{ "type": "object", "description": "The last N lines of a log source", "required": ["lines", "size", "truncated", "exists"], "additionalProperties": false, "properties": { "lines": { "type": "array", "items": { "type": "string" }, "example": ["2026-01-01T00:00:00.000Z INFO [Global ] Backend PID 1 listening on port 3000 ..."] }, "size": { "type": "integer", "description": "Size in bytes of the underlying log file", "example": 4096 }, "truncated": { "type": "boolean", "description": "True when the file is larger than the maximum amount of data scanned per request", "example": false }, "exists": { "type": "boolean", "description": "False when the underlying log file does not exist yet", "example": true } } }