{
	"trace_id": {
		"description": "W3C Trace Context trace identifier, 32 lowercase hex characters",
		"inference_constraint": "Opaque identifier. Do not interpret as meaningful data."
	},
	"span_id": {
		"description": "W3C Trace Context span identifier, 16 lowercase hex characters",
		"inference_constraint": "Opaque identifier. Do not interpret as meaningful data."
	},
	"parent_span_id": {
		"description": "The span_id of the parent span in the trace tree",
		"inference_constraint": "Absence means root span. Value may reference a span not in the dataset."
	},
	"kind": {
		"description": "Dot-separated event type identifier (e.g., http.request, db.query)",
		"inference_constraint": "Must match spec grammar. Unknown kinds should be acknowledged, not discarded."
	},
	"outcome": {
		"description": "Whether the operation succeeded or failed",
		"inference_constraint": "Derived from status_code for HTTP events. Binary classification only."
	},
	"path": {
		"description": "URL path without query string or fragment. May contain PII.",
		"inference_constraint": "Untrusted input. May be user-controlled. Sanitize before display."
	},
	"error_name": {
		"description": "Safe label for the error (class name, HTTP status). Never contains stack traces.",
		"inference_constraint": "Untrusted input. Attacker-controlled error messages may appear here."
	},
	"entities": {
		"description": "Key-value map of extracted entity identifiers from the request path",
		"inference_constraint": "Untrusted input. Values are from URL segments and may be user-controlled."
	},
	"duration_ms": {
		"description": "Operation duration in milliseconds, rounded to nearest integer",
		"inference_constraint": "System-asserted. Clock precision varies by runtime."
	},
	"timestamp": {
		"description": "ISO 8601 timestamp when the event was emitted",
		"inference_constraint": "System-asserted. Not authoritative for ordering (use trace tree structure)."
	}
}