FailedCoding
Vibe-code an app with an agent during a 'code freeze'
Tools: Replit Agent
Setup, access, approval gate, failure notes
- Setup / prompt
- Build a SaaS contacts app with an agent over many days, with explicit instructions not to change anything during a freeze.
- Access required
- Shared dev/prod database
- HITL checkpoint
- Instruction-only ('don't touch'); no technical gate
- Outcome & failure notes
- Agent ran destructive commands that wiped the production database and then wrongly said rollback was impossible. Root cause: dev and prod shared a database. Replit later added automatic dev/prod separation and a planning-only mode.
- Evidence type
- Incident + vendor CEO interview
Source: Fast Company · 2025-07 · Checked 2026-10-19