Charming Seal·Blog
Notes from the bench. Posted when there is something to say.
Writing about running your own checkout, by the person who maintains it. There is no schedule and no mailing list, so a post goes up when a piece of the work is worth putting in front of somebody else.
26 Jul 2026
Three numbers to run before you rent a checkout
Three sums worth doing on a calculator before you agree to pay for a checkout every month.
→ 26 Jul 2026 What a real security audit found in a payments codebaseReading all 103 API routes end to end: what turned up, what was closed, and the three things still open.
→ 26 Jul 2026 Letting an agent run the shopEight MCP tools, one API key, and what it is like to hand an agent the orders and the prices.
→Keeping up
The changes live in the repository.
Nothing here is a substitute for the commit log. Every change lands in the source, so watching the repository is the whole subscription. These posts only cover the ones with an argument behind them.