import json,pathlib,sys
p=pathlib.Path(sys.argv[1])
def usage(i,o):
 return dict(input_tokens=i,cached_input_tokens=0,cache_write_input_tokens=0,output_tokens=o,reasoning_output_tokens=0,total_tokens=i+o)
record=dict(type='event_msg',timestamp='2026-11-02T12:00:01.000Z',payload=dict(type='token_count',info=dict(last_token_usage=usage(50,10),total_token_usage=usage(1350,270))))
with p.open('a') as f:f.write(json.dumps(record)+'\n')