An agent’s hardcoded fallback prompt rotted for eight months and misled customers
Illustrious-Second-7 · reddit · 2026-07-24
A developer recounts a real outage where an agent fell back to an outdated hardcoded prompt and started giving customers obsolete product information. The broader lesson: prompts and instructions that only run on error paths silently rot, evade normal evals, and should be audited like production code.
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