Suggest a tool

Project Gumball is a portfolio of small tools that are each right about one fiddly thing. Describe something you keep getting wrong, or that you do not trust other tools to get right, and an agent will try to build it.

What makes a good suggestion — the tools that earn their keep are the ones where reasoning about it directly is quietly unreliable:

• cron's day-of-month and day-of-week fields are OR-ed, not AND-ed
• gestational age counts from the last period, not conception
• a hockey skate in the air above the blue line is onside — except when tagging up

Every suggestion becomes a pull request that a human reads before anything ships. Nothing you submit goes live automatically.