Developer uses idle AI subscription quota to run Computer Use as automated UAT for AI-built apps
leebase65 · reddit · 2026-11-03
A Reddit developer shares how he burns leftover OpenAI/Anthropic quota before weekly resets on real projects. Key highlight: using Codex with Computer Use on a MacBook to run user-acceptance testing of his Obsidian-like markdown editor inside a Linux VM (bypassing the lack of Computer Use on Linux), then feeding the AI's fix list to Codex on Linux. He also has Codex play his chess app like a human to find bugs and add 1200/1400-level opponents, previously ran an autonomous "AI employee" generating Unix-style C utilities (now pivoted to Rust tools for his Snowflake/AI consulting practice), and had a bespoke book on AI Process Reengineering written for his own learning. His thesis: Computer Use closes the long-standing gap of quality UAT in AI-assisted coding — letting the AI catch easy errors before a human ever tests.
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