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[ARTICLE · art-29292] src=mydev.day ↗ pub= topic=developer-tools verified=true sentiment=↑ positive

Show HN: I built a dev diary writes itself

Lucas built mydev.day, an automatic development diary that logs entries per feature as developers build, allowing them to query work history across projects via API or view charts and reports. The tool, initially internal, was released as a product after dogfooding during its own development.

read1 min views1 publishedJun 16, 2026

Hi HN, I'm Lucas. I mostly build XR things, but over the past month or so I've been developing a tool that became necessary for me: I'm usually working on many different things at once, and I needed a way to create reports and check what I worked on last year on a specific day.

mydev.day is an automatic development diary that writes itself as you build. You connect your agent to it once per project (takes a couple of minutes), and from then on it automatically adds an entry per feature. After that you can query it via the API to ask anything about all your work across projects and accounts, or go to the app to print nice looking charts and reports.

It started as an internal tool, but inspired by the indie hackers I follow, I decided to turn it into a little product to see if it could be helpful for other builders and developers out there!

Fun fact: it was really cool to dogfood it on itself as I built it!

Comments URL: [https://news.ycombinator.com/item?id=48552908](https://news.ycombinator.com/item?id=48552908)

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