Codex Knowledge Base
Spring 2026 AI Coding Agent Vulnerabilities: CVE-2026-26268, Comment-and-Control, and Codex CLI's Defence Posture
Two high-severity vulnerabilities disclosed in the final week of April 2026 demonstrate that AI coding agents remain soft targets.
Specification Drift and SLUMP: Why Codex CLI Loses Faithfulness in Long-Horizon Sessions and How to Fight Back
Every developer who has used a coding agent for a multi-hour session has felt it: somewhere around the thirtieth turn, the agent starts building something.
The Over-Mocking Problem: What 1.2 Million Commits Reveal About Agent-Generated Tests and How to Configure Codex CLI for Realistic Test Output
A new empirical study accepted at MSR 2026 analysed 1.2 million commits across 2,168 repositories and found that coding agents generate mocks in 36% of their.
Do Agent-Written Tests Actually Help? What Six LLMs on SWE-bench Reveal and How to Rethink Your Codex CLI Testing Strategy
The instinct to make coding agents write tests is strong — and understandable. Test-driven development has been a pillar of professional software.
Codex CLI Remote Development: App Server Architecture, SSH Connections, and Multi-Environment Workflows
Running your coding agent on a beefy remote machine whilst driving it from a laptop is no longer a workaround — it is an officially supported workflow.
Codex CLI Output Control: Tuning Verbosity, Reasoning Summaries, and Token Budgets for Every Workflow
Codex CLI ships with sensible defaults, but those defaults assume a single use case: interactive development with moderate explanation. In practice, senior.
Codex CLI for Everyday Git Workflows: Commit Messages, PR Descriptions, and Branch Automation
Most Codex CLI coverage focuses on the spectacular — multi-file refactors, overnight goal workflows, multi-agent orchestration. But the tool's.
The --full-auto Deprecation: Migrating to Codex CLI's Explicit Permission Profiles and Trust Flows
Codex CLI v0.128 quietly retired one of the tool's most convenient — and most dangerous — flags. The --full-auto option, which bypassed all approval prompts.
Codex CLI Daily Driver Setup for May 2026: An Opinionated Configuration Guide
Codex CLI v0.128 is the most configurable release yet. Between named profiles, persistent memories, configurable keymaps, goal workflows.
Codex CLI on Amazon Bedrock: Enterprise Configuration, SigV4 Authentication, and AWS-Native Workflows
On 28 April 2026, AWS and OpenAI announced that Codex — the OpenAI coding agent — is available on Amazon Bedrock in limited preview . For enterprise teams.