Codex Knowledge Base
Linux Kernel Development with Codex CLI: From Module Scaffolding to LKML Submission
On 8 May 2026, a patch series appeared on the Linux kernel mailing list introducing prom21-xhci, a hardware monitoring driver for AMD Promontory 21 chipset.
Iterative Repair Loops with Codex CLI: The Review-Repair-Validate Pattern for Self-Correcting Agent Workflows
Single-pass agent runs are fragile. Hand an agent a migration task or a documentation refresh.
Custom CUDA Kernels with Codex CLI: The Hugging Face Agent Skill for GPU Programming
Writing custom CUDA kernels has traditionally been the domain of a small cadre of GPU specialists. The barrier is high: you need to understand warp-level.
Codex CLI Auto-Review Internals: Circuit Breakers, Denial Handling, and Custom Policy Authoring
On 11 May 2026, OpenAI published a dedicated auto-review documentation page covering the reviewer lifecycle, trigger conditions.
Database Schema Migrations with Codex CLI: Atlas Agent Skills, Policy-as-Code, and the Deterministic Safety Layer
AI coding agents are remarkably good at generating application code. Database migrations are a different beast.
Codex CLI as an MCP Server: Building Multi-Agent Workflows with the OpenAI Agents SDK
Codex CLI is primarily a terminal-based coding agent, but it has a second life as an MCP server that other agents can invoke programmatically.
Codex CLI v0.130.0: What's New and Why It Matters
The latest stable release of Codex CLI (v0.130.0, 8 May 2026) brings several features relevant to agentic and enterprise workflows.
The TrustFall Vulnerability: How One Keypress Gives MCP Servers Full System Access — and Why Codex CLI Is Not Affected
On 7 May 2026, Adversa AI published TrustFall, a vulnerability class that turns the Model Context Protocol server mechanism in four major coding agents.
GPT-5.5-Cyber and Codex CLI: Trusted Access, Defensive Workflows, and the Security-Permissive Model Tier
On 7 May 2026, OpenAI announced GPT-5.5-Cyber — a variant of its frontier model with deliberately reduced guardrails for vetted cyber defenders . The model.
The Completions-to-Responses Migration Pack: Automating OpenAI API Migration with Codex CLI
OpenAI's Chat Completions API served the industry well from the GPT-3.5 era onwards, but it was never designed for reasoning models, multi-turn agentic.