How Mun checks places
Mun uses AI to draft a plan, then checks every stop against official Korean records before you see it. This page says what is checked, how the checks were tested, what the tests found, and what they can't catch.
What gets checked
| Record | What it tells Mun |
|---|---|
| Korea Tourism Organization open data | Attractions, their opening hours and weekly closing days. A stop is never planned on its closing day. |
| Local government business licence records | Whether a restaurant or café is still licensed, or has been officially closed, and when. |
| Map service place search | Whether the place is still listed by Korea's big map services. |
| Korea Meteorological Administration, AirKorea | Rain and fine-dust forecasts, so outdoor stops can move to a better day. |
Each stop then gets one of three outcomes. Checked open means the records agree it's open. Call ahead means the records disagree or say too little, so Mun shows the phone number. A place that records show as closed is left out of the plan.
How it was tested
In October 2026 Mun was run on two random samples, each of 50 restaurants and cafés that had officially closed in the previous six months and 50 that were licensed and open. They were spread across Korea's provinces. Every place was checked twice: once by name and address only, the way an AI suggestion arrives, and once with map coordinates as well.
What the tests found
- No open place was marked closed. In every run, 0 of the 50 open places were called closed, with or without the licence records.
- Map listings alone miss closures. Without the licence records, Mun would have called 16–30% of the recently closed places open. In the first sample, the big map services still listed 30–38% of them.
- With the licence records, in the first sample 1 of 50 closed places was called open in the name-only check and none with coordinates; the rest were left out or marked "call ahead".
- Some places get "call ahead". In the first sample, 8–13% of all places checked did, mostly ones whose records were thin. Calling ahead costs a minute; a closed door costs an afternoon.
What it can't catch
- A closure that hasn't been reported yet. Licence records can lag weeks behind a shop's last day.
- Temporary closures: holidays, renovations, private events, a day off the owner didn't publish.
- The test's answer key comes from the same licence records Mun checks, so the results with those records are close to perfect by design. The numbers that measure Mun honestly are the ones without them, and the open places wrongly closed.
- Samples were restaurants and cafés near places Mun can recommend, which means busier city areas.
If you find a place closed, report it in the planner. Reports are checked and feed back into the next plans.
Who is behind it
Mun is built by an independent developer in Korea, with code written using Claude, an AI model by Anthropic. More on the About page. Questions: hello@munkorea.com