What are you doing to keep a JSONL per session? Or is this something built in? I’m interested in estimating token costs in this way.
What are you doing to keep a JSONL per session? Or is this something built in? I’m interested in estimating token costs in this way.
It's built in - the ~/.claude/projects folder stores the JSONL for 30 days or you can extend the retention time like this: https://simonwillison.net/2025/Oct/22/claude-code-logs/