I’m Paul. I build focused tools that do one job, and do it well.

The Bullion API data page — bullionapi.dev/data

The Bullion API homepage — bullionapi.dev

A dot under an icon means the product is live. The other four are still being built.

Products

Bullion APILiveMetal prices in 151 currencies, for your app.SatzoIn developmentUK crypto gains and balances across your wallets.SwitchboardIn developmentCustomers and their emails, across all your projects.LookoutIn developmentScheduled checks for SEO issues worth fixing.Workflow HealthIn developmentSpot queued or slowing GitHub Actions jobs.

Changelog

See everything I’ve shipped

21 October 2026Bullion API

Adding nine more central banks to the Bullion API's gold data

I added nine central banks to the Bullion API's gold holdings data, and had to make one rule about showing changes hold across every page.

21 October 2026Bullion API

Building an MCP server for the Bullion API

I built a read-only MCP server so I could ask an agent about gold without handing it anything that could change an account.

21 October 2026Bullion API

Inflation-adjusted gold price to the Bullion API

I added a gold price in today's money and a gold/real-yield correlation to the Bullion API, and chose seasonally adjusted CPI over a simpler substitute.

Notebook

216 notes, mostly about AI, React and Laravel.

Browse the notebook

My VPS got throttled to 20% CPU, so I'm buying a mini PC for home05 Oct Why I use the CLI with Herdr instead of desktop apps and orchestrators05 Oct I moved my coding agents to a VPS so I could close my laptop01 Oct Email verification belongs at the API boundary02 Aug