{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "urn:orbiplex:schema:trace-event:v1",
  "title": "Trace Event v1",
  "description": "Redacted P074 trace projection over an existing committed fact. The trace event is a read model, never a source of authority.",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "schema",
    "schema/v",
    "trace/event-id",
    "run/id",
    "node/ref",
    "source/store",
    "component/id",
    "event/time",
    "event/kind",
    "status",
    "causal/context",
    "detail/redacted"
  ],
  "properties": {
    "schema": { "const": "trace-event.v1" },
    "schema/v": { "const": 1 },
    "trace/event-id": { "type": "string", "pattern": "^trace-event:[A-Za-z0-9_-]+$", "maxLength": 180 },
    "run/id": { "type": "string", "minLength": 1, "maxLength": 256, "pattern": "^[^\\s]+$" },
    "node/ref": { "type": "string", "minLength": 1, "maxLength": 256, "pattern": "^[^\\s]+$" },
    "source/store": { "type": "string", "minLength": 1, "maxLength": 120, "pattern": "^[a-z][a-z0-9-]*$" },
    "component/id": { "type": "string", "minLength": 1, "maxLength": 180, "pattern": "^[A-Za-z0-9_.:-]+$" },
    "event/time": { "type": "string", "format": "date-time" },
    "event/kind": { "type": "string", "minLength": 1, "maxLength": 120, "pattern": "^[a-z][a-z0-9-]*$" },
    "status": { "type": "string", "minLength": 1, "maxLength": 120, "pattern": "^[a-z][a-z0-9-]*$" },
    "causal/context": { "$ref": "causal-context.v1.schema.json" },
    "receipt/ref": { "type": "string", "pattern": "^execution-receipt:[A-Za-z0-9:_-]+$", "maxLength": 180 },
    "effect/refs": { "type": "array", "maxItems": 16, "uniqueItems": true, "items": { "$ref": "#/$defs/ref" } },
    "outcome/refs": { "type": "array", "maxItems": 16, "uniqueItems": true, "items": { "$ref": "#/$defs/ref" } },
    "detail/redacted": {
      "type": "object",
      "additionalProperties": { "type": ["string", "number", "boolean", "null"] },
      "maxProperties": 16
    }
  },
  "$defs": {
    "ref": { "type": "string", "minLength": 1, "maxLength": 512, "pattern": "^[^\\s]+$" }
  }
}