Home / Agent Harness / OpenAI Codex Agent Harness OpenAI Codex — OpenAI's coding agent Terminal and cloud agent that plans, writes and reviews code across your repo — open source. Official links developers.openai.com/codex openai/codex OpenAI Codex features A AI Trait Artificial Intelligence OpenAI Codex uses OpenAI AI as a Service Advancing artificial intelligence to create transformative applications for individuals and businesses. OpenAI Codex implements M MCP Trait Model Context Protocol
OpenAI AI as a Service Advancing artificial intelligence to create transformative applications for individuals and businesses.