Writing

Field notes from the protocol edge.

Deep-dives on ACP, UCP, and MCP — written from production code, not press releases.

ACPJul 2026 · 9 min read

ACP explained: how an agent actually checks out

The Agentic Commerce Protocol is a small spec with big consequences. A walkthrough of the checkout lifecycle, delegated payments, and the idempotency trap.

MCPJun 2026 · 12 min read

MCP in production: what actually breaks

Auth, rate limits, streaming, and the five failure modes I hit running MCP servers for paying clients — with the fixes.

UCPJun 2026 · 7 min read

UCP vs ACP: which protocol does your store need?

Google standardized discovery, OpenAI standardized checkout. The honest answer is you will implement both — here is the smallest path.

AgentsMay 2026 · 14 min read

Building an agent that buys: end to end

From product feed to completed order — wiring an MCP client, a UCP storefront, and an ACP checkout into one working purchase.