Auto-Trading Live Day 1 — 2 Bugs Fixed, 5 Stocks Bought

Date: 2026-04-20

First day on the live account. Rougher than expected, but the system ran through to the end.

Morning Troubleshooting — 2 Bugs

1. Stale Paper-Trading Token in Cache

The paper-trading token had been left in the cache, causing repeated HTTP 500 errors on live account API calls. Deleted token.json, re-issued a live account token, resolved.

2. MA60 Data Shortage → All Buys Blocked

The KIS live API returned only 30 of the 65 candles requested, making MA60 calculation impossible. Under the live-account conservative principle, all buys were blocked.

Fixed by adding a fallback: when MA60=None, use MA20 instead.

Bug	Fix
Stale paper-trading token in cache	Deleted token.json, re-issued live account token
MA60=None + IS_PAPER=False blocked all buys	When MA60=None, fall back to MA20 regardless of paper/live mode (per-stock MA60 condition still applies)

I described the symptoms to AI and we found the root cause together. AI wrote the fix. My role was to review and apply it.

First Live Buys (10:33)

Stock	Qty	Price
Kakao (035720)	20 shares	₩49,600
Kia (000270)	6 shares	₩159,600
KB Financial (105560)	6 shares	₩162,700
Shinhan Group (055550)	9 shares	₩100,400
NAVER (035420)	4 shares	₩216,000

• Total deployed: ₩4,690,300
• Remaining cash: ₩305,970

End-of-Day Results

• Total portfolio value: ₩4,945,970
• Realized P&L: ₩0 (no sells)
• Unrealized P&L: –₩54,030 (–1.08%)
• All 5 positions held (stop-loss threshold –3% not reached)

The system evaluated conditions and sold nothing. That was the correct call.

Infrastructure Check

Received daily summary Telegram message at 15:30. Website data export also completed normally.

Infrastructure changes (configured the day before):

• Windows Task Scheduler registered (daily auto-start at 08:45)
• run_live.bat created (with log file redirect)

To Check Tomorrow

• Windows Task Scheduler auto-start (2026-04-21 08:45)
• MA60 data return count (count=130 test)