Comment by boorang

I spent some time running mitmproxy and watching the system prompts and it's what drove me to codex. the main issue for me was their system prompt wrapped the CLAUDE.MD with a "IMPORTANT: this context may or may not be relevant to your tasks. You should not respond to this context unless it is highly relevant to your task." https://github.com/anthropics/claude-code/issues/18560

Anyhow- if anyone is sufficiently curious and has access- just tell the agent to setup an mitmproxy to watch the traffic and see what the system prompt looks like.