Casper Sun

What I run

A self-hosted AI assistant on a Mac mini that handles my mail, daily planning, media library upkeep and research. It runs on a routing layer I built across free and paid model providers, so cost stays visible and quotas get used rather than wasted.

A small homelab behind it: a NAS media server with automated acquisition and subtitles, a self-built LLM gateway, and a set of scheduled jobs that keep everything reconciled. Most of it is glue code — cron jobs, webhooks and careful failure handling.

I spend an unreasonable amount of time on free-tier engineering: finding legitimate free API allowances, verifying they actually work, and exhausting them before paying for anything.

Currently

• Running a personal agent that writes its own runbooks.
• Keeping a home media library in order — sourcing, subtitles, dedupe.
• Evaluating model providers on measured latency instead of marketing.

Contact

By referral or through an existing channel. This page is a personal site, not a business.