "boundaries",
    "counterfactual"
  ],
  "properties": {
    "version": {
      "type": "string",
      "const": "EPICON-01",
      "description": "EPICON specification version"
    },
    "timestamp": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 timestamp of when this justification was generated"
    },
    "css": {
      "type": "object",
      "description": "Common-Sense Safety check result",
      "required": ["safe", "checks"],
      "properties": {
        "safe": {
          "type": "boolean",
          "description": "Whether common-sense safety constraints are satisfied"
        },
        "checks": {
          "type": "array",
          "description": "Safety checks performed",
          "items": {
            "type": "string",
            "enum": [
              "no_harm",
              "no_coercion",
              "no_fraud",
              "legal_compliance",
              "coordination_preservation",
              "physical_safety",
              "psychological_safety"
            ]
          },
          "minItems": 1
        },
        "violations": {
          "type": "array",
          "description": "Any detected safety violations (if safe=false)",
          "items": {
            "type": "string"
          }
        }
      }
    },
    "context": {
      "type": "object",
      "description": "Inferred context for the situation",
      "required": ["label", "confidence", "assumptions"],
      "properties": {
        "label": {
          "type": "string",
          "description": "Primary context label",
          "examples": ["cultural-ritual", "workplace", "educational", "medical"]
        },
        "confidence": {
          "type": "number",
          "minimum": 0,
          "maximum": 1,
          "description": "Confidence in context inference (0-1)"
        },
        "assumptions": {
          "type": "array",
          "description": "Assumptions made about the context",
          "items": {
            "type": "string"
          },
          "minItems": 1
        },
        "alternatives_considered": {
          "type": "array",
          "description": "Alternative contexts evaluated for CCR",
          "items": {
            "type": "string"
          }
        }
      }
    },
    "values": {
      "type": "array",
      "description": "Principles invoked in the justification",
      "items": {
        "type": "string"
      },
      "minItems": 1,
      "examples": [
        ["respect", "duty", "celebration", "humility", "reciprocity", "care"]
      ]
    },
    "reasoning": {
      "type": "object",
      "description": "Structured reasoning for the action",
      "required": ["summary", "steps"],
      "properties": {
        "summary": {
          "type": "string",
          "description": "Brief explanation of why the action makes sense",
          "minLength": 10
        },
        "steps": {
          "type": "array",
          "description": "Reasoning steps taken",
          "items": {
            "type": "string"
          },
          "minItems": 1
        }
      }
    },
    "anchors": {
      "type": "array",
      "description": "Independent epistemic anchors supporting the reasoning",
      "minItems": 2,
      "items": {
        "type": "object",
        "required": ["type", "claim", "source", "confidence"],
        "properties": {
          "type": {
            "type": "string",
            "enum": [
              "custom",
              "practice",
              "empirical",
              "policy",
              "user_values",
              "domain_norm"
            ],
            "description": "Category of epistemic anchor"
          },
          "claim": {
            "type": "string",
            "description": "The claim this anchor supports",
            "minLength": 5
          },
          "source": {
            "type": "string",
            "description": "Reference or description of the anchor source",
            "minLength": 3
          },
          "confidence": {
            "type": "number",
            "minimum": 0,
            "maximum": 1,
            "description": "Confidence in anchor reliability (0-1)"
          }
        }
      }
    },
    "boundaries": {
      "type": "object",
      "description": "Conditions defining when justification applies or fails",
      "required": ["applies_when", "fails_when"],
      "properties": {
        "applies_when": {
          "type": "array",
          "description": "Conditions under which this justification applies",
          "items": {
            "type": "string"
          },
          "minItems": 1
        },
        "fails_when": {
          "type": "array",
          "description": "Conditions under which this justification fails",
          "items": {
            "type": "string"
          },
          "minItems": 1
        }
      }
    },
    "counterfactual": {
      "type": "object",
      "description": "What would change the conclusion (falsifiability)",
      "required": ["if_changed", "then"],
      "properties": {
        "if_changed": {
          "type": "string",
          "description": "Alternative state of the world",
          "minLength": 5
        },
        "then": {
          "type": "string",
          "description": "How the recommendation would change",
          "minLength": 5
        }
      }
    },
    "ccr": {
      "type": "object",
      "description": "Cross-Context Robustness score",
      "properties": {
        "score": {
          "type": "number",
          "minimum": 0,
          "maximum": 1,
          "description": "CCR score (0-1)"
        },
        "threshold": {
          "type": "number",
          "minimum": 0,
          "maximum": 1,
          "description": "Required threshold for this situation"
        },
        "status": {
          "type": "string",
          "enum": ["pass", "fail", "needs_clarification"],
          "description": "CCR validation status"
        }
      }
    },
    "attestation": {
      "type": "object",
      "description": "Cryptographic attestation for audit trail",
      "properties": {
        "hash": {
          "type": "string",
          "description": "SHA-256 hash of the EJ content"
        },
        "signer": {
          "type": "string",
          "description": "Identity of the signing entity"
        },
        "signature": {
          "type": "string",
          "description": "Cryptographic signature"
        }
      }
    }
  },
  "additionalProperties": false
}