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

24 October 2026Bullion API

Every incident, from open to close.

Building a status page for the Bullion API that explains its incidents

I built a public status page for the Bullion API, chose checks with a clear failure meaning, and gave every incident a timeline from open to close.

24 October 2026Bullion API

No price data until the email is verified.

Requiring a verified email address for Bullion API keys

How I put email verification in front of Bullion API access, then changed sign-up so the emailed link itself proves the address before anyone sets a password.

21 October 2026Bullion API

Gold in today’s dollars.

Adding an 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

163 notes, mostly about AI, Laravel and React.

Browse the notebook

What happens to developers who don't adapt to AI24 Oct useState, useReducer and the mental model of state in React24 Oct Software engineering in the age of AI24 Oct Sharing state in React without Redux24 Oct