Findings from building tools that check things. Mostly what broke, and what the numbers said afterwards.
A two-line guard in my payment webhook stops a paying customer from being told they haven't paid. Claude Fable wrote it, with its test, in one commit. I reviewed that commit and did not notice.
Read itSearch APIs reach the news sites that block AI crawlers. I tested it, it works, and then I found out why it works. I'm not using it.
Read itI tried to make my fact-checking tool prefer reputable sources. Turns out 16 of the most reputable ones refuse to talk to it. Their reporting still comes back, wearing someone else's URL.
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