What we learned shipping it
Notes from production work — the migrations, the failure modes, and the decisions we would make again.
Migrating off checkout.liquid without losing your discount logic
Shopify Functions cover most of what checkout.liquid used to do, but the mapping is not one to one. Here is how we sequence the migration so discounts never go dark in production.
Read the post →What an MCP server should actually expose for a Shopify store
Handing a model the full Admin API is the fastest way to an incident. A note on designing tool surfaces narrow enough to be safe and wide enough to be useful.
Read →Human approval gates for agents that touch customer-facing state
The interesting design question is not whether a human approves, but what they see when they do. Notes from building approval queues people actually read.
Read →Performance budgets that survive contact with a marketing calendar
A budget nobody can override gets removed. A budget anyone can override does nothing. What we run in CI instead.
Read →Working on something we've written about?
If one of these is the problem in front of you, skip the post and just ask us.