# Field notes
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The Company Where a Photo of a Receipt Becomes a Ledger Entry
I studied spreadsheet automation for months. The answer was to stop opening the spreadsheet.
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What It Actually Costs to Run My Companies on AI
Two Max accounts, weekly rate limits and an API bill — the honest monthly number, and why the usual comparison is wrong.
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Forty Bots Run My Day Now
My day started in the inbox and ended in the inbox. I was doing the system's job.
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I Gave the AI an Employee Badge
Every report was already history the moment I exported it. Then I let the AI read the books directly.
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I Can't Write a Line of Code. I Built Our ERP Anyway.
Everyone is chasing full autonomy. I run semi-automatic on purpose — and there is an order to this that most people skip.
# About
I am a Singapore-based operator and the founder of BRIGHTEN PTE. LTD. Through BRIGHTEN Group I build and run companies across trading, AI security, and SaaS — five of them at present.
My work is mostly about turning operations into systems: making the accounting, the sales pipeline, and the daily reporting run themselves.
What you will find here are practical field notes from that work — what was built, what it cost, what broke. Not tutorials.