I automated my weight logging into Notion, and gave myself a new daily chore

What I wanted I'm building a system where all my daily records live in Notion, so I can point an AI at it and get feedback. Goals, tasks, daily logs, finances — those are all manual entry, and that's fine. But one day it hit me that weight would be nice to sync automatically. The requirements were simple: Every morning, my weight and body fat percentage get appended to a Notion database as one row No manual typing That's it. My scale is a Withings Body Smart. The design I picked first This one: Scale → vendor app → Apple Health → iOS Shortcut → Notion API I chose Apple Health as the hub for these reasons: It doesn't depend on the scale model. As long as the data lands in Health, the same implementation works for any vendor. No server required. A time-based Shortcuts automation handles it end to end — no always-on machine, no cron. Free. No extra subscription. Extensible later. Anything that's already in Health — steps, sleep, heart rate — could be added the same way (if I ever wanted to). Generic, zero cost, extensible. The design looked sound to me. Implementation Here's what the Shortcut looks like: 1. Find Health Samples [Weight] latest, limit 1 2. Get Details of Health Sample [Value] → variable Kg 3. Get Details of Health Sample [Start Date] → variable SampleDate 4. Format Date yyyy-MM-dd → variable Ymd 5. If Ymd == today 6. Text ← build the JSON 7. Get Contents of URL ← POST to the Notion API Step 5 matters. Without it, on a day you don't step on the scale, yesterday's weight gets appended under today's date . Here's the JSON built in step 6: { "parent" : { "database_id" : "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" }, "properties" : { "Date" : { "title" : [ { "text" : { "content" : "@@YMD@@" } } ] }, "Measured" : { "date" : { "start" : "@@YMD@@" } }, "Weight kg" : { "number" : @@KG@@ }, "Body fat %" : { "number" : @@FAT@@ } } } (My real database uses Japanese property names. What matters is that they match your database exactly.) I write this as a plain string in a