Codex Knowledge Base
Codex CLI Troubleshooting Field Guide: Diagnosing and Fixing the Most Common Errors
Every Codex CLI practitioner eventually hits an error that halts a session. The frustration is compounded when the error message is terse and the fix is not.
Codex CLI for Production Log Analysis: Root Cause Pipelines with codex exec, MCP Observability Servers, and Structured Triage Reports
Production incidents rarely announce themselves with a single, readable error. They arrive as thousands of log lines across multiple services, peppered with.
Codex CLI Plugin-Bundled Hooks: Distributing Reusable Quality Gates Through the Marketplace
Codex CLI's hook system has matured steadily since its graduation to stable status in v0.124. Hooks let you intercept agent actions — blocking dangerous.
Codex CLI Memories: Native Session Persistence, Third-Party Memory MCP Servers, and Cross-Session Context Strategies
Every Codex CLI session starts with a blank slate. AGENTS.md and skills provide static context — project conventions, coding standards, tool preferences.
Codex CLI /goal Workflows: Persistent Long-Horizon Task Execution in v0.128
Until v0.128, every Codex CLI interaction followed the same cadence: prompt, execute, wait for the next prompt.
Agent Interoperability Protocols and Codex CLI: MCP, ACP, and A2A in Practice
Three agent interoperability protocols now compete for the plumbing underneath every coding agent workflow: the Model Context Protocol (MCP) for tool.
The AI Coding Productivity Paradox: What Three Major Studies Reveal and How to Configure Codex CLI for Genuine Speed Gains
Ninety-three per cent of developers now use AI coding tools. Adoption is near-universal. Yet three independent research programmes — METR's randomised.
The Agent Logging Gap: Why Codex CLI Agents Under-Log and How to Enforce Observability Standards
A fresh empirical study analysing 4,550 agent-generated pull requests has quantified what many senior engineers already suspected: AI coding agents.
Agent-Generated Code Churns Faster: What 110,000 Pull Requests Reveal and How to Configure Codex CLI for Durable Output
A new MSR 2026 study of 110,000 open-source pull requests across five coding agents finds that agent-generated code is rewritten and deleted significantly.
Codex CLI v0.128: Goal Workflows, Configurable Keymaps, and Built-In Self-Update
Version 0.128.0, released on 30 April 2026, is a feature-dense release that finally delivers three capabilities the community has requested for months.