ChatGPT Developer Mode Fixes MCP and Custom Instructions Conflict

ChatGPT's Developer Mode has been updated to no longer disable memory and custom instructions. Users can now seamlessly add and use custom MCPs without sacrificing their personalized settings.

2026-07-12 ~ 2026-07-12 · 2 related posts

• ChatGPT Developer Mode Supports Seamless Custom MCP Addition — BLCNYY · 2026-07-12
• ChatGPT Developer Mode Fix: Supports MCP with Custom Instructions Simultaneously — BLCNYY · 2026-07-12