ChatGPT 5.5 in Codex App/CLI: The Complete Field Guide for Solo Developers (With `AGENTS.md` Config & DeepSeek Local Routing)

Short summary

Practical guide for orchestrating ChatGPT 5.5's Codex autonomous agent on local machines. Covers essential safety practices (workspace sandboxing, manual command approvals), repository house rules (AGENTS.md and .coderules.json manifests), and cost optimization through local DeepSeek routing. Includes five detailed case studies with annotated screenshots and reusable configuration templates.

• •ChatGPT 5.5 Codex agent automation framework with safety boundaries and manual approval workflows
• •Repository manifests (AGENTS.md, .coderules.json) to prevent over-engineering and enforce house rules
• •Local DeepSeek routing for reduced API token costs while maintaining code reasoning quality

Generated with AI, which can make mistakes.