Tips

Introduction I came across caveman-compression — a tool that compresses text into a token-efficient “caveman” format before sending it to an LLM. The pitch is simple: It can cut 30-65% of tokens depending on the content, which at Claude Opus prices adds up fast. I immediately wanted to wire it into Claude Code so compression would happen automatically on every prompt. The obvious hook was UserPromptSubmit. ...

Just a quick one here, but I used this a lot today and realised after chatting to some other devs that a lot of people don’t know about this trick. That trick is: History Expansion Let’s say you are SSH’d (or SSM’d on AWS if you want to be more secure) onto a Linux box and you want check the status of a service with systemctl status cassandra.service You see that the service is exited for some reason, and you want to restart it after determining that’s all that is needed. ...