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Product7 August 2026·3 min read

What 21 five-minute demos looked like at Paycux Demo Night

Shipping is the easy half.

Paycux engineering

Shipping is the easy half. The hard half is deciding what the thing is supposed to do for someone who has never read your roadmap and does not care about your architecture.

This piece walks through how we think about it at Paycux, what we have changed our minds about, and where the sharp edges are.

The rules are the format

The rules are the format is where this gets concrete. Ship the smallest version that is honest about its limits. A feature that does one thing completely beats one that does five things with an asterisk on each.

Defaults are the product. Most people will never open the settings screen, which means the behaviour you chose for them is the behaviour they will experience forever.

Carbon Code runs an agent harness on Mac OS 9

Carbon Code runs an agent harness on Mac OS 9 deserves its own treatment. Ship the smallest version that is honest about its limits. A feature that does one thing completely beats one that does five things with an asterisk on each.

Defaults are the product. Most people will never open the settings screen, which means the behaviour you chose for them is the behaviour they will experience forever.

  • Choose defaults as carefully as features
  • Settle the name before you ship the thing
  • Ship the smallest honest version
  • Say plainly what the feature does not do

The agent doesn't live on your laptop anymore

The agent doesn't live on your laptop anymore deserves its own treatment. Defaults are the product. Most people will never open the settings screen, which means the behaviour you chose for them is the behaviour they will experience forever.

Ship the smallest version that is honest about its limits. A feature that does one thing completely beats one that does five things with an asterisk on each.

Keys are the next thing to move off the machine

Consider keys are the next thing to move off the machine. Defaults are the product. Most people will never open the settings screen, which means the behaviour you chose for them is the behaviour they will experience forever.

Defaults are the product. Most people will never open the settings screen, which means the behaviour you chose for them is the behaviour they will experience forever.

Naming is design work.

Nobody trusts a public benchmark

Nobody trusts a public benchmark is where this gets concrete. Naming is design work. If the team argues about what to call something, the disagreement is usually about what it is, and shipping before that is settled means shipping the confusion to customers.

Ship the smallest version that is honest about its limits. A feature that does one thing completely beats one that does five things with an asterisk on each.

Every surface is an agent surface, which is the problem

Every surface is an agent surface, which is the problem deserves its own treatment. Ship the smallest version that is honest about its limits. A feature that does one thing completely beats one that does five things with an asterisk on each.

Defaults are the product. Most people will never open the settings screen, which means the behaviour you chose for them is the behaviour they will experience forever.

Or you keep the whole thing local

Consider or you keep the whole thing local. Naming is design work. If the team argues about what to call something, the disagreement is usually about what it is, and shipping before that is settled means shipping the confusion to customers.

Naming is design work. If the team argues about what to call something, the disagreement is usually about what it is, and shipping before that is settled means shipping the confusion to customers.

Where this leaves us

If there is one thing worth taking away, it is that the expensive decisions are the ones made implicitly. Making them on purpose costs an afternoon.

If you are working through the same problem and want to compare notes, the docs cover the mechanics and the console shows the behaviour on your own data.

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