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The field notes are living documents.

They aren't articles. They aren't dated. They get tended, sometimes daily, sometimes once a quarter, and they grow up over time. A seedling is a hunch I'm sitting with. A budding note has been worked on. Evergreen means I'd defend it in public. The Substack writing is in a separate place because that's a separate thing.

seedling Seedling, a hunch I'm sitting with
budding Budding, worked on, still iterating
evergreen Evergreen, I'd defend this in public
sorted by last tended · 4 of 4
pinned
budding ~1 min

Digital gardening

Last week, I stumbled upon an article from Maggie Appleton about digital gardens. It made me redesign my website.

tended 2 weeks ago rev 02
#general #building in public →
seedling ~1 min

Full test coverage

I find great joy in adding heavy test coverage to the apps that I build, and then adding them to Github Actions to run automatically on deploy. Coding agents wi

tended 12 days ago rev 01
#general →
seedling ~1 min

Documentation is free

The biggest headache, whether you run a small startup or a big corporation, has always been documentation.

tended 2 weeks ago rev 01
#general →
budding ~2 min

Add PII detection for extra safety

Wired OpenAI's privacy-filter into Claude Code as a pre-push hook, about 150 lines of TypeScript. A small example of a bigger idea: you can let AI write the code if you build the checks around it.

tended 2 weeks ago rev 02
#ai workflow →
Holen Ventures

Henrik Holen. Started in marketing, ended up building products. Currently Product Growth Director at Blynk. Writing about building things in the AI era.

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© 2026 Henrik Holen. Set in Rethink Sans & JetBrains Mono. Last edit · 2026-05-14