What it runs on

No mystery about the stack. If you want to build something like this yourself, everything below is either off the shelf or public.

Claude Code, the brain

Nineteen skills and a set of agents. A skill is a written procedure Claude follows: how to screen a company, how to draft in my voice, how to check its own work. The agents run the parts that need a fresh pair of eyes, which is most of the writing.

Supabase, the memory

Postgres, with everything that happens written to it. Which companies came through the screen, what was sent to whom and when, who replied and what they said. The weekly numbers are counted from that record rather than remembered, which is the only reason publishing them means anything.

Instantly and HeyReach, for the outreach

Instantly sends the cold email, on a separate domain so the outreach and the website never share a reputation. HeyReach runs the LinkedIn side. Both channels reach the same prospect a few days apart, and both are recorded separately so the weekly write-up can say which one actually produced a reply.

Companies House, for the prospect data

Filed accounts, read directly through the public API. Nothing is bought from a data broker and no list has been acquired from anyone. Every company on my list is on my list because of what it filed about itself, and you can check any of it at Companies House in about thirty seconds.

Why publish this

I've said I can't prove the system works yet. Saying exactly what it's built on is the same move: it's harder to hide behind a stack you've listed. And if someone reads this and builds their own instead of talking to me, that is a perfectly good outcome.