Mark Phelps

Building

Making useful software, maintaining open source, and sharing ideas through writing and teaching.

2026

When AI writes all the code

I delegate implementation to agents while staying involved in design, evaluating larger features, and checking that the whole application works as I expect.

Building · 6 min

Giving my AI agents access to my RSS reader

How I turned Cove, the Mac RSS reader I built, into an MCP server so my AI agents send me a daily digest in Discord while my library stays on my Mac.

Building · 6 min

The letter

New essays by email. It costs nothing.