Codex Knowledge Base
Codex Exec as a Unix Citizen: Stdin Piping, Structured Output, and Shell Composition
The Unix philosophy — small tools, text streams, composable pipelines — has shaped how developers think about automation for over fifty years.
Codex CLI Observability with OpenTelemetry: Tracing Agent Sessions, Tool Calls, and API Requests
As coding agents move from individual experimentation to team-wide adoption, the question shifts from does it work? to how well is it working.
The April 2026 Model Deprecation Wave: Migrating Your Codex CLI Configuration
On 14 April 2026, OpenAI completed the largest model retirement in Codex CLI's history. Six models — gpt-5.2-codex, gpt-5.1-codex-mini, gpt-5.1-codex-max.
Goal Mode: Persistent Objectives with Token Budgets and Autonomous Continuation
Codex CLI has steadily expanded its autonomy surface — from --full-auto mode through subagent workflows and codex exec for headless batch runs. But every.
Execution Policy Rules in Codex CLI: Starlark-Based Command Governance for Teams
Every senior developer running Codex CLI has felt the friction: approve git status, then approve git diff, then approve git log — each individually, each.
Mastering Context Compaction in Codex CLI: Tuning Auto-Compact for Long-Running Sessions
Context compaction is the mechanism that lets Codex CLI sessions run for hours — even up to seven hours on complex tasks — without hitting context window.
Codex as a GitHub Coding Agent: Agent HQ, Model Selection, and Cloud-Based Code Review
Most coverage of Codex focuses on the CLI — the open-source terminal agent you install with npm install -g @openai/codex.
The Axios Supply Chain Attack: How It Hit Codex CLI's Signing Pipeline and What Teams Should Learn
On 31 March 2026, a North Korean threat actor compromised the Axios npm package — the most popular HTTP client in the JavaScript ecosystem.
Agent Memory Governance: GDPR, Data Retention, and Enterprise Memory Policies
Codex CLI's persistent memory system — the two-phase pipeline that extracts, consolidates, and reinjects session knowledge across invocations — is arguably.
What Microservices Taught Us About Building AI Coding Agents
I attended a microservices talk yesterday at Norfolk Developers. The speaker covered the fundamentals — monoliths versus microservices, RESTful API design.