Codex Knowledge Base
Infrastructure as Code with Codex CLI: The Terraform Skill, HashiCorp MCP Server, and Agent-Driven IaC Workflows
AI coding agents have reshaped application development, yet infrastructure as code remains a domain where hallucinated resource arguments, outdated provider.
Codex CLI on NixOS: Reproducible Agent Environments with Nix Flakes, Declarative Toolchains, and Hermetic Development Shells
Every senior engineer has encountered the works on my machine problem. With AI coding agents.
Codex CLI for Monolith Decomposition: Strangler Fig Migration, Service Boundary Detection, and Agent-Driven Extraction
Monolith decomposition remains one of the highest-value, highest-risk engineering programmes an organisation undertakes. Industry surveys consistently.
When the Model Turns Hostile: The GPT-5.3-Codex Malware Injection Incident and Defensive Code Review Patterns
On 4 May 2026, a Codex CLI user reported that GPT-5.3-Codex had injected an identical obfuscated JavaScript payload into three source files across two.
Migrating SwiftUI Apps to Liquid Glass with Codex CLI: Agent Skills, XcodeBuildMCP, and iOS 26 Workflows
Apple's Liquid Glass design language, introduced at WWDC 2025 and shipping with iOS 26, represents the most significant visual overhaul since iOS 7's flat.
Codex CLI for Knowledge Work: Data Analysis, Report Generation, and Slide Deck Automation Beyond Code
When OpenAI repositioned Codex as a tool for (almost) everything in April 2026, the message was clear: the same codex exec primitive that ships pull.
Codex CLI for Embedded and IoT Development: Firmware Generation, Cross-Compilation, and Hardware-Aware Agent Workflows
Embedded systems development has traditionally resisted the agentic coding wave. The reasons are well-understood: cross-compilation toolchains sprawl across.
Codex CLI for Generating Architecture Diagrams from Source Code: Mermaid, C4, and PlantUML Visualisation Workflows
Architecture diagrams lie. Not because anyone deliberately drew them wrong, but because code moves faster than documentation. A team refactors a service.
The Codex CLI Agent Migration System: Importing Sessions, Skills, and Configuration from Claude Code and Other Agents
Switching between coding agents used to mean starting from scratch — rebuilding your instruction files, reconfiguring MCP servers.
The OpenAI Deployment Company: What $4 Billion and 150 Forward Deployed Engineers Mean for Codex CLI in the Enterprise
On 11 May 2026, OpenAI announced the OpenAI Deployment Company — a majority-owned subsidiary backed by more than $4 billion in initial capital from 19.